Re: [Zope] Zope hangs in FreeBSD with plenty of memory and CPU resources
Hmmm...unfortunately, that's not the cause of the problem (I'm responding since I'm on the East coast, Jean is on the West, and he's asleep right now): [EMAIL PROTECTED]: ~$ python Python 2.4.3 (#2, Jul 2 2006, 16:14:54) [GCC 3.4.2 [FreeBSD] 20040728] on freebsd5 Type help, copyright, credits or license for more information. import sys sys.getrecursionlimit() 1000 Though I do appreciate you forwarding that URL along, because a *lot* of people have suggested the Python stack issue, and until now, we've been unable to definitively rule that out. It's almost as good to clear one problem as the potential cause as it is to fix things. :-) Alex Kirk http://plone.org/documentation/faq/plone-on-bsd-python-stack Stefan On 26. Feb 2007, at 06:06, Jean Lagarde wrote: All, As a coincidence, that hang of Zope I mentioned in a message I posted yesterday has happened again today (second time), after a planned reboot. So here is a completely different issue from the memory one we've been discussing today. -- Anything that, in happening, causes something else to happen, causes something else to happen. --Douglas Adams ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Zope hangs in FreeBSD with plenty of memory and CPU resources
My understanding is that get/setrecursionlimit is for the python internal limit and is not an indicator of the THREAD_STACK_SIZE value, but in any case, yes, we have compiled with that option and I don't think that these would be the symptoms I would see for a stack size issue anyway, but thanks for the suggestion! -- Jean On 2/26/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hmmm...unfortunately, that's not the cause of the problem (I'm responding since I'm on the East coast, Jean is on the West, and he's asleep right now): [EMAIL PROTECTED]: ~$ python Python 2.4.3 (#2, Jul 2 2006, 16:14:54) [GCC 3.4.2 [FreeBSD] 20040728] on freebsd5 Type help, copyright, credits or license for more information. import sys sys.getrecursionlimit() 1000 Though I do appreciate you forwarding that URL along, because a *lot* of people have suggested the Python stack issue, and until now, we've been unable to definitively rule that out. It's almost as good to clear one problem as the potential cause as it is to fix things. :-) Alex Kirk http://plone.org/documentation/faq/plone-on-bsd-python-stack Stefan On 26. Feb 2007, at 06:06, Jean Lagarde wrote: All, As a coincidence, that hang of Zope I mentioned in a message I posted yesterday has happened again today (second time), after a planned reboot. So here is a completely different issue from the memory one we've been discussing today. -- Anything that, in happening, causes something else to happen, causes something else to happen. --Douglas Adams ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Zope hangs in FreeBSD with plenty of memory and CPU resources
All, As a coincidence, that hang of Zope I mentioned in a message I posted yesterday has happened again today (second time), after a planned reboot. So here is a completely different issue from the memory one we've been discussing today. There was other weirdness (for whatever reason _mysql could not find libmysqlclient_r.so.15 on some restart attempts), but here is something that seemed to occur consistently while Zope was unresponsive: On FreeBSD 5.4, with zserver-threads set to the default 4, there were seven Zope threads with the following states (CPU use is 0% and memory use is well below the maximum, pretty much where it is at after a normal fresh Zope restart): select ksesig kserel kqread kqread kqread kqread When Zope is operating normally and idle, I generally only see the three top threads, and when serving pages, I rarely see more than three threads; one actually often disappears and I only see two, one in the RUN state. I know that the kqread state has to do with the kqueue or kevent system call, and assume that Zope being in that waiting state for a long time is abnormal. Asking here in case someone has seen this behavior before and knows what might be the cause. As for the last and only other time this happened, Zope regained normal behavior by itself after a little while (in the order of half an hour). I don't see anything abnormal in the event log (other than the _mysql issue I mentioned above), and while stuck, requests do not register in the Z2.log. Browsers do get a connection because they state waiting for... but they do not receive anything, not even headers. After a fresh restart, I could get Zope to respond to a relatively benign request (the top level ZMI page), while there were only three Zope threads, but if asking for more, Zope would quickly get to the unresponsive state described above. We're thinking that we may be having underlying OS issues and will probably ask on a FreeBSD list and/or upgrade FreebBSD and hope that helps, but I'm asking here first just in case that this pattern of behavior was observed and resolved before. Cheers, Jean ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Zope hangs in FreeBSD with plenty of memory and CPU resources
http://plone.org/documentation/faq/plone-on-bsd-python-stack Stefan On 26. Feb 2007, at 06:06, Jean Lagarde wrote: All, As a coincidence, that hang of Zope I mentioned in a message I posted yesterday has happened again today (second time), after a planned reboot. So here is a completely different issue from the memory one we've been discussing today. -- Anything that, in happening, causes something else to happen, causes something else to happen. --Douglas Adams ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
