[Zope] Request time grows with memory size
peterbe at gmail.com
Mon Apr 27 06:40:31 EDT 2009
What have you done to investigate memory leaks?
What external connectors are you using, like MySQL or LDAP?
2009/4/27 Gerhard Schmidt <estartu at ze.tum.de>:
> I've encounters a performance Problem with Zope. Some requests take very
> long time to process while others are served very fast. All request go for
> the URL. The time for the delayed Requests grows with the memory size of
> the Zope Process. It's direct proportional.
> I have generated a chart showing the request times and memory size of the
> Zope Process. The chart can be found at http://etustar.ze.tum.de/frontend.jpg
> Our watchdog system restarts the Zope Process when it reaches 7.3 Gig
> Memory. The physical memory of the server is 16 Gig and its only used for
> the zope Server. There are at least 7 Gig Memory free.
> As you can see most of the requests are delivered within 2 seconds but some
> take up to 12 seconds. The Requests monitored are the request of our
> watchdog system. These requests are send approximately every 20 sec.
> When I set the restart memory limit higher the request time of the delayed
> request continues to grows proportionally.
> This server is part of a pool of 19 Servers. All are connected to one ZEO
> server. All show the same effect.
> We observe the same effect with regular requests. Some are served at normal
> speed but some requests are delayed.
> Any idea what causes this effect and how to fix it.
> Gerhard Schmidt
> Gerhard Schmidt | E-Mail: schmidt at ze.tum.de
> TU-München |
> WWW & Online Services |
> Tel: 089/289-25270 |
> Fax: 089/289-25257 | PGP-Publickey auf Anfrage
> Zope maillist - Zope at zope.org
> ** No cross posts or HTML encoding! **
> (Related lists -
> http://mail.zope.org/mailman/listinfo/zope-dev )
More information about the Zope