On Tue, Oct 27, 2009 at 8:59 AM, Mark McLoughlin <markmc@xxxxxxxxxx> wrote: > Hi Tom, > > On Tue, 2009-10-27 at 08:58 -0700, Tom London wrote: >> I'm running Rawhide with a qemu-kvm VM that runs WinXP. >> >> I'm noticing 'ksmd' running at a constant 15-25% of my cpu, for example: >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> 32 root 25 5 0 0 0 S 21.2 0.0 2:06.75 ksmd >> 2265 tbl 20 0 1227m 530m 8256 R 17.2 13.5 3:09.05 qemu-kvm >> 1599 root 20 0 220m 42m 17m S 5.3 1.1 0:55.02 Xorg >> 2203 tbl 20 0 1234m 62m 24m S 5.0 1.6 0:28.93 rhythmbox >> >> Checking, I see that "ksmd" is running, but "ksmtuned" is not. >> >> System is Thinkpad X200 with 4GB RAM. VM image is configured at 512MB. >> >> Is this "to be expected" behavior? > > We're just discussing something similar on the fedora-virt list > > Currently, ksm is enabled by default in the kernel - since it's disabled > by default in 2.6.32, we'll probably switch to that behaviour > > Do you have the ksm or ksmtuned init scripts enabled? Does enabling > ksmtuned help reduce the CPU usage? > > Cheers, > Mark. > Appears that Rawhide has "ksmd" enabled by default. "ksmtuned" is not enabled by default. Starting ksmtuned via [root@tlondon init.d]# service ksmtuned start Starting ksmtuned: [ OK ] [root@tlondon init.d]# Had no immediate effect (in fact, appeared to increase CPU up to about 28-30%) for about a minute or 2. But after that, top no longer reports ksmd: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2265 tbl 20 0 1227m 530m 8256 S 17.2 13.5 6:04.56 qemu-kvm 2298 tbl 20 0 849m 161m 27m S 13.2 4.1 1:18.68 firefox 1599 root 20 0 219m 44m 17m S 9.3 1.1 1:28.51 Xorg 2203 tbl 20 0 1235m 64m 24m S 4.0 1.6 0:53.86 rhythmbox 1903 tbl 9 -11 541m 29m 28m S 3.0 0.8 0:23.55 pulseaudio But I notice that "ksm" appears off: [root@tlondon init.d]# service ksm status ksm is not running [root@tlondon init.d]# service ksmtuned status ksmtuned (pid 2559) is running... [root@tlondon init.d]# Interesting tuning.... ;) Any idea what is going on? tom -- Tom London -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
