[Zope] 2.2b3 hangs a lot

[Brian Lloyd]

> been running 2.2.0b3 for a few days now.  
> config
> redhat6.1
> postgres
> ZPygreSql
> kmnetnews
> 
> after some time, zope just hangs.  when i do top, there's no 
> processor usage at
> all on all python processes.  after a few minutes, zopes wake 
> up  and continue
> to serve.  the cycle continues after some time.  the hangup 
> is very sporadic.
> <snip>

If you look at the server logs when it hangs, do you see any 
pattern as to what was requested when this happens? I haven't 
been hearing of any hanging issues with the 2.2 betas, which 
makes me suspect that something specific to this site may be 
in play here.

The fact that it comes back to life on its own after a while 
makes me think that this is either a very strange system 
issue or tied up with something that has a timeout (for ex.
is it possible that a query is trying to run, timing out 
against the postgres database?) If the PygresSql DA is not 
fully thread-safe then I could imagine this as a possiblity.

Brian Lloyd        brian@digicool.com
Software Engineer  540.371.6909              
Digital Creations  http://www.digicool.com