| From: | "Bossart, Nathan" <bossartn(at)amazon(dot)com> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| 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: | 2021-09-17 16:31:44 |
| Message-ID: | B0511107-6ACD-4002-9E7E-CFB38621836E@amazon.com |
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| Lists: | pgsql-admin pgsql-hackers |
On 9/16/21, 7:21 PM, "Michael Paquier" <michael(at)paquier(dot)xyz> wrote:
> + GetHugePageSize(&hp_size, &unused);
> + if (hp_size != 0)
> I'd rather change GetHugePageSize() to be able to accept NULL for the
> parameter values, rather than declaring such variables.
Done.
> + To determine the number of huge pages needed, use the
> + <command>postgres</command> command to see the value of
> + <xref linkend="guc-shared-memory-size-in-huge-pages"/>.
> We may want to say as well here that the server should be offline?
> It would not hurt to duplicate this information with
> postgres-ref.sgml.
Done.
> + This setting is supported only on Linux. It is always set to
> Nit: This paragraph is missing two <productname>s for Linux. The docs
> are random about that, but these are new entries.
Done.
Nathan
| Attachment | Content-Type | Size |
|---|---|---|
| v13-0001-Introduce-shared_memory_size_in_huge_pages-GUC.patch | application/octet-stream | 10.5 KB |
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