Re: [gamin] performance - growing cpu usage

[Daniel Veillard <veillard redhat com>]

On Mon, Jul 04, 2005 at 09:31:03AM +0300, Ivan Mitev wrote:
> hi !
> 
> following the resolution of bug 143865 
> (https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=143865), i've 
> replaced fam with gamin on a busy mail server (courier-imap with 300+ 
> accounts and idle feature turned on)
> 
> however, even with no load, gam_server seems to consume more and more 
> cpu cycles;  on the attached mrtg graph, you'll see that
> - until 16, fam was running with the same cpu usage (flat average), and 
> i've replaced it with gamin ; the peaks are because of tests  - moving 
> forth and back a hundred of mails - to check how fast they would 
> appear/disappear in thunderbird and the ressource used. everything was ok.
> - then, during the night, with almost no courier-imap activity (it's 
> sunday night, only a few email clients are up), the cpu usage slowly grows
> - this morning, a bit before 8, gam_server is quite always showing on 
> the 1st line of top, using a few cpu percents. -> revert back to fam :(
> 
> the monitored files are in /home, which is actually a mount --bind of 
> /mailspace1 ; /home/vmail/.gaminrc only contains "notify /home/*" to be 
> sure that polling is not used.

   polling will be used on busy resources, that can't be avoided.

> courier-imap always run under the vmail 
> account.
> 
> the kernel is from kernel.org - not patched with inotify. gamin's 
> version is 0.1.1, compiled from the site's source rpm for fedora core 2.
> 
> any idea ?

  sorry, no idea right now.

Daniel

-- 
Daniel Veillard      | Red Hat Desktop team http://redhat.com/
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