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2006-05-22 05:11:08> <jafo> Hello nfsbot.
2006-05-22 05:12:00> <jafo> Ok, does anyone want the IRC logs on the web live as they are happening, or can I just wait until we're done and publish then?
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2006-05-22 05:14:20> <rjones> whatever :)
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2006-05-22 05:15:44> <jafo> dalke: Hey there.
2006-05-22 05:19:42> <effbot> anyone here?
2006-05-22 05:19:59> <effbot> have everyone found anything to do, or ...
2006-05-22 05:23:09> <jafo> I'm just building my task list now.
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2006-05-22 05:41:59> <jafo> Is anyone working on trying to convert to 64-bit ints on 32-bit platforms and see how it impacts pybench?
2006-05-22 05:45:35> <jafo> holdenweb_: I still think we need to have a group discussion on the slow-down from 2.4 to 2.5 that you saw.
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2006-05-22 06:21:56> <effbot> I've posted my slowdown results here:
2006-05-22 06:21:57> <effbot> http://wiki.python.org/moin/NeedForSpeed/Goals/Slowdown#preview
2006-05-22 06:22:26> <effbot> The big ones seem to be import and try/except.
2006-05-22 06:22:28> <jafo> effbot: I'm just running tests now.
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2006-05-22 06:27:08> <holdenweb_> anyone using svn tortoise can show me how to set up authentication?
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2006-05-22 08:01:14> <effbot> I have gobby running on 192.168.0.103 port 6522 if anyone wants to try.
2006-05-22 08:11:05> <holdenweb> effbot: gobby 0.3 or 0.4?
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2006-05-22 08:20:08> <effbot> gobby 0.4
2006-05-22 08:36:52> <holdenweb> so i discovered when I ran 0.3 :_)
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2006-05-22 08:51:15> <holdenweb> effbot: how come I get an "overhead" column on my pybench output where you have a "diff *)" column?
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2006-05-22 09:24:11> <jafo> I'm going to take a look at switching ints to 64 bits on 32-bit platforms.
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2006-05-22 09:47:04> <b-_-d> anyone use nfs? how do i get locking?
2006-05-22 09:54:15> <jafo> b-_-d: See the channel topic.
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2006-05-22 10:06:51> <jafo> How does Python decide to do the up-convert from int to long? I've converted all the types, I think, to "long long", but 1<<32 is going to L.
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2006-05-22 10:13:09> <ymmit> jafo: for 1<<32, see intobject.c's int_lshift.
2006-05-22 10:13:20> <jafo> Thanks.
2006-05-22 10:13:57> <ymmit> You're probably see that the platform LONG_BIT is #define'd as 32, so left shift figures it _needs_ a Python long.
2006-05-22 10:14:35> <b-_-d> channel name is deciving
2006-05-22 10:14:59> <b-_-d> #Python would work
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2006-05-22 10:15:11> <jafo> b-_-d: No, it wouldn't.
2006-05-22 10:30:48> <jbenedik> doctorwells: you at keys?
2006-05-22 10:31:57> <doctorwells> yup
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2006-05-22 10:41:05> <jbenedik> i'm working on psyco dicts right now
2006-05-22 10:44:14> <doctorwells> cool, what part? virtualized keys(), values() and items() ?
2006-05-22 10:44:37> <jbenedik> we'll see how much - ideally yes
2006-05-22 10:44:40> <jbenedik> faster iteration
2006-05-22 10:44:44> <jbenedik> virtualized access
2006-05-22 10:46:11> <jafo> Ok, this is extremely weird. I converted the int stuff to long long on 32-bit platforms, and I'm getting:
2006-05-22 10:46:13> <jafo> Average round time: 4081.70 ms -100.00%
2006-05-22 10:46:26> <jafo> The -100.00% is consistent.
2006-05-22 10:47:02> <doctorwells> sounds a lot faster
2006-05-22 10:48:08> <jafo> But the original is: Average round time: 4037.00 ms
2006-05-22 10:48:25> <jafo> Oh, wait, obviously there's a problem in my conversion to long long...
2006-05-22 10:48:34> <rxe> doctorwells: joining the sprint remotely? :-)
2006-05-22 10:48:44> <doctorwells> sumthin' like that
2006-05-22 10:50:19> <jafo> So, it looks like on pybench the difference is 1.11% slow-down by going to long long.
2006-05-22 10:51:03> <jafo> So, do we want to suck it up, or give it a pass? Anyone?
2006-05-22 10:51:26> <jbenedik> What kind of speedup do you get when you overflow? any?
2006-05-22 10:51:40> <doctorwells> does pybench do anything with ints in the 32 - 64 bit range?
2006-05-22 10:51:53> <jafo> Don't know and don't know.
2006-05-22 10:55:17> <jafo> Looks like 1<<35 is around 34% faster.
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2006-05-22 11:49:22> <kristjan> CS:EIP Symbol + Offset Thread ID Samples Total % CPU0 32 bit 64 bit
2006-05-22 11:49:22> <kristjan> 0x1e00f070 PyEval_EvalFrameEx 12839 49.94 12839 12839 0
2006-05-22 11:49:22> <kristjan> 0x1e01aa80 lookdict_string 738 2.87 738 738 0
2006-05-22 11:49:22> <kristjan> 0x1e00ea20 call_function 526 2.05 526 526 0
2006-05-22 11:49:22> <kristjan> 0x1e033560 rangeiter_next 338 1.31 338 338 0
2006-05-22 11:49:24> <kristjan> 0x1e0135d0 tupledealloc 333 1.3 333 333 0
2006-05-22 11:49:26> <kristjan> 0x1e0120d0 PyObject_GenericGetAttr 269 1.05 269 269 0
2006-05-22 11:49:30> <kristjan> 0x1e015320 list_dealloc 259 1.01 259 259 0
2006-05-22 11:49:40> <kristjan> profile data, functions over one %
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2006-05-22 12:09:53> <runarp> is anyone else looking at the longpatch?
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2006-05-22 12:31:12> <jafo> Room 332 now has wireless in it, essid=tummy, feel free to use it if you can get it.
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2006-05-22 12:49:10> <Klipsch> is there a way to mount and ignore all hidden files like .hidden
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2006-05-22 13:13:31> <gbrandl> Klipsch: this is not a Network File System channel
2006-05-22 13:17:43> <Klipsch> oh
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2006-05-22 17:00:52> <jafo> Hey folks. Anyone up for hacking in the lobby for a bit more?
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2006-05-22 17:16:34> <efm> SteveH: don't forget the Big Visible Charts for measuring progress
2006-05-22 17:29:10> <jafo> holdenweb is absent until around 3am your time.
2006-05-22 17:29:19> <jafo> Sounds like people would like to say hi though.
2006-05-22 17:29:34> <jafo> And, of course, nfsbot is logging this.
2006-05-22 17:30:17> <jafo> So far, 'we've had fewer people asking about network filsystems than I expected.
2006-05-22 17:35:42> <efm> hi All sprinters from warm and sunny Colorado!
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2006-05-23 02:59:12> <TomasOsmena> hi all anybody here know what is the tool to print the ip of connected nfs client from our nfs server?
2006-05-23 02:59:24> <jafo> TomasOsmena: See the topic.
2006-05-23 03:00:20> <TomasOsmena> sorry
2006-05-23 03:00:24> <jafo> No problem.
2006-05-23 03:00:56> <TomasOsmena> any help which channel my question belongs to?
2006-05-23 03:02:26> <jafo> Don't know, sorry.
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2006-05-23 03:10:12> <jack_diederich> my jotlive username is "jackdied"
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2006-05-23 03:23:32> <etrepum> jafo: jotlive user name is etrepum
2006-05-23 03:23:48> <jafo> done
2006-05-23 03:25:31> <grunar> my jotlive is runar
2006-05-23 03:26:08> <jafo> Done.
2006-05-23 03:29:38> <gbrandl> jafo: my name's gbrandl
2006-05-23 03:30:02> <jafo> Done.
2006-05-23 03:32:51> <ccpRichard2> jafo: mine is richardtew
2006-05-23 03:33:10> <jafo> Done.
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2006-05-23 03:45:19> <etrepum> the nnorwitz "speed up function calls" patch is http://python.org/sf/1479611
2006-05-23 03:52:31> <blais> jafo: add me "blais"
2006-05-23 03:52:34> <blais> to that jot thing
2006-05-23 03:52:36> <blais> ja
2006-05-23 03:52:48> <jbenedik> jafo: invite mrjbq7
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2006-05-23 04:18:50> <etrepum> What's the PyMember type for Py_ssize_t? Do we need to add one?
2006-05-23 04:19:04> <etrepum> T_LONGLONG?
2006-05-23 04:20:59> <gbrandl> etrepum: no, there isn't one yet. I actually wrote to python-dev about it, and Martin (vL) said he'd like to see a use case ;)
2006-05-23 04:22:27> <etrepum> well my use case is that I have fields that count things, and it seems like it would make sense to use the appropriate Python type for counting things
2006-05-23 04:22:54> <etrepum> I guess I'll just use int
2006-05-23 04:22:56> <gbrandl> I'd say just add it in your branch
2006-05-23 04:23:13> <etrepum> I'm developing this as an extension module, not a branch of Python
2006-05-23 04:23:37> <etrepum> I don't need to recompile Python to add an API to an extension :)
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2006-05-23 04:31:04> <gbrandl> etrepum: FWIW, the thread is at http://mail.python.org/pipermail/python-dev/2006-May/064996.html
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2006-05-23 04:39:46> * jafo stabs jotlive in the face over the Internet.
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2006-05-23 04:46:35> <etrepum> http://docs.python.org/api/api.html
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2006-05-23 04:58:49> <jafo> runarp: So, on the string offset idea. Adding string offsets to a function seems like the camels nose under the tent, if you know the expression. It seems like there are a lot of places it would be nice to have that. I wonder if it might be possible to do something like have a string sub-class that is a StringOffset(s, start, length) sort of thing, that would be light a light weight wrapper on top of string, which some functions would be specialized to
2006-05-23 04:58:49> <jafo> handle.
2006-05-23 04:59:52> <jafo> In the case of functions that don't understand it, the class could look like a regular string and provide a slice. For functions that do understand it, they could bypass the slicing.
2006-05-23 04:59:56> <jafo> Thoughts?
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2006-05-23 05:32:16> <ccpRichard2> jafo: Can you add KristjanJonsson please :)
2006-05-23 05:32:47> <jafo> Done.
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2006-05-23 05:46:38> <jafo> runarp: It sounds like the bute buffer stuff we're talking about out here would prevent the issues I was trying to solve above. Martin has more information.
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2006-05-23 09:45:36> <kristjan> on windows, you want GetProcessTimes() or GetThreadTimes()
2006-05-23 09:46:07> <kristjan> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/getprocesstimes.asp
2006-05-23 09:48:29> *** jbenedik has quit IRC
2006-05-23 09:49:56> <kristjan> works on NT
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2006-05-23 10:27:59> <blais> some pics here:
2006-05-23 10:28:00> <blais> http://furius.ca/tmp/nfs1/html/dirindex.html
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2006-05-23 10:47:59> <etrepum> http://python.org/sf/1493701 - struct module performance enhancements
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2006-05-23 10:52:54> <bcannon> Morning folks.
2006-05-23 10:53:40> <bcannon> Actually, I just realized it's 3:00 over there so I bet no one is even logged in. =)
2006-05-23 10:54:44> <bcannon> OK, when you guys start to sprint again, shoot me an email and I will try to pop back on to answer questions about possibilities as to why the addition of new-style classes for exceptions could have added a performance hit.
2006-05-23 10:55:14> <bcannon> This is Brett in case people don't recognize the IRC nick. =)
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2006-05-23 11:02:12> <blais> hey brett, wazzup
2006-05-23 11:07:22> <kristjan> sprinting is well and truly underway
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2006-05-23 11:07:51> <jafo> Hey there.
2006-05-23 11:08:11> <bcannon> I just realized my math was off because I subtracted instead of added 7 hours. =)
2006-05-23 11:08:15> <jafo> Still kind of scratching our heads as to where the performance change is.
2006-05-23 11:08:32> <jafo> guin:msglog$ TZ=GMT date
2006-05-23 11:08:32> <jafo> Tue May 23 17:08:27 GMT 2006
2006-05-23 11:08:50> <jafo> I don't do math when I check the time here.
2006-05-23 11:08:54> <bcannon> So a possibility is the PyException_* macros that are used to verify that an object is acceptable as a macro.
2006-05-23 11:09:40> <bcannon> Those are at several key points in the code path and they do several checks so there are more 'if' checks and have more memory accesses.
2006-05-23 11:09:58> <bcannon> I don't think object creation is done in a stupid way so I don't think it is from object creation, but it is a possibility.
2006-05-23 11:10:39> <bcannon> Otherwise I can't think of any specific points where the differences were huge.
2006-05-23 11:10:41> <jafo> Ok, a few things.
2006-05-23 11:10:56> <bcannon> Unless checking for string exceptions for possible warnings is just ridiculously costly.
2006-05-23 11:11:02> <jafo> We seem to still be seeing performance issues, even if we've already created the object.
2006-05-23 11:11:10> <bcannon> OK.
2006-05-23 11:11:24> <jafo> We're looking at the macros now, and it seems like they would be getting called for both new and old style objects.
2006-05-23 11:11:47> <bcannon> So this is a performance hit in 2.5 for both new-style and classi?
2006-05-23 11:11:54> <bcannon> I thought this was a 2.4 -> 2.5 issue.
2006-05-23 11:12:10> <jafo> Kind of.
2006-05-23 11:12:28> <jafo> In 2.5, old style classes if thrown as an exception show no performance drop from 2.4.3.
2006-05-23 11:12:34> <bcannon> OK
2006-05-23 11:12:43> <jafo> New style classes show like a 100% drop.
2006-05-23 11:13:46> <bcannon> Unfortunately I am at work and just discovered svn is not installed so I can't check the code out and look.
2006-05-23 11:14:03> <jafo> Ok.
2006-05-23 11:14:15> <jafo> There is, of course: http://svn.python.org/view?rev=42711&view=rev
2006-05-23 11:14:31> <bcannon> Going from memory, the differences in terms of code path is that obviously that new-style exceptions are new-style classes (but you mostly showed that is not needed).
2006-05-23 11:14:33> <jafo> We can dig into the macros and see if it seems that that is it.
2006-05-23 11:15:12> <bcannon> I remember there is a place where divergence happens in the code path based on type; give me a minute to try to find it.
2006-05-23 11:15:30> <jafo> Based on old or new style classes you mean?
2006-05-23 11:15:33> <jafo> We haven't seen that.
2006-05-23 11:16:09> <bcannon> Yeah, I think there is one spot; but my memory could be foggy since I had spent the previous day at the sprints fixing a bitch of a bug to track down and so my brain was frazzled.
2006-05-23 11:16:24> <jafo> Ah.
2006-05-23 11:20:13> <jafo> Thanks for popping in. I'm trying dikeing out some of the macros for our limited tests and seeing if that has an impact.
2006-05-23 11:20:34> <bcannon> OK, what I was remembering is that block change in errors.c
2006-05-23 11:20:52> <jafo> haven't looked in errors.c
2006-05-23 11:24:09> <bcannon> When benchmarking, is it purely in raising an exception, or are you also viewing the exception in any way to trigger the __repr__ or __unicode__ methods?
2006-05-23 11:24:28> <jafo> Purely raising the exception.
2006-05-23 11:24:30> <bcannon> OK
2006-05-23 11:24:37> <jafo> try: raise ValueError
2006-05-23 11:24:40> <jafo> except: pass
2006-05-23 11:25:26> <bcannon> And no difference if you ``raise ValueError()`` or catching the specific exception?
2006-05-23 11:25:53> <jafo> Have only tried "raise ValueError, 5".
2006-05-23 11:26:05> <jafo> I can try the except ValueError in a few.
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2006-05-23 11:26:39> <bcannon> Actually, try it so that the object creation is outside of the timing code and raise the instance.
2006-05-23 11:26:43> <jafo> Ok, if I change PyExceptionClass_Check to "1", pybench doesn't show any impact.
2006-05-23 11:26:55> <bcannon> OK
2006-05-23 11:28:38> <jafo> Trying outside of the timing code.
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2006-05-23 11:30:09> <jafo> It's looking like by moving it out of the loop it's faster than 2.4.3 by an amazing amount.
2006-05-23 11:30:18> <jafo> 50%.
2006-05-23 11:30:19> <bcannon> =)
2006-05-23 11:30:29> <jafo> I guess it's not that amazing, but yeah, faster.
2006-05-23 11:30:31> <bcannon> So it is new-style instantiation.
2006-05-23 11:30:46> <jafo> Wait a moment.
2006-05-23 11:30:46> <bcannon> Or at least a good chunk of it.
2006-05-23 11:30:49> <bcannon> OK
2006-05-23 11:31:01> <jafo> I need to re-run the baseline.
2006-05-23 11:31:07> <bcannon> ok
2006-05-23 11:32:55> <jafo> Ok. With the exception outside the timing loop, it's the same speed on 2.4.3 and 2.5a2.
2006-05-23 11:33:02> <jafo> So, yeah, instance creation.
2006-05-23 11:33:05> <bcannon> Figures.
2006-05-23 11:33:14> <jafo> I guess there's nothing that can be done there.
2006-05-23 11:33:20> <bcannon> =)
2006-05-23 11:33:31> <bcannon> Can always work your voodoo on instance creation. =)
2006-05-23 11:34:01> <jafo> What makes you think I have voodoo?
2006-05-23 11:34:13> <bcannon> Or perhaps there is a better way to define the class than how it is currently.
2006-05-23 11:34:41> <jafo> I don't honestly know.
2006-05-23 11:35:15> <bcannon> Could possibly be better to define the class all in C with a proper struct instead of using a PyMethodDef for the magic methods.
2006-05-23 11:35:26> <bcannon> That should help take out some overhead.
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2006-05-23 11:35:54> <bcannon> Assuming that doesn't break code somewhere for some odd reason.
2006-05-23 11:36:24> <bcannon> But basically that is the best I can think of. Might not be bad in terms of cleanup of the code anyway.
2006-05-23 11:36:38> <bcannon> Planning to do that at some point.
2006-05-23 11:36:53> <bcannon> But it might be a few years. =)
2006-05-23 11:37:08> <jafo> Are you talking about for the BaseException class?
2006-05-23 11:37:13> <bcannon> Yep.
2006-05-23 11:37:32> <jafo> Ok, I can try that.
2006-05-23 11:37:38> <bcannon> OK, cool.
2006-05-23 11:37:44> <jafo> Thanks for the help.
2006-05-23 11:37:51> <bcannon> No problem. Glad I could help.
2006-05-23 11:38:06> <bcannon> Everything going well over there?
2006-05-23 11:44:27> <blais> (c-add-style
2006-05-23 11:44:27> <blais> "python-new"
2006-05-23 11:44:27> <blais> '((indent-tabs-mode . nil)
2006-05-23 11:44:27> <blais> (fill-column . 78)
2006-05-23 11:44:27> <blais> (c-basic-offset . 4)
2006-05-23 11:44:28> <blais> (c-offsets-alist . ((substatement-open . 0)
2006-05-23 11:44:30> <blais> (inextern-lang . 0)
2006-05-23 11:44:32> <blais> (arglist-intro . +)
2006-05-23 11:44:34> <blais> (knr-argdecl-intro . +)))
2006-05-23 11:44:36> <blais> (c-hanging-braces-alist . ((brace-list-open)
2006-05-23 11:44:38> <blais> (brace-list-intro)
2006-05-23 11:44:42> <blais> (brace-list-close)
2006-05-23 11:44:44> <blais> (brace-entry-open)
2006-05-23 11:44:46> <blais> (substatement-open after)
2006-05-23 11:44:48> <blais> (block-close . c-snug-do-while)))
2006-05-23 11:44:50> <blais> (c-block-comment-prefix . ""))
2006-05-23 11:44:52> <blais> )
2006-05-23 11:44:54> <blais> (add-to-list 'c-default-style '(c-mode . "python-new"))
2006-05-23 11:45:29> <bcannon> And then Martin scares me away with Emacs Lisp. =)
2006-05-23 11:45:43> <bcannon> Well all, continue the great work.
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2006-05-23 13:03:33> <stakkars> hola
2006-05-23 13:03:41> <jafo> j0
2006-05-23 13:04:33> <jafo> WTF are you?
2006-05-23 13:05:23> <stakkars> I'm downstairs, locked in a somewhat hairy problem.
2006-05-23 13:05:32> <stakkars> this way should be faster to get out
2006-05-23 13:05:56> <jafo> Mmm. Hair.
2006-05-23 13:05:58> <stakkars> amazing that I have IRC, here
2006-05-23 13:07:00> <stakkars> WTF == Who or where? "who" == 'chris'
2006-05-23 13:07:11> <jafo> What The F**k
2006-05-23 13:07:43> <stakkars> Mr. Stackless, of course
2006-05-23 13:07:59> <jafo> Sorry, I meant Where.
2006-05-23 13:08:02> <jafo> Got distracted.
2006-05-23 13:08:09> <stakkars> oki :-)
2006-05-23 13:08:23> <jafo> [13:02:58] --> stakkars (n=tismer@213.213.135.203) has joined #nfs
2006-05-23 13:08:26> <jafo> I got the whom.
2006-05-23 13:08:55> <stakkars> if somebody is asking, I will show up, of course
2006-05-23 13:09:21> <jafo> I was just wondering because I didn't think I saw you up here, and you were online...
2006-05-23 13:09:44> <stakkars> amazing, that tiny HUB
2006-05-23 13:11:06> <jafo> You are associated with the NFS APs, not the lobby one?
2006-05-23 13:12:26> <stakkars> no idea. I'm connected to needforspeed
2006-05-23 13:13:14> * stakkars going back into deep thought mode
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2006-05-23 20:28:15> <Syron> I know this isn't the network filesystems channel but do you know what channel that is?
2006-05-23 20:31:59> <efm> Syron: Finally, there is a public IRC channel #linux-nfs on the server irc.oftc.net, which may be used for discussing Linux NFS development, testing, and related topics.
2006-05-23 20:35:54> <Syron> thanks, the channel list was a bit long. :)
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2006-05-24 02:20:17> <jafo> j0 par-tay ppl.
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2006-05-24 04:39:39> <mwh> ok, so my recent mail to python-dev is wrong :)
2006-05-24 04:40:07> <jafo> mwh: If you were using Outlook you could send a retraction. :-)
2006-05-24 04:40:21> <jafo> Like the hotel did to us when we were at PyCon...
2006-05-24 04:40:47> *** etrepum has joined #nfs
2006-05-24 04:41:06> <jafo> <Reply All> "Wait till those suckers see what we're going to charge them next year." <Send> "Oh, wait..."
2006-05-24 04:41:25> <mwh> oops
2006-05-24 04:42:09> <stakkars> mike, do you have the rights to create a codespead account for John?
2006-05-24 04:42:27> *** rxe has joined #nfs
2006-05-24 04:42:29> <mwh> yes
2006-05-24 04:42:32> *** jack_diederich has joined #nfs
2006-05-24 04:42:41> <stakkars> we would like to work on a psyco branch and need to share for debugging
2006-05-24 04:42:50> <stakkars> that would be great!
2006-05-24 04:42:54> <mwh> who is john?
2006-05-24 04:43:09> <stakkars> John Benediktsson from EWT LLC
2006-05-24 04:43:19> <mwh> ah, jbenedik ?
2006-05-24 04:43:23> <stakkars> jup
2006-05-24 04:43:40> <stakkars> alternatively I could use my account, but well
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2006-05-24 04:54:50> <stakkars> thanks, Mike!
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2006-05-24 04:56:17> <blais> hey
2006-05-24 04:56:18> <blais> more pics
2006-05-24 04:56:20> <blais> http://furius.ca/tmp/nfs2/html/dirindex.html
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2006-05-24 04:57:23> <jafo> I put up Steve's picture of unkatimmy from yesterday at http://www.tummy.com/journals/
2006-05-24 04:57:36> <jafo> Of course, more photos at jafo.ca
2006-05-24 05:02:58> <mwh> jafo: i'm not seeing anything like the slowdown you report with new-style exceptions
2006-05-24 05:03:25> <mwh> i'm seeing about 20%
2006-05-24 05:04:01> <mwh> and the time in all cases seems to be dominated by building the exception
2006-05-24 05:04:51> <jafo> Hrmm.
2006-05-24 05:04:55> <jafo> What platform?
2006-05-24 05:04:59> <mwh> os x
2006-05-24 05:05:06> <jafo> Sorry, we were also trying to figure out lunch plans.
2006-05-24 05:05:12> <mwh> fair enough
2006-05-24 05:05:41> <jafo> Are you using the pybench from trunk?
2006-05-24 05:05:49> <mwh> i'm using timeit
2006-05-24 05:06:01> <jafo> Hmm. Can you get me your test?
2006-05-24 05:06:24> <mwh> http://pastebin.de/6937
2006-05-24 05:06:37> <mwh> then just
2006-05-24 05:06:39> <mwh> ./python.exe -m timeit -s 'import t' 't.main()'
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2006-05-24 05:08:18> <jafo> zsh: no such file or directory: ./python.exe
2006-05-24 05:08:44> <mwh> it's freshly built from svn head
2006-05-24 05:08:58> <mwh> comparing vs python2.4
2006-05-24 05:09:09> <jafo> Nah, just giving you shit.
2006-05-24 05:09:35> <mwh> i generally assume a brain on behalf of my readers :)
2006-05-24 05:10:05> <jafo> So you expect them not to be running on a platform that has .exe extensions in other words? ;-)
2006-05-24 05:10:26> <mwh> oh don't even start
2006-05-24 05:11:16> <jafo> :-)
2006-05-24 05:18:45> <jafo> guin:Python-2.4.3$ python -m timeit -s 'import t' 't.main()'
2006-05-24 05:18:45> <jafo> 10 loops, best of 3: 37.9 msec per loop
2006-05-24 05:19:52> <jafo> guin:python-trunk$ python -m timeit -s 'import t' 't.main()'
2006-05-24 05:19:53> <jafo> 10 loops, best of 3: 37.9 msec per loop
2006-05-24 05:20:00> <jafo> And these are best of like a dozen runs.
2006-05-24 05:20:08> <mwh> your machine is faster than mine!
2006-05-24 05:20:30> <mwh> pybench stikes again
2006-05-24 05:20:37> <mwh> ^r
2006-05-24 05:20:39> <jafo> I don't know...
2006-05-24 05:39:22> <gbrandl> etrepum: I assigned a struct bug to you, perhaps you can look into it
2006-05-24 05:40:07> <etrepum> gbrandl: as long as it is reproducible on 32-bit.. I don't have any 64 bit machines
2006-05-24 05:44:31> *** ericvrp-lunch has joined #nfs
2006-05-24 05:47:03> <jafo> mwh: What about Fredrik's results?
2006-05-24 05:47:41> <jafo> That was done in 2.5a2, I'm told.
2006-05-24 05:48:30> <mwh> yikes
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2006-05-24 05:52:49> <gbrandl> etrepum: was there some mention of 64-bit in it? I don't really recall...
2006-05-24 05:53:05> <etrepum> gbrandl: I don't know, I still don't know which bug it is
2006-05-24 05:53:13> <gbrandl> oh
2006-05-24 05:53:17> <gbrandl> 1229380
2006-05-24 05:53:31> <etrepum> gbrandl: but I know there are bugs in 64-bit because the int size is different and the struct module works on C types
2006-05-24 05:53:39> <gbrandl> isn't it on the list in "My SF"?
2006-05-24 05:54:41> <etrepum> gbrandl: ah, yeah, I see it now. They moved that stuff around since I've last used it
2006-05-24 05:55:25> <gbrandl> they don't seem to employ any usability experts
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2006-05-24 06:31:07> <jafo> mwh: Ok, Tim solved the mystery of why it was the same. I was running "python" instead of "./python". I'm absolutely seeing a difference on Linux, Tim is seeing a difference on Windows.
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2006-05-24 07:32:41> <blais> emacs users
2006-05-24 07:32:47> <blais> if you edit document strings
2006-05-24 07:32:51> <blais> you will liek this
2006-05-24 07:32:54> <blais> (kjust wrote it)
2006-05-24 07:32:59> <blais> ;; For fixing up multi-line strings embedded in C code.
2006-05-24 07:33:00> <blais> (defun c-multiline-string-fixup (beg end)
2006-05-24 07:33:00> <blais> (interactive "r")
2006-05-24 07:33:00> <blais> (let ((mbeg (set-marker (make-marker) beg))
2006-05-24 07:33:00> <blais> (mend (set-marker (make-marker) end)))
2006-05-24 07:33:00> <blais> ;; Remove the current postfixes.
2006-05-24 07:33:02> <blais> (goto-char mbeg)
2006-05-24 07:33:04> <blais> (while (< (point) mend)
2006-05-24 07:33:06> <blais> (when (re-search-forward "\\\\n\\\\" (line-end-position) t)
2006-05-24 07:33:09> <blais> (goto-char (match-beginning 0))
2006-05-24 07:33:10> <blais> (delete-char 3))
2006-05-24 07:33:12> <blais> (forward-line 1))
2006-05-24 07:33:14> <blais> ;; Add the postfixes back in.
2006-05-24 07:33:16> <blais> (goto-char mbeg)
2006-05-24 07:33:18> <blais> (while (< (point) mend)
2006-05-24 07:33:20> <blais> (end-of-line)
2006-05-24 07:33:24> <blais> (insert "\\n\\")
2006-05-24 07:33:26> <blais> (forward-line 1))
2006-05-24 07:33:28> <blais> ;; Clear markers.
2006-05-24 07:33:30> <blais> (dolist (x (list mbeg mend)) (set-marker x nil))
2006-05-24 07:33:32> <blais> ))
2006-05-24 07:33:34> <blais> in c code
2006-05-24 07:33:36> <blais> will adjust the \n\ markers at the end of strings for ya
2006-05-24 07:35:45> <jafo> blais: The jotlive.com page has a link to pastebin.de, you should use that for that sort of thing.
2006-05-24 07:35:46> <gbrandl> jack_diederich: try out str(Decimal(222222222222222222222222222222222222222222222222222))
2006-05-24 07:36:45> <blais> here, even better, this versoin you can remove the \n\ first, then edit, then have them put back
2006-05-24 07:36:51> <blais> (defun c-multiline-string-fixup (beg end)
2006-05-24 07:36:51> <blais> "Replace or remove (with prefix arg) trailing \n\ chars within the region.
2006-05-24 07:36:51> <blais> This is useful for editing multi-line strings in C."
2006-05-24 07:36:51> <blais> (interactive "r")
2006-05-24 07:36:55> <blais> (let ((mbeg (set-marker (make-marker) beg))
2006-05-24 07:36:55> <blais> (mend (set-marker (make-marker) end)))
2006-05-24 07:36:56> <blais> ;; Remove the current postfixes.
2006-05-24 07:36:58> <blais> (goto-char mbeg)
2006-05-24 07:37:00> <blais> (while (< (point) mend)
2006-05-24 07:37:02> <blais> (when (re-search-forward "\\\\n\\\\" (line-end-position) t)
2006-05-24 07:37:04> <blais> (goto-char (match-beginning 0))
2006-05-24 07:37:06> <blais> (delete-char 3))
2006-05-24 07:37:08> <blais> (forward-line 1))
2006-05-24 07:37:10> <blais> (unless current-prefix-arg
2006-05-24 07:37:12> <blais> ;; Add the postfixes back in.
2006-05-24 07:37:14> <blais> (goto-char mbeg)
2006-05-24 07:37:16> <blais> (while (< (point) mend)
2006-05-24 07:37:18> <blais> (end-of-line)
2006-05-24 07:37:20> <blais> (insert "\\n\\")
2006-05-24 07:37:24> <blais> (forward-line 1)))
2006-05-24 07:37:26> <blais> ;; Clear markers.
2006-05-24 07:37:28> <blais> (dolist (x (list mbeg mend)) (set-marker x nil))
2006-05-24 07:37:30> <blais> ))
2006-05-24 07:37:32> <blais> (define-key c-mode-map [(control c)(\\)] 'c-multiline-string-fixup)
2006-05-24 07:37:34> <blais> enjoy
2006-05-24 07:41:00> <mwh> blais: pastebin.de
2006-05-24 07:51:53> <jafo> Calling Mr. Blivious. Mr. Martin O. Blivious.
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2006-05-24 10:11:33> <gbrandl> blais_: do you want to copyright your next code file to me?
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2006-05-24 10:23:23> <blais_> huh?
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2006-05-24 10:33:01> <Yhg1s> heh, getting a lot of NFS questions here, I guess? ;)
2006-05-24 10:37:40> <gbrandl> blais_: you copyrighted your test file to Greg P. Smith ;)
2006-05-24 10:46:18> <etrepum> Is it likely to break anything if I return int instead of long from struct when they're small enough to fit?
2006-05-24 10:47:05> <etrepum> creating and working with long is awfully slow
2006-05-24 10:56:53> <Yhg1s> etrepum: no, it shouldn't.
2006-05-24 10:57:17> <Yhg1s> (assuming we're talking about Python ints and longs; C ints and longs should be automatically converted, and not slow anyway)
2006-05-24 11:03:43> <etrepum> C ints and longs are the same thing on most architectures...
2006-05-24 11:04:06> <blais_> brnadl: you can see how much I care abouw copyrights
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2006-05-24 11:15:31> <Yhg1s> etrepum: yes (except for me, as I mostly have em64t machines), hence 'not slow'
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2006-05-24 11:47:05> <bcannon> exit
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2006-05-25 01:51:34> <jafo> j0
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2006-05-25 02:56:31> <The_Ball> is there a network filesystem channel?
2006-05-25 03:02:22> <ferringb> not here ;)
2006-05-25 03:10:51> <jafo> The_Ball: Yeah, no idea. Sorry.
2006-05-25 03:11:34> <jafo> When we set up the channel on Sunday, it didn't exist for at least the previous day.
2006-05-25 03:12:18> <The_Ball> i see
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2006-05-25 04:32:46> <Yhg1s> jafo: will you sprinters be doing any sightseeing in iceland? I can highly recommend it, it's an extremely beautiful island (although my favourite spots are more than 7 hours drive away from reykjavik ;P)
2006-05-25 06:21:46> <ccpRichard> They went out to the Blue Lagoon this morning
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2006-05-25 07:43:52> <jafo> Yhg1s: We ewnt to a viking dinner last night, and a today we just got back from the Blue Lagoon.
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2006-05-25 08:32:01> <blais> t
2006-05-25 08:32:07> <jack_diederich> est
2006-05-25 08:35:03> <blais> http://furius.ca/tmp/nfs3/html/dirindex.html
2006-05-25 08:35:04> <blais> new pics
2006-05-25 08:35:07> <blais> from the lagoon
2006-05-25 08:35:09> <blais> and last nite
2006-05-25 08:35:13> <blais> enjoy
2006-05-25 08:38:37> <efm> thanks blais
2006-05-25 08:43:45> <blais> hey evelyn wazzup, sitting here next to jafo
2006-05-25 08:45:46> <jafo> Hi, efm.
2006-05-25 08:46:05> <efm> just getting up. It's another beautiful day in Colorado. Kitties are wonderful.
2006-05-25 08:46:29> <efm> Looks like you're having a great time. I've wanted to visit the Blue Lagoon for many years. I hear it's great.
2006-05-25 08:46:41> <efm> hi jafo
2006-05-25 09:10:46> <Yhg1s> the blue lagoon is nice, but not as nice as the parts of Iceland that aren't as close to Reykjavik :)
2006-05-25 09:11:15> <Yhg1s> warmer than Jokulsarlon though.
2006-05-25 09:11:46> <Yhg1s> (sorry, Jökulsárlón)
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2006-05-25 09:18:36> <jafo> Yeah, but, you know, we're working. This was just a morning trip.
2006-05-25 09:20:48> <Yhg1s> good thing I'm not there, I don't know if I'd been able to resist the temptation to keep driving :)
2006-05-25 09:21:36> <jafo> :-)
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2006-05-25 12:16:35> <jafo> :w
2006-05-25 12:16:39> <jafo> Ugh. Sorry.
2006-05-25 12:29:34> <holdenweb> ls
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2006-05-25 13:17:38> <krang> hey hey, anyone got a URL for a good tutorial on automounting home directories with NFS+LDAP?
2006-05-25 13:18:13> <krang> I don't seem to be able to find one
2006-05-25 13:18:33> <efm> krang: you'll want to try #linux-nfs on irc.oftc.net
2006-05-25 13:19:02> <krang> efm: cheers
2006-05-25 13:19:35> <krang> which *is* the best network for general linuxry?
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2006-05-25 13:20:30> <efm> It depends krang. I hang out on the channel for my local linux users group, and then use other networks for specific questions
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2006-05-25 13:21:27> <krang> I'm basically trying to get my sysadmin skills together, and have lots of questions.
2006-05-25 13:21:39> <krang> where's best for that?
2006-05-25 13:21:45> <efm> then I'd suggest hooking up with people locally.
2006-05-25 13:22:13> <krang> lol, I'm in rural Canada and had to shoot internet 5km with a wireless link. I think I'm SOL on that count :-)
2006-05-25 13:22:42> <efm> krang you can follow me to community.tummy.com 6667 #hackingsociety
2006-05-25 13:22:46> <krang> regardless, is there a directory for local groups somewhere?
2006-05-25 13:22:59> <krang> cheers dude
2006-05-25 13:24:23> <efm> krang: correction irc.community.tummy.com 6667 #hackingsociety
2006-05-25 13:24:32> <krang> gotcha
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2006-05-25 13:36:56> <jafo> I know this music.
2006-05-25 13:37:53> <jafo> krang/efm: Please take the discussion elsewhere. See the topic.
2006-05-25 13:38:36> <efm> yes jafo
2006-05-25 13:39:27> <krang> jafo: soz dude
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2006-05-25 13:40:16> <krang> back onto the topic, have any of you fine people seen a good tutorial on how to use NFS/LDAP for automounting home dirs?
2006-05-25 13:40:32> <efm> krang: you are on the wrong channel
2006-05-25 13:40:47> <jafo> krang: This is not the correct place to ask that.
2006-05-25 13:41:02> <krang> oh crap, i have to start reading topics
2006-05-25 13:41:05> <krang> sorry!
2006-05-25 13:41:18> <jafo> Thanks.
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2006-05-25 14:42:44> <jafo> svn+ssh://pythondev@svn.python.org/python/trunk/
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2006-05-25 15:12:26> <etrepum> that strange little test_float regression is fixed
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2006-05-25 15:54:34> <gbrandl> * mwh is tempted to reply to /F on python-dev with "are you drunk?"
2006-05-25 16:26:53> <etrepum> uh.. wtf.. check timemodule.c
2006-05-25 16:26:59> <etrepum> 46261 tim.peters #if defined(MS_WINDOWS) && !defined(__BORLANDC__)
2006-05-25 16:26:59> <etrepum> 15913 fdrake /* Win32 has better clock replacement
2006-05-25 16:26:59> <etrepum> 7713 guido #undef HAVE_CLOCK /* We have our own version down below */
2006-05-25 16:26:59> <etrepum> 46261 tim.peters #endif /* MS_WINDOWS && !defined(__BORLANDC__) */
2006-05-25 16:27:14> <etrepum> the comment isn't closed... so #undef HAVE_CLOCK never happens
2006-05-25 16:27:17> <etrepum> that can't be intentional can it?
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2006-05-26 03:30:04> <holdenweb> Nice benchmarks on .../Successes, John!
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2006-05-26 03:54:37> <etrepum> runarp: http://groups.google.com/group/comp.lang.python/browse_thread/thread/58602fc81c2df1c8/19a6705e220c7569?lnk=raot#19a6705e220c7569
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2006-05-26 07:16:34> <amk_> Martin and Bob: test_struct.py now does things like 's = struct.Struct(fmt)'.
2006-05-26 07:16:42> <amk_> Is the intention that the Struct class is now part of the public interface?
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2006-05-26 07:27:38> <jafo> That's crazy talk!
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2006-05-26 07:34:01> <etrepum> amk_: yes, it's public API. There's a doc patch, but it needs to be revised.
2006-05-26 07:39:06> <amk_> OK; I'll mention it in the what's-new, then. Thanks!
2006-05-26 07:53:40> <amk_> Will you also be adding a pack_to() module-level function?
2006-05-26 07:54:50> <etrepum> I suppose we should for symmetry
2006-05-26 07:55:19> <etrepum> but it's not going to be commonly useful, there are very few objects that implement the write buffer protocol
2006-05-26 07:57:28> <etrepum> is there an IRC bot that announces python commits?
2006-05-26 08:00:47> <jafo> There's one that criticizes python commits...
2006-05-26 08:02:00> <etrepum> true
2006-05-26 08:09:46> <holdenweb> pybench wasn't distributed with 2.4, right?
2006-05-26 08:12:11> <amk_> Steve: correct.
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2006-05-26 09:01:49> <blais> john / bob: http://furius.ca/nfs/ewt/results/r1.txt
2006-05-26 09:01:53> <blais> some new results
2006-05-26 09:01:59> <blais> profiling
2006-05-26 09:02:07> <blais> a single funcall per message makes it slower...
2006-05-26 09:02:10> <blais> (python funcal)
2006-05-26 09:02:36> <blais> so we go from 28s to 22s with the hot bufferola
2006-05-26 09:04:22> <jafo> "You just spent a week saving 6 seconds, tell our viewers how you fee."
2006-05-26 09:04:31> <blais> hehe
2006-05-26 09:05:01> <blais> well that's on a 10MB file rather than a 5G
2006-05-26 09:05:24> <jafo> "You're WAY above our viewers heads."
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2006-05-26 09:11:57> <blais> etrepum
2006-05-26 09:12:08> <blais> john / bob: http://furius.ca/nfs/ewt/results/r1.txt
2006-05-26 09:15:30> <blais> jafo: here's how i fee, or whatever you mean, http://furius.ca/nfs/ewt/blobxxx.py
2006-05-26 09:16:37> <etrepum> blais: excellent
2006-05-26 09:16:56> <etrepum> blais: is hotbuf on the trunk?
2006-05-26 09:17:02> <jafo> blais: Excellent.
2006-05-26 09:17:25> <blais> hotbuf in /sandbox/trunk/hotbuf
2006-05-26 09:17:28> <blais> the example isn't though
2006-05-26 09:17:44> <blais> johnny: can I add your blobxxx.py in the python sandbox?
2006-05-26 09:19:15> <blais> jafo: no, not excellent, on a larger buffer hotbuf is about the same
2006-05-26 09:19:23> <blais> will run oprofile
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2006-05-26 09:26:40> <etrepum> sandbox/trunk/hotbuffer
2006-05-26 09:26:50> <blais> ohnny: can I add your blobxxx.py in the python sandbox?
2006-05-26 09:27:08> <blais> svn+ssh://pythondev@svn.python.org/sandbox/trunk/hotbuffer
2006-05-26 09:27:37> <blais> sorry about that, i just moved it before (it's now an extension module)
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2006-05-26 09:44:50> <jafo> I noticed yesterday that when I went down the stairs there was this huge rush of air up. Now I'm sitting by the door to the door by the elevators. It's clear that the doors being open up here is sucking the air out of the rest of the hotel.
2006-05-26 09:45:17> <jafo> Hopefully, the rest of the guests can live in a perfect vacuum.
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2006-05-26 09:53:51> <jafo> holdenweb: Scotty, where's that new trunk pybench?
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2006-05-26 09:58:33> <holdenweb> slight problem with the dilithium crystal, cap'n
2006-05-26 09:59:05> <holdenweb> ah cannae hold them together and they'll no process ther options. come help me debug!
2006-05-26 10:26:22> <etrepum> blais: I committed the unpack implementation to hotbuf and added some tests for the pack and unpack methods of hotbuf
2006-05-26 10:28:19> <holdenweb> trunk pybench now checked in
2006-05-26 10:32:48> <jafo> Yay!
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2006-05-26 11:19:34> <blais> etrepum: your tab setting is at 5
2006-05-26 11:19:52> <etrepum> no it's not
2006-05-26 11:21:32> <etrepum> I love the C API docs
2006-05-26 11:21:32> <etrepum> XXX blah, blah.
2006-05-26 11:26:21> <blais> dang
2006-05-26 11:26:25> <blais> it's still slowr
2006-05-26 11:26:40> <blais> i made restore() take an arg for advancing
2006-05-26 11:27:04> <blais> bob: it's merged BTW in case you're coding your descrpitor thingy
2006-05-26 11:27:14> <blais> (I mean committed)
2006-05-26 11:28:49> <blais> jbenedik: can I merge your ewt blobxxx.py into the python sandbox? would you me rather not? it could serve as a use case
2006-05-26 11:28:55> <blais> (for slowing down your programs, that is ;-))
2006-05-26 11:29:44> <jbenedik> heh, it is an internal api and i think i'd prefer not right now. if you want to generate some test message structures (for exercising netstring parsing and struct), thats fine
2006-05-26 11:30:10> <blais> noworries
2006-05-26 11:31:58> <blais> bob: it's still the dict lookups from getattr that kill it
2006-05-26 11:34:28> <blais> whoa
2006-05-26 11:34:37> <blais> caching the methods before the loop results in a big improvment
2006-05-26 11:37:41> <etrepum> blais: what is mark_position and mark_limit?
2006-05-26 11:37:54> <blais> the saved position and limit
2006-05-26 11:38:24> <jafo> You mean the marked position and limit.
2006-05-26 11:38:27> <etrepum> blais: should those even be exposed? should it be a 2-tuple instead?
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2006-05-26 11:47:19> <etrepum> blais: ok I rewrote the tp_members as tp_getset.. so buf.position = n should work
2006-05-26 11:47:38> <etrepum> blais: currently untested, I'm going to run through the code and look for ssize_t errors first.. there were some
2006-05-26 11:54:28> <blais> bobby: just commit when it's neat
2006-05-26 11:54:53> <blais> pos+limit: I suppose I don't need to expose them indeed
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2006-05-26 12:01:33> <blais> bob: your changes don't help the latest version, I don't set members anymore, just function calls (cached)
2006-05-26 12:01:38> <blais> there are still too many funcalls
2006-05-26 12:02:02> <blais> maybe I should implement some iteration protocol that works with the kind of length + msg format that EWT has
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2006-05-26 13:43:51> <jafo> Toodles
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2006-05-27 06:55:10> <etrepum> s = s[:length - 1]
2006-05-27 06:55:11> <etrepum> return s + '\x00' * (length - len(s))
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2006-05-27 08:45:17> <etrepum> cc: Info: ../Objects/exceptions.c, line 384: Extraneous semicolon. (extrasemi)
2006-05-27 08:45:24> <etrepum> cc: Warning: ../Modules/posixmodule.c, line 5451: In this statement, the referenced type of the pointer value "&status" is "int", which is not compatible with "union wait". (ptrmismatch)
2006-05-27 09:10:55> <etrepum> Program received signal SIGFPE, Arithmetic exception.
2006-05-27 09:10:55> <etrepum> 0x0000000160418568 in bu_double (p=0x12049d29c "", f=0x0) at /house/etrepum/src/python-46462/Modules/_struct.c:219
2006-05-27 09:10:56> <etrepum> 219 if (x == -1.0 && PyErr_Occurred())
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2006-05-27 09:51:15> <mwh> etrepum: re bug 1496032
2006-05-27 09:51:27> <mwh> i take it freebsd alpha starts up with fpu traps enabled?
2006-05-27 09:51:52> <etrepum> I have no idea, first time I've touched one
2006-05-27 09:52:18> <mwh> i see
2006-05-27 09:52:28> <mwh> do you have an account on one then?
2006-05-27 10:02:27> <etrepum> yeah I got a HP testdrive account so I could fix my damn regressions
2006-05-27 10:02:39> <etrepum> I couldn't find another way to get quick access to a 64-bit platform
2006-05-27 10:02:40> <mwh> oh right
2006-05-27 10:02:46> <mwh> i had one of them once
2006-05-27 10:04:20> <mwh> i wonder if my password still works
2006-05-27 10:07:13> <mwh> huh, apparently
2006-05-27 10:09:01> <mwh> or not
2006-05-27 10:11:59> * mwh hunts for the 'reset password' button
2006-05-27 10:14:40> <etrepum> SIGFPE looks fun
2006-05-27 10:15:55> <mwh> i can tell you about it on darwin/ppc :)
2006-05-27 10:18:48> <mwh> etrepum: look at Modules/main.c
2006-05-27 10:19:01> <mwh> maybe printf the result of fpgetmask?
2006-05-27 10:23:41> <etrepum> FreeBSD td149.testdrive.hp.com 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov 3 01:10:43 UTC 2005 root@ds10.freebie.xs4all.nl:/usr/obj/usr/src/sys/GENERIC alpha
2006-05-27 10:23:41> <etrepum> fpgetmask() = 0
2006-05-27 10:24:29> <mwh> bleh
2006-05-27 10:25:05> <etrepum> 0x000000016025a568 in bu_double (p=0x1203be14c "", f=0x0) at /house/etrepum/src/python-46462/Modules/_struct.c:219
2006-05-27 10:25:06> <etrepum> 219 if (x == -1.0 && PyErr_Occurred())
2006-05-27 10:25:06> <etrepum> (gdb) p/x fpgetmask()
2006-05-27 10:25:06> <etrepum> $1 = 0x0
2006-05-27 10:25:06> <mwh> what happens if you type 1/1e-310 interactively?
2006-05-27 10:25:27> <etrepum> >>> 1/1e-310
2006-05-27 10:25:27> <etrepum> Floating exception (core dumped)
2006-05-27 10:25:38> <mwh> right
2006-05-27 10:25:42> <etrepum> Program received signal SIGFPE, Arithmetic exception.
2006-05-27 10:25:42> <etrepum> 0x000000012005c28c in _Py_HashDouble (v=5.5511151231257827e-17) at ../Objects/object.c:995
2006-05-27 10:25:42> <etrepum> 995 if (fractpart == 0.0) {
2006-05-27 10:25:47> <mwh> so fpgetmask() is lying, it would seem...
2006-05-27 10:25:51> <etrepum> sweet
2006-05-27 10:26:05> <mwh> gdb too, if it really thinks it crashed on that line...
2006-05-27 10:26:19> <etrepum> well it wasn't a debug build
2006-05-27 10:26:49> <mwh> oh right
2006-05-27 10:27:03> <etrepum> does --with-pydebug imply -O0 ?
2006-05-27 10:27:07> <mwh> that line is _PyHash_Double though, very odd
2006-05-27 10:27:09> <mwh> yes it does
2006-05-27 10:27:47> <etrepum> why would it be hashing a double to do division?
2006-05-27 10:28:21> <mwh> i doubt it is
2006-05-27 10:29:01> <etrepum> 1e-310 by itself dumps core
2006-05-27 10:29:16> <mwh> urk
2006-05-27 10:29:40> <mwh> it's a denorm, i guess Underflow is getting signalled
2006-05-27 10:29:45> <etrepum> core dump at the same place with gdb --args ./python -c '1e-310'
2006-05-27 10:30:11> <etrepum> IEEEtastic
2006-05-27 10:30:19> <mwh> what does the stack look like?
2006-05-27 10:30:32> <mwh> ieee mandates starting up in non-stop mode, not their fault here :)
2006-05-27 10:31:13> <etrepum> oh! it's in the compiler
2006-05-27 10:31:24> <mwh> ah haha
2006-05-27 10:31:29> <etrepum> http://rafb.net/paste/results/GdojeP93.html
2006-05-27 10:31:30> <mwh> yes, for co_consts
2006-05-27 10:31:32> <etrepum> yup
2006-05-27 10:31:41> <mwh> try 1e-308/20 then :)
2006-05-27 10:31:51> <mwh> i think 1e-308 should be normalized
2006-05-27 10:32:19> <etrepum> 1e-308 dumps
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2006-05-27 10:32:47> <mwh> odd
2006-05-27 10:32:49> <etrepum> 1e-307 doesn't dump
2006-05-27 10:32:56> <mwh> oh right
2006-05-27 10:33:03> <mwh> 1e-307/1e10 ?
2006-05-27 10:33:14> <etrepum> >>> 1e-307/1e10
2006-05-27 10:33:15> <etrepum> 0.0
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2006-05-27 10:33:33> <mwh> huh
2006-05-27 10:33:39> <etrepum> >>> 1e-307/1e-307
2006-05-27 10:33:39> <etrepum> 1.0
2006-05-27 10:33:39> <etrepum> >>> 1e-307/1e-306
2006-05-27 10:33:39> <etrepum> 0.099999999999999992
2006-05-27 10:33:42> <mwh> >>> 1e-307/1e10
2006-05-27 10:33:42> <mwh> 1.0000002306925374e-317
2006-05-27 10:33:54> <etrepum> >>> 1e-307/1e1000
2006-05-27 10:33:55> <etrepum> Floating exception (core dumped)
2006-05-27 10:34:05> <mwh> maybe it would be better to not try to pretend the alpha does ieee arithmetic
2006-05-27 10:34:15> <mwh> etrepum: i bet 1e1000 on its own will do that
2006-05-27 10:34:16> <etrepum> haha
2006-05-27 10:34:37> <mwh> are you compiling with -mieee ?
2006-05-27 10:34:48> <mwh> i forget if that's relevant any more
2006-05-27 10:35:31> <etrepum> I didn't specify anything special
2006-05-27 10:36:09> <etrepum> and I don't see anything special in the compile..
2006-05-27 10:36:09> <etrepum> gcc -pthread -fPIC -fno-strict-aliasing -g -Wall -Wstrict-prototypes -I. -I/house/etrepum/src/python-46462/./Include -I../Include -I. -I/usr/local/include -I/house/etrepum/src/python-46462/Include -I/house/etrepum/src/python-46462/_freebsd_debug -c /house/etrepum/src/python-46462/Modules/_struct.c -o build/temp.freebsd-6.0-RELEASE-alpha-2.5/house/etrepum/src/python-46462/Modules/_struct.o
2006-05-27 10:36:16> <mwh> harum
2006-05-27 10:36:30> <mwh> googling is suggesting kernel bugs...
2006-05-27 10:37:52> <mwh> how long do builds take on this machine?
2006-05-27 10:37:55> <etrepum> a while
2006-05-27 10:38:04> <etrepum> like 30 min maybe
2006-05-27 10:38:16> <mwh> cause i think adding -mieee to CFLAGS might help after all
2006-05-27 10:38:18> <mwh> http://ftp4.de.freebsd.org/pub/FreeBSD/gnats/gnats/alpha/36327
2006-05-27 10:38:25> <mwh> that's from 2002 though
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2006-05-27 10:39:02> <mwh> hum
2006-05-27 10:39:06> <mwh> oh i don't know
2006-05-27 10:39:15> <mwh> who actually cares about freebsd/alpha? :)
2006-05-27 10:40:17> <etrepum> I don't
2006-05-27 10:40:43> <mwh> me neither
2006-05-27 10:40:57> <mwh> i'll stop worrying about it then, i think
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2006-05-27 10:52:00> <etrepum> there's probably some compiler flags that'll make it work
2006-05-27 10:52:20> <etrepum> apparently alpha just doesn't do denorm stuff and you have to deal with it in software
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2006-05-27 15:55:54> <mwh> so something caused a LOT of leaks...
2006-05-27 15:56:15> <mwh> i'm guessing it's exception related...
2006-05-27 16:41:09> <Yhg1s> mwh: not trivially reproduced, though.
2006-05-27 16:41:24> <Yhg1s> simple exception tossing doesn't reproduce it, but running the same simple test through doctest does.
2006-05-27 16:54:40> <mwh> i found that test.test_support.check_syntax reliably leaks 5 references
2006-05-27 16:55:23> <mwh> as does compile('1=1', '', 'exec') in fact
2006-05-27 16:58:24> <mwh> it's leaking a tuple containing two Nones a string and an int, i think
2006-05-27 17:00:19> <mwh> oh well, i guess sean and richard know what they changed...
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2006-05-28 03:04:18> <jafo> NfS article I wrote is up on lwn.net
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2006-05-28 18:36:21> <JZA> hi anyone help me share some folders
2006-05-28 18:37:39> <JZA> anyone here
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2006-05-29 02:28:39> <runarp> made it back to LA. Thanks everyone for a great sprint.
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2006-05-29 09:43:34> <stakkars> hi! this thing is going to be long-lived?
2006-05-29 09:49:18> <mwh> i would guess not
2006-05-29 09:49:26> <mwh> i'm just a loiterer :)
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2006-05-30 01:43:37> <jafo> Well, nfsbot and I are going to vacate the channel. Thanks for a great time everyone.