Hey Vish,
Do you have a single CPU core?
Adam
On May 4, 2010, at 4:47 PM, vhiz wrote:
> Hi All,
>
> I used the following script from the dtrace manual to measure how long a
> particular process runs on the cpu. Modified it to look at the exact
> timestamps:
> [i]
> sched:::on-cpu
> {
> self->ts = timestamp;
> printf("on=%d\n", self->ts)
> }
> sched:::off-cpu
> /self->ts/
> {
>
> printf("off=%d\n", timestamp)
> self->ts = 0;
> }
> [/i]
> The output looks like this:
> [i]on=24591
> off=24603
> on=24609
> on=24670
> off=24676[/i]
>
> This pattern of two 'on' timestamps between the 'off' timestamps repeats
> throughout. Should it not just have 1 'on', then 1 'off', and so on. Can
> someone please explain.
>
> Thanks,
> Vish
> --
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--
Adam Leventhal, Fishworks http://blogs.sun.com/ahl
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