| From: | Michael Paquier <michael(at)paquier(dot)xyz> |
|---|---|
| To: | "Bossart, Nathan" <bossartn(at)amazon(dot)com> |
| Cc: | Justin Pryzby <pryzby(at)telsasoft(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, "tgl(at)sss(dot)pgh(dot)pa(dot)us" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "robertmhaas(at)gmail(dot)com" <robertmhaas(at)gmail(dot)com>, "masao(dot)fujii(at)oss(dot)nttdata(dot)com" <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, "andres(at)anarazel(dot)de" <andres(at)anarazel(dot)de>, "magnus(at)hagander(dot)net" <magnus(at)hagander(dot)net>, "mark(dot)dilger(at)enterprisedb(dot)com" <mark(dot)dilger(at)enterprisedb(dot)com>, "don(at)seiler(dot)us" <don(at)seiler(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Estimating HugePages Requirements? |
| Date: | 2021-09-22 03:53:26 |
| Message-ID: | YUqotqEyNQT0GxMc@paquier.xyz |
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| Lists: | pgsql-admin pgsql-hackers |
On Tue, Sep 21, 2021 at 04:06:38PM +0000, Bossart, Nathan wrote:
> I was looking at this from the standpoint of keeping the startup steps
> consistent between the modes. Looking again, I can't think of
> a strong reason to add it to bootstrap mode. I think the case for
> adding it to single-user mode is a bit stronger, as commands like
> "SHOW shared_memory_size;" currently return 0. I lean in favor of
> adding it for single-user mode, but it's probably fine either way.
I am not sure either as that's a tradeoff between an underestimation
and no information. The argument of consistency indeed matters.
Let's see if others have any opinion to share on this point.
--
Michael
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