| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Justin Pryzby <pryzby(at)telsasoft(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Direct I/O |
| Date: | 2022-12-22 02:04:04 |
| Message-ID: | CA+hUKGLmeyrDcUYAty90V_YTcoo5kAFfQjRQ-_1joS_=X7HztA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Dec 14, 2022 at 5:48 PM Thomas Munro <thomas(dot)munro(at)gmail(dot)com> wrote:
> 0001 -- David's palloc_aligned() patch https://commitfest.postgresql.org/41/3999/
> 0002 -- I/O-align almost all buffers used for I/O
> 0003 -- Add the GUCs
> 0004 -- Throwaway hack to make cfbot turn the GUCs on
David pushed the first as commit 439f6175, so here is a rebase of the
rest. I also fixed a couple of thinkos in the handling of systems
where we don't know how to do direct I/O. In one place I had #ifdef
PG_O_DIRECT, but that's always defined, it's just that it's 0 on
Solaris and OpenBSD, and the check to reject the GUC wasn't quite
right on such systems.
| Attachment | Content-Type | Size |
|---|---|---|
| v3-0001-Introduce-PG_IO_ALIGN_SIZE-and-align-all-I-O-buff.patch | text/x-patch | 24.8 KB |
| v3-0002-Add-io_direct-setting-developer-only.patch | text/x-patch | 20.4 KB |
| v3-0003-XXX-turn-on-direct-I-O-by-default-just-for-CI.patch | text/x-patch | 749 bytes |
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