| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Jim C(dot) Nasby" <jim(at)nasby(dot)net> |
| Cc: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Load distributed checkpoint |
| Date: | 2006-12-29 21:43:24 |
| Message-ID: | 17799.1167428604@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers pgsql-patches |
"Jim C. Nasby" <jim(at)nasby(dot)net> writes:
> I believe there's something similar for OS X as well. The question is:
> would it be better to do that, or to just delay calling fsync until the
> OS has had a chance to write things out.
A delay is not going to help unless you can suppress additional writes
to the file, which I don't think you can unless there's very little
going on in the database --- dirty buffers have to get written to make
room for other pages, checkpoint in progress or no.
regards, tom lane
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2006-12-29 21:44:39 | Re: [HACKERS] Recent SIGSEGV failures in buildfarm HEAD |
| Previous Message | Tom Lane | 2006-12-29 21:41:11 | Re: Dead Space Map for vacuum |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Tom Lane | 2006-12-29 21:44:39 | Re: [HACKERS] Recent SIGSEGV failures in buildfarm HEAD |
| Previous Message | Andrew Dunstan | 2006-12-29 21:20:51 | Re: [HACKERS] Recent SIGSEGV failures in buildfarm HEAD |