* measuring time spent in kernel
@ 2002-04-11 23:54 Torrey Hoffman
2002-04-11 23:22 ` Karim Yaghmour
2002-04-11 23:26 ` Andrew Morton
0 siblings, 2 replies; 3+ messages in thread
From: Torrey Hoffman @ 2002-04-11 23:54 UTC (permalink / raw)
To: Linux Kernel
"top" and similar tools don't seem to capture the time spent in kernel
which isn't on behalf of a user process.
I vaguely remember mention on this list of a tool that soaks up as many
cycles as it can get to obtain an accurate measurement of the true
system time.
Can some one give me a pointer? I've had no luck with Google...
thanks,
Torrey Hoffman
thoffman@arnor.net
torrey.hoffman@myrio.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: measuring time spent in kernel
2002-04-11 23:54 measuring time spent in kernel Torrey Hoffman
@ 2002-04-11 23:22 ` Karim Yaghmour
2002-04-11 23:26 ` Andrew Morton
1 sibling, 0 replies; 3+ messages in thread
From: Karim Yaghmour @ 2002-04-11 23:22 UTC (permalink / raw)
To: Torrey Hoffman; +Cc: Linux Kernel
You may want to try LTT:
http://www.opersys.com/LTT
It will give this sort of information, among many other things,
and it doesn't soak up any cycles.
Karim
Torrey Hoffman wrote:
>
> "top" and similar tools don't seem to capture the time spent in kernel
> which isn't on behalf of a user process.
>
> I vaguely remember mention on this list of a tool that soaks up as many
> cycles as it can get to obtain an accurate measurement of the true
> system time.
>
> Can some one give me a pointer? I've had no luck with Google...
>
> thanks,
>
> Torrey Hoffman
> thoffman@arnor.net
> torrey.hoffman@myrio.com
>
> -
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--
===================================================
Karim Yaghmour
karym@opersys.com
Embedded and Real-Time Linux Expert
===================================================
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: measuring time spent in kernel
2002-04-11 23:54 measuring time spent in kernel Torrey Hoffman
2002-04-11 23:22 ` Karim Yaghmour
@ 2002-04-11 23:26 ` Andrew Morton
1 sibling, 0 replies; 3+ messages in thread
From: Andrew Morton @ 2002-04-11 23:26 UTC (permalink / raw)
To: Torrey Hoffman; +Cc: Linux Kernel
Torrey Hoffman wrote:
>
> "top" and similar tools don't seem to capture the time spent in kernel
> which isn't on behalf of a user process.
>
> I vaguely remember mention on this list of a tool that soaks up as many
> cycles as it can get to obtain an accurate measurement of the true
> system time.
>
> Can some one give me a pointer? I've had no luck with Google...
http://www.google.com/keyword/keyword/%3Fcyclesoak :)
-
^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-04-11 23:54 measuring time spent in kernel Torrey Hoffman
2002-04-11 23:22 ` Karim Yaghmour
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