Date: Sat, 1 Jun 2013 12:25:59 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Kostas Oikonomou" <k.oikonomou@att.net>, "John Baldwin" <jhb@freebsd.org> Cc: freebsd-amd64@freebsd.org Subject: Re: idle process keeping cpu 150% busy in freebsd 9.1-amd64 Message-ID: <A2DC71BD50EE46AEBCD36D670644C2A2@multiplay.co.uk> References: <51A7B693.8050705@att.net> <201305311127.13846.jhb@freebsd.org> <51A8D208.2040702@att.net> <201305311452.04674.jhb@freebsd.org> <51A90CBE.4020508@att.net>
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----- Original Message -----
From: "Kostas Oikonomou" <k.oikonomou@att.net>
To: "John Baldwin" <jhb@freebsd.org>
Cc: <freebsd-amd64@freebsd.org>
Sent: Friday, May 31, 2013 9:49 PM
Subject: Re: idle process keeping cpu 150% busy in freebsd 9.1-amd64
> The core will always look like it is "running" in top, even when it is asleep. That is just how FreeBSD accounts for idle CPU
> time. The only thing I was hoping would change is the fan having to run. You can try kldload'ing coretemp and seeing if the
> processor temperatures are different when deeper CX states are enabled (or when powerd is running) to see if it is having any
> affect on the temperatures in your box.
>
> First the good news. It looks like the problem is solved on the laptop (Core i7). It took one more reboot after I put
> "performance_cx_lowest=LOW" in /etc/rc.conf.
>
> However, the problem is still there on the HP desktop (AMD 7550). This has only
> Cx state, C1, so "performance_cx_lowest=LOW" had no effect.
>
> The symptoms with this machine are that top does not show anything running besides idle, and neither does ps -aux. Yet the
> Gnome System monitor applet that I have on the bottom panel shows significant cpu activity.
> And the fan starts running within 5 minutes after the system finishes booting.
>
> Here is what top -S -H says:
>
>
> last pid: 2645; load averages: 1.14, 0.78, 0.34 up 0+00:02:17 19:31:35
> 356 processes: 3 running, 338 sleeping, 15 waiting
> CPU: 0.2% user, 0.0% nice, 18.9% system, 0.0% interrupt, 80.9% idle
> Mem: 187M Active, 36M Inact, 354M Wired, 13M Cache, 3323M Free
> Swap: 2048M Total, 2048M Free
>
> PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
> 11 root 155 ki31 0K 32K CPU0 0 1:45 89.99% idle{idle: cpu0}
> 11 root 155 ki31 0K 32K RUN 1 1:40 83.98% idle{idle: cpu1}
> 0 root -16 0 0K 2672K sched 0 1:03 0.00% kernel{swapper}
> 462 root -21 r31 912M 33216K select 0 0:10 0.00% Xorg
> 1968 ko 52 0 209M 7144K select 0 0:04 0.00% pulseaudio{pulseaudio}
> 1968 ko 52 0 209M 7144K select 1 0:03 0.00% pulseaudio{pulseaudio}
> 7 root -16 - 0K 16K ccb_sc 0 0:02 0.00% xpt_thrd
> 12 root -84 - 0K 240K WAIT 1 0:01 0.00% intr{irq1: atkbd0}
> 12 root -60 - 0K 240K WAIT 0 0:01 0.00% intr{swi4: clock}
> 1969 ko 20 0 323M 21968K select 0 0:00 0.00% gnome-panel{gnome-panel}
> 12 root -96 - 0K 240K WAIT 1 0:00 0.00% intr{irq16: vgapci0+}
> 2196 ko 20 0 294M 18052K select 0 0:00 0.00% gnome-netstatus-app{gnome-
> 1811 ko 20 0 320M 19116K select 1 0:00 0.00% gnome-settings-daem{gnome-
> 15 root -68 - 0K 128K - 1 0:00 0.00% usb{usbus0}
> 2200 ko 20 0 360M 21808K select 1 0:00 0.00% clock-applet{clock-applet}
> 1458 root 30 10 10376K 3448K select 0 0:00 0.00% devd
> 2028 ko 20 0 218M 25652K select 0 0:00 0.00% python
> 2272 ko 20 0 280M 20044K select 1 0:00 0.00% gnome-terminal{gnome-termi
> 2198 ko 20 0 295M 20552K select 1 0:00 0.00% stickynotes_applet{stickyn
> 1405 ko 20 0 156M 13152K select 0 0:00 0.00% gnome-session{gnome-sessio
> 417 haldaemon 20 0 56952K 6136K select 0 0:00 0.00% hald{hald}
Assuming this is a dual core machine, your missing ~25% of your overall
CPU time, identifying where this is might help.
Does the following give any hints to this: top -S -H -I -C -s1
Regards
Steve
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