Am Montag, 28. Juni 2010, 15:44:42 schrieb Kris Moore: > On 06/25/2010 17:15, Tijl Coosemans wrote: > > On Friday 25 June 2010 19:41:11 Kris Moore wrote: > >> On 06/25/2010 12:37, Tijl Coosemans wrote: > >>> KDE currently uses polling to detect file and directory changes > >>> on FreeBSD, which can use up cpu time (and laptop battery > >>> power). The kded4 process seems to make heavy use of this and > >>> currently continuously consumes about 5% of my cpu and often > >>> causes it to be throttled up by powerd. > >>> > >>> I've attached a patch that makes KDE use QFileSystemWatcher on > >>> FreeBSD which uses kqueue instead of stat. I've been using it for > >>> the past few days and it seems to work rather well. > >>> > >>> One thing I'm not sure about is whether it works with NFS, so it > >>> could use some more testing. If you'd like to test it, replace > >>> /usr/ports/x11/kdelibs4/files/patch-kio-kio-kdirwatch.cpp with > >>> the attached patch and reinstall kdelibs. > >> > >> Just built with this patch here. It does greatly improve my > >> kdeinit4 processes, went from a constant 8-10% to 0-1%. > >> > >> However, it does mess up NFS. When browsing my NFS mounts it > >> doesn't show any directory/file changes until I manually refresh > >> the view. Is this something fixable? > > > > It can be fixed in Qt or in KDE. Both already provide polling as a > > fallback and it would be easy to add some logic similar to what > > devel/gamin does (call statfs(2) on the given path and use kqueue > > when MNT_LOCAL is set, polling otherwise). > > > > For now, you can also add the following to your ~/.kderc: > > > > [DirWatch] > > nfsPreferredMethod=Stat > > Great, that seems to work. I was also able to add it to > /usr/local/kde4/share/config/kdeglobals and it seems to take effect > as well. This is such a reduction in CPU usage that this patch > really should be enabled by default :)
Great :), will the dependency on gamin/fam now be dropped altogether? Regards, Hannes _______________________________________________ kde-freebsd mailing list kde-freebsd@kde.org https://mail.kde.org/mailman/listinfo/kde-freebsd See also http://freebsd.kde.org/ for latest information
