First, make absolutely sure you are not running in debug or foreground mode. The performance hit is astonishing.
Then, take a read through http://developer.plone.org/reference_manuals/active/deployment/ to get an orientation on memory use, load balancing and caching. Unless you've tuned some memory settings, set up caching and configured load balancing, you're only going to use a fraction of the capacity of that server. Once you've got the concepts down, read http://developer.plone.org/performance for details. On Tue, Feb 5, 2013 at 7:48 PM, dgroos <[email protected]> wrote: > Hi All, > > Wish I could delete post from earlier today, this one is clearer and has a > more informative title. Please refer to this post. > > Our plone 4.2.3 site seems fairly snappy with single user. With 25 > students > simultaneously accessing the site (as authenticated members), things bogged > down to almost a halt--taking 3-5 or more minutes to simply load a page. I > deactivated as many non-essential add-ons as I could, including dropdown > menu, diazo and a theme, but still pages would still take 2-3 minutes to > load with a class of 25. > > Strangely, htop reported the processors rarely pegged 100%, and even after > 30 minutes of this painful process, the load averages were .48, and .36 (as > reported in htop)! And, again according to htop, the memory used was less > than 1/2 the physical RAM available! > > *Details: > *---Plone 4.2.3 zeo/root install running in production mode on our > districts > backbone--very good network specs. > ---Hardware is ProLiant DL380 G4, 2 cpu, dual-core Xeon CPU 3.20GHz > processors (total 4 cores), 6 GB RAM. > ---It is running Ubuntu 10.04. > ---Apache rewrite rules to serve on port 80. > ---Student computers access site from within district firewall (I'll try > pointing browser at the 10.x.x.x internal address and not FQDN next time). > ---Plone running "LDAP Support" uses the district's Active Directory > server. > > Any recommendations for areas to investigate? Things I could try? Logs to > check? I really want to use Plone with my students often, and I know I > can't > unless this nut can be cracked. > > *Here are further ZMI-reported specs: > *Zope Version (2.13.19, python 2.7.3, linux2) > Python Version 2.7.3 (default, Dec 30 2012, 17:12:59) [GCC 4.4.3] > System Platform linux2 > INSTANCE_HOME /usr/local/Plone/zeocluster/parts/client1 > CLIENT_HOME /usr/local/Plone/zeocluster/var/client1 > Network Services ZServer.HTTPServer.zhttp_server (Port: 8080) > Running For 22 days 23 hours 9 min 57 sec > (main database was small: 548 MB and after packing went down to 273 MB) > > Thanks for your work on Plone, > David Groos > > > > -- > View this message in context: > http://plone.293351.n2.nabble.com/Re-post-as-Why-Plone-4-2-3-page-loads-slow-if-server-not-working-hard-tp7562994.html > Sent from the Installation, Setup, Upgrades mailing list archive at > Nabble.com. > _______________________________________________ > Setup mailing list > [email protected] > https://lists.plone.org/mailman/listinfo/plone-setup >
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