On Tue, Nov 6, 2018 at 04:26:03AM +0000, Yotsunaga, Naoki wrote:
> On Sat, Nov 3, 2018 at 1:28 AM, Phil Florent wrote:
>
>
>
> >2) it consumes system resources
>
> While the system is running, you are always sampling system information, do not
> you? Like Oracle ASH.
>
> If so, does sampling have no significant impact on performance? Even if the
> interval is 0.01 s or more.
I am replying late, but one of the reasons that sampling is used is that
decreasing the sampling interval increases to overhead of the sampling
process, but doesn't affect the running backends.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
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