| From: | Sean Chittenden <sean(at)chittenden(dot)org> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Gaetano Mendola <mendola(at)bigfoot(dot)com>, pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: fsync or fdatasync |
| Date: | 2002-09-09 23:43:04 |
| Message-ID: | 20020909234304.GK26147@ninja1.internal |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-admin |
> > apparently the default value for wal_sync_method is fsync,
> > and apparently the best method is fdatasync.
>
> Best on what platform, and according to what evidence?
>
> We'll be glad to consider changing the default for a specific platform
> if we have a reasonably convincing argument that the other value is
> better. So far, not much study has been done of which method is best
> on which platforms (and under what load conditions).
heh, just a quick note: I had one of FreeBSD's kernel guru's point out
that fsync() on linux is a no-op. I haven't had that src tree in
years so I can't confirm, but I'm inclined to believe him. Just an
FYI. -sc
--
Sean Chittenden
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Ragnar Kjørstad | 2002-09-09 23:52:08 | Re: fsync or fdatasync |
| Previous Message | Tom Lane | 2002-09-09 20:42:52 | Re: fsync or fdatasync |