On Tue, Jul 15, 2008 at 11:52:35AM -0400, Dan Williams wrote: > On Mon, 2008-07-14 at 14:57 -0700, Ulrich Drepper wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > One of the worst problems wrt energy savings we have today are all the > > wakeups processes request. This is not just an issue for laptops, it > > relevant everywhere. > > > > To see the size of the problem run the attached systemtap script. On my > > laptop I see the following output (47 secs runtime): > > > > uid | poll select epoll itimer futex nanosle signal| process > > 29799 |15941 7971 0 0 0 0 0| npviewer.bin > > 29841 | 253 0 0 0 1531 0 0| thunderbird-bin > > 3017 | 447 0 0 0 0 0 0| pulseaudio > > 2467 | 76 0 0 0 0 0 0| hald > > 2471 | 8 0 0 0 0 0 0| hald-runner > > 2620 | 58 0 0 0 0 0 0| NetworkManager > > While there are probably stupidities in NM, there are also known > externally-driven wakeup causes including: > > 1) until 2.6.27 lands, there's no way to get the rfkill switch > state-change events, so NM polls them every 6 seconds _iff_ they exist. > Unfortunately, they often exist in HAL even though there are no physical > switches on the laptop because the nice rfkill patches haven't landed > yet (again, scheduled for 2.6.27) Ahhh, so that's probably what's causing /usr/libexec/hal-ipw-killswitch-linux to be run every 6 seconds, which in turns causes any app connected to DBus system bus to be send a signal every 6 seconds and thus causes all the hits against libvirtd - and a fair number of other apps in that list too Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
