[Koha] Regular performance problems

Chris Hobbs chobbs at nhusd.k12.ca.us
Wed Mar 16 16:35:32 NZDT 2011

  On 3/14/11 10:23 AM, LAURENT Henri-Damien wrote:
> Hi
> Innodb file management is quite important for performance.
> We wrote a performance blog post
> http://www.biblibre.com/en/blog/entry/mysql-default-config-and-very-large-koha-database
> you might find it interesting.
> There also has been an interesting discussion on performance tweeking on
> apache on list
> http://www.mail-archive.com/koha-devel@lists.koha-community.org/msg00074.html
Just wanted to say thanks again to Henri, as well as to Cindy Murdock 
and Mason James in the linked e-mail exchange.

They say a picture is worth a thousand words. Here's the performance 
graphs of our server over the last 30 hours. The three spikes in the 
first graph each represent about 15 minutes of the system being 
completely unusable. After the third spike I took the web server down 
and got the database fixes implemented, and moved the zebra indexes to 
another disk. At about 2:30pm Monday I turned on mod_perl and you can 
see the result of that in the CPU Utilization graph (it's the cliff).

Today was a much better day :-)

Here's the picture: http://www.clanhobbs.org/moz-screenshot-2.png

Chris Hobbs
Director, Technology
New Haven Unified School District

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