Re: computer becomes slow when compiling something
- From: Robert Watson <rwatson@xxxxxxxxxxx>
- Date: Mon, 27 Aug 2007 23:14:58 +0100 (BST)
On Mon, 27 Aug 2007, Ganbold wrote:
I'm running FreeBSD 7.0-CURRENT with SCHED_ULE, INVARIANTS, WITNESS enabled kernel.
Try the same thing again without INVARIANTS and WITNESS, both of which can consume a lot of CPU in kernel on a very active system, especially if lots of vnodes are being allocated and freed. Especially WITNESS.
Robert N M Watson
Computer Laboratory
University of Cambridge
_______________________________________________
daemon# uname -an
FreeBSD daemon.micom.mng.net 7.0-CURRENT FreeBSD 7.0-CURRENT #2: Thu Aug 23 17:59:17 ULAT 2007 tsgan@xxxxxxxxxxxxxxxxxxxx:/usr/obj/usr/src/sys/GDAEMON i386
daemon#
When compiling something (buildworld or making wine for example) inside from X/gnome
my computer becomes very slow.
top shows while compiling wine:
last pid: 38660; load averages: 3.10, 2.24, 1.33 up 3+02:07:05 12:11:38
106 processes: 3 running, 102 sleeping, 1 zombie
CPU states: 90.2% user, 0.0% nice, 9.8% system, 0.0% interrupt, 0.0% idle
Mem: 704M Active, 63M Inact, 168M Wired, 39M Cache, 111M Buf, 21M Free
Swap: 2048M Total, 195M Used, 1853M Free, 9% Inuse
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
902 tsgan 1 96 0 147M 134M RUN 929:41 3.96% Xorg
38659 root 1 96 0 15556K 12256K RUN 0:00 3.47% cc1
1206 tsgan 1 44 19 156M 36940K select 178:06 0.00% operapluginwrapper
978 tsgan 1 44 0 212M 173M select 103:26 0.00% opera
954 tsgan 1 44 0 35236K 18372K select 11:59 0.00% wnck-applet
975 tsgan 7 44 0 198M 159M ucond 8:53 0.00% thunderbird-bin
922 tsgan 1 44 0 4808K 1460K select 4:43 0.00% gam_server
956 tsgan 1 44 0 35324K 16328K select 4:36 0.00% mixer_applet2
962 tsgan 1 44 0 13736K 5936K select 1:57 0.00% gnome-screensaver
1224 tsgan 1 44 0 70232K 28900K select 1:33 0.00% pidgin
1591 tsgan 1 44 19 5520K 772K select 1:17 0.00% operapluginwrapper
772 root 1 44 0 4496K 928K select 1:03 0.00% hald-addon-storage
930 tsgan 1 44 0 16204K 8744K select 0:48 0.00% metacity
441 root 1 44 0 3276K 592K select 0:45 0.00% moused
765 haldaemon 1 44 0 6164K 2252K select 0:41 0.00% hald
...
Is it due to SCHED_ULE makes a process CPU greedy and that is why my computer becomes slow?
Or it is something else? What SCHED_ULE sysctl knobs should I test here?
As I recall correctly I have never experienced such problems until recently.
Maybe I'm wrong here.
thanks,
Ganbold
--
X windows: Accept any substitute. If it's broke, don't fix it. If it ain't broke, fix it. Form follows malfunction. The Cutting Edge of Obsolescence. The trailing edge of software technology. Armageddon never looked so good. Japan's secret weapon. You'll envy the dead. Making the world safe for competing window systems. Let it get in YOUR way. The problem for your problem. If it starts working, we'll fix it. Pronto. It could be worse, but it'll take time. Simplicity made complex. The greatest productivity aid since typhoid. Flakey and built to stay that way. One thousand monkeys. One thousand MicroVAXes. One thousand years. X windows.
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