[Setup] Re-post as: "Why Plone 4.2.3 page-loads slow if server not working hard?

[Jon Stahl]

David-

There are many people more expert at Plone performance tuning than I,
but it sounds like you need to configure your ZEO setup with more Zope
instances, the better to handle simultaneous users. Also, you should
probably setup some caching, to further reduce the load on your Zopes.
 IOW, you'll need to go a bit beyond "out of the box" install to
handle a lot of simultaneous editors.

https://plone.org/documentation/kb/scaling-and-performance offers some
good general background, although some details are a bit out of date.

Also: this is a question best posted to the plone-users list, where it
will be in front of many more eyes.  The setup list is mainly about
basic installation questions.

--Jon

On Tue, Feb 5, 2013 at 7:48 PM, dgroos <djgroos at gmail.com> 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
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