On Tue, Oct 27, 2009 at 02:00:52PM -0400, Jim Mauro wrote:
> I've run into this from time to time.
>
> Simple example;
>
> #dtrace -n 'hotspot27563::: { @[probename]=count(); } tick-1sec {
> printa(@); clear(@); }'
>
> The sample output (below) shows a couple functions (probename)
> with a value of zero. By virtue of the fact that it appears in the
> aggregation at all implies that minimal value should be 1 (I would think).
Clear clears all values in the aggregation to 0; to remove all elements from
the aggregation, you want trunc(@a).
(clear() can be useful if you want a running list of everything seen, but
count only for the most recent hits)
Cheers,
- jonathan
> (FYI - this is on OSOL 2009.06, x86 system).
>
> Thanks,
> /jim
>
>
> gc-begin 0
> gc-end 0
> mem-pool-gc-begin 0
> mem-pool-gc-end 0
> thread-start 3
> thread-stop 3
>
> gc-begin 0
> gc-end 0
> mem-pool-gc-begin 0
> mem-pool-gc-end 0
> thread-start 4
> thread-stop 4
>
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss@opensolaris.org
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