[+earle]
On 6/5/07, Dominic Hargreaves dom@earth.li wrote:
On Tue, Jun 05, 2007 at 09:58:37AM +0100, Paul Makepeace wrote:
A follow-up on a 2.5yr-old mail from your London OG admin,
OpenGuides London is frequently bursting 100% of a 3Ghz HT CPU which is causing stix (the server) load problems,
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 11060 www-data 19 0 18940 15m 2576 R 26.5 1.5 0:00.80 index.cgi 11040 www-data 19 0 21420 17m 2612 R 6.9 1.7 0:01.12 index.cgi 11039 www-data 19 0 21004 17m 2584 R 6.6 1.7 0:01.04 index.cgi 11048 www-data 19 0 21392 17m 2612 R 6.6 1.7 0:01.10 index.cgi 11051 www-data 19 0 21248 17m 2612 R 4.6 1.7 0:01.02 index.cgi
This CPU's nearly twice as fast as the server's the hosting was on when I last wrote this (the IO yet faster) and not using supersearch.cgi has obviously helped, all of which has bought some time, retrospectively. Some plan however to make use of mod_perl or other CPU-reduction measure needs to come into effect pretty soon.
What say ye?
I think this has to be directed at Earle in the first instance, as the rest of us are not party to the configuration or any statistics of london.openguides.org, or, for example, if the relevant database indexes are configured (this, I recall, improves certain expects of OpenGuides significantly).
The last time I tried OpenGuides under mod_perl it mostly worked, though for some reason that escaped me (possibly time) I never went as far as declaring it so - there were some niggles to clean up.
These days my own interest in persistent perl applications lies within FastCGI (since this allows one to run the application under its own user id) and restructing wiki.cgi et al to use CGI::Fast should be fairly simple (especially since CGI::Fast will also work in plain CGI mode) but since I'm not currently suffering from resource problems this isn't a priority for me.
http://dev.openguides.org/ticket/150
is one ticket about this issue.
Thanks Dom. FastCGI is another route that seems reasonable, in fact preferable probably since it's somewhat easier to hive off and debug resource issues than apache+mod_perl, specifically restarting an fcgi instance is less disruptive in a shared environment.
Can I request someone (Earle, with help from others if nec) propose a deadline on ameliorating this? I'm of course happy as usual to help from the admin end.
P
Dominic.
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