Yedidyah Bar-David wrote:
On Thu, Sep 29, 2005 at 11:37:34AM +0300, Boris Zingerman wrote:
Hi list
I'm runnig XP SP2 under vmware-5 on my linux
box ( RH9 kernel 2.4.28 ) and I see that vmware-wx
constantly uses 15-20% of CPU even when no application
is open in XP. But what is more interesting is that top always
reports this process (vmware-wx) as sleeping. How sleeping
process can constantly waste CPU? If it is just an artifact of
sampling that is done by top then statistically I should sometimes
see it in running state.
Did you try to strace it? Did you try 'top -i -d 0'?
Well I straced it and it seems that it performs
polling (with timeout 10msec ) on a bunch of
file descriptors which are these
lr-x------ 1 root root 64 Sep 29 15:16 106 -> pipe:[86868]
lr-x------ 1 root root 64 Sep 29 15:16 132 ->
/proc/bus/usb/devices
lrwx------ 1 root root 64 Sep 29 15:16 140 ->
socket:[87088]
lrwx------ 1 root root 64 Sep 29 15:16 24 -> /dev/vmmon
lrwx------ 1 root root 64 Sep 29 15:16 25 -> /dev/vmmon
lr-x------ 1 root root 64 Sep 29 15:16 26 -> pipe:[87112]
lr-x------ 1 root root 64 Sep 29 15:16 29 ->
pipe:[16717883]
lrwx------ 1 root root 64 Sep 29 15:16 31 -> socket:[86797]
lr-x------ 1 root root 64 Sep 29 15:16 5 -> pipe:[86777]
and file descriptor that allways returns POLLIN in revents is
25 -> /dev/vmmon , go figure out what's going on :-)
By the way this process doesn't show in top -i - d 0.2 because
it always seems to have sleeping status. Isn't it weird ?
(below is the line from regular top invocation)
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
28920 boris-z 10 -10 506M 505M 496M S < 22.5 25.2 72:29 0 vmware-vmx
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