[Koha] Very high CPU usage

[Coehoorn, Joel]

Check the apache logs and find the web server log corresponding to those
requests. That should either give you a bot name you can use for a
robots.txt entry or an IP you can block at your firewall.

Joel Coehoorn
Director of Information Technology
York College of Nebraska


On Wed, Apr 21, 2021 at 8:12 AM Mike Lake <mikel at speleonics.com.au> wrote:

> Hi
>
> Lately our library instance is peaking at 100% CPU usage. When I login
> and use "htop" I can see the opac search and export is, every 30
> seconds, starting and using 100% CPU for 15 seconds or so. It then stops
> and 30 seconds later does it again. I'm averaging 80% CPU usage just
> from this.
>
> Logging in when the load is 100% I see:
>
> root at asf3:/etc/init.d# ps ax | grep opac
> 16412 ?        R      0:00 /usr/bin/perl
> /usr/share/koha/opac/cgi-bin/opac/opac-export.pl
>
> for several seconds and then
>
> root at asf3:/etc/init.d# ps ax | grep opac
> 19098 ?        R      0:02 /usr/bin/perl
> /usr/share/koha/opac/cgi-bin/opac/opac-search.pl
> 19100 ?        R      0:01 /usr/bin/perl
> /usr/share/koha/opac/cgi-bin/opac/opac-search.pl
>
> This problem started a few weeks ago. I'm using a dedicated virtual
> machine with 1 core and 2 GB RAM, 512 MB swap. The VM control panel
> shows its averaging 800 MB used out of 2GB but swap is fully used.
> This system had previously been adequate so something seems to have
> changed.
>
> What advice for narrowing down the problem? It's not a large
> installation.
> Any links to hardware/cpu/mem/swap requirements?
>
> --
> Mike Lake
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