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 <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Ancient Roman grave inscription +
