| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> |
| Cc: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Masahiko Sawada <masahiko(dot)sawada(at)2ndquadrant(dot)com>, "tsunakawa(dot)takay(at)fujitsu(dot)com" <tsunakawa(dot)takay(at)fujitsu(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: SLRU statistics |
| Date: | 2020-05-13 16:55:50 |
| Message-ID: | 7838.1589388950@sss.pgh.pa.us |
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Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com> writes:
> But since the counter that postmaster incremented is propagated to
> child processes via fork, it should be zeroed at postmaster or the
> beginning of child process? Otherwise that counter always starts
> with non-zero in child process.
Yes, if the postmaster is incrementing these counts then we would
have to reset them at the start of each child process. I share
Alvaro's feeling that that's bad and we don't want to do it.
>> (IIRC only the Async module is doing that.)
Hm, maybe we can fix that.
regards, tom lane
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