| From: | Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, maxim(dot)boguk(at)gmail(dot)com, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: [BUGS] BUG #10123: Weird entries in pg_stat_activity |
| Date: | 2024-10-16 16:59:10 |
| Message-ID: | d7a858f9-404f-4535-8160-3222e43cf8c5@oss.nttdata.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-bugs |
On 2024/07/05 7:03, Andres Freund wrote:
> Calls to pgstat_report_activity() aren't exactly free. This substantially
> increases the number of calls to it for common workloads. There got to be a
> more targeted way of dealing with this.
Yes. So, as an alternative approach, how about setting xact_start and
query_start to NULL whenever the state is idle, since non-NULL values
aren't expected in that case? This would prevent the weired pg_stat_activity
entries I mentioned earlier, with minimal performance impact.
Regards,
--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Ba Jinsheng | 2024-10-16 18:26:12 | Re: Performance Issue on Query 18 of TPC-H Benchmark |
| Previous Message | Alena Rybakina | 2024-10-16 16:42:52 | Re: Performance Issue on Query 18 of TPC-H Benchmark |