[Zope] Re: [Psycopg] Zope crashing

[Federico Di Gregorio]

On Wed, 2001-09-19 at 18:59, Mayers, Philip J wrote:
> I'm still seeing periodic/sporadic crashes of my Zope installation, and it's
> getting *REALLY* annoying :o)
> 
> I sometimes get a core file (if I'm lucky) whose backtrace normally reads:
> 
> Program terminated with signal 11, Segmentation fault.
> <snip>
> #0  0x401364fe in __select () from /lib/libc.so.6
> (gdb) bt
> #0  0x401364fe in __select () from /lib/libc.so.6
> #1  0x4031708c in __DTOR_END__ () from /usr/lib/libpq.so.2
> #2  0x4030ecad in PQgetResult () from /usr/lib/libpq.so.2
> #3  0x4030ee1c in PQexec () from /usr/lib/libpq.so.2
> #4  0x402f9acb in curs_switch_autocommit () from
> /usr/lib/python2.1/site-packages/psycopgmodule.so
> #5  0x402fa0e8 in curs_switch_autocommit () from
> /usr/lib/python2.1/site-packages/psycopgmodule.so

this is _strange_ because ZPsycopgDA *does* *not* support autocommit and
there is no way to enable it while using psycopg with Zope. 

[snip]
> #32 0x8058aef in PyEval_CallObjectWithKeywords ()
> <etc down to 138>
> 
> Note the depth of the call stack...

noted.

> Is this a problem with psycopg or Zope? Is anyone else seeing it? I'm unable
> to repro these consistently even under high load, which leads me to think
> there's an edge case coming into play here - but I don't know what. With -M
> logging turned on and using requestprofiler, I see:

sincerely i don't know. i am running some SQL Methods right now (with an
--enble-devel compiled psycopg) and curs_switch_autocommit() does not
get called. what version of zope/psycopg are you using? how have you
compiled it?

thank you for the report,
federico

-- 
Federico Di Gregorio
MIXAD LIVE Chief of Research & Technology              fog@mixadlive.com
Debian GNU/Linux Developer & Italian Press Contact        fog@debian.org
  99.99999999999999999999% still isn't 100% but sometimes suffice. -- Me

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