ports/131122: port devel/gamin default polling frequency increases load w/ large kern.maxfiles
Graham Todd <firstname.lastname@example.org>
gtodd at bellanet.org
Thu Jan 29 15:10:03 UTC 2009
>Synopsis: port devel/gamin default polling frequency increases load w/ large kern.maxfiles
>Arrival-Date: Thu Jan 29 15:10:01 UTC 2009
>Originator: Graham Todd <gtodd at bellanet.org>
>Release: FreeBSD 7.1-PRERELEASE-p1 i386
System: FreeBSD 7.1-PRERELEASE-p1 #0: Mon Nov 24 11:49:24 UTC 2008 root at i386-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC i386
gam_server consumes a relatively high level of CPU (10%) which pushes overall load quite high for a desktop system. CPU and memory hogging should be the exclusive domain of firefox-bin ;-) ...
This appeared on my systems with gamin-0.1.10 and recent gnome upgrade whcih required a higher kern.maxfiles setting. Perhaps gam_server now uses a more frequent default polling interval or the higher kern.maxfiles setting increased its workload.
The FreeBSD gamin port/pkg does not include these files:
These files can be used to tune polling frequency.
Increase kern.maxfiles to a large number run gam_server and untar/compile several large source packages. The application will begin to consume a large set CPU.
The fix below seems to work and simply reduces the polling frequency from the default setting. I did this by creating the following files:
# reduce polling frequency to once per 10 seconds
# in order to lower CPU load
fsset ufs poll 10
fsset zfs poll 10 # does this work?
A default /usr/local/etc/gamin/gaminrc or /usr/local/etc/gamin/mandatory_gaminrc could be included with the port that documented some of the possible configuration settings and defaults for gam_server.
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