| From: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
|---|---|
| To: | "REIX, Tony" <tony(dot)reix(at)atos(dot)net> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, "EMPEREUR-MOT, SYLVIE" <sylvie(dot)empereur-mot(at)atos(dot)net> |
| Subject: | Re: Shared Memory: How to use SYSV rather than MMAP ? |
| Date: | 2019-02-07 04:44:15 |
| Message-ID: | CAEepm=1KGdzguVeypVLcLjR+4WpKQvYtaXOiNG8tpez3qkqHDQ@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Sun, Feb 3, 2019 at 10:56 PM Thomas Munro
<thomas(dot)munro(at)enterprisedb(dot)com> wrote:
> Committed 0001.
> I've moved the CF entry to the next Commitfest, since we still have to
> fix up and commit the 0002 patch for AIX.
For the record, one problem with the shared_memory_type=sysv patch as
committed is that if you set huge_pages=on on Linux, it is allowed but
ignored. I think we should respect it by passing SHM_HUGETLB to
shmget(), which, although not especially interesting as a feature
(given that there is no good reason for Linux users to prefer System V
shared memory anyway), it has the advantage that the code path would
be nearly identical to the proposed AIX huge page support (just a
different flag name), which is useful for development and testing (by
those of us with no AIX access). Then the AIX support will be a very
tiny patch on top of that, which Tony can verify.
--
Thomas Munro
http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2019-02-07 05:14:58 | Re: Fixing findDependentObjects()'s dependency on scan order (regressions in DROP diagnostic messages) |
| Previous Message | Michael Paquier | 2019-02-07 04:43:17 | Re: Add pg_partition_root to get top-most parent of a partition tree |