| From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
|---|---|
| To: | Dan Langille <dan(at)langille(dot)org> |
| Cc: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: wal_sync_methods for AIX |
| Date: | 2008-02-15 22:04:53 |
| Message-ID: | 20080215140453.4fafd9b1@commandprompt.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
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On Fri, 15 Feb 2008 16:55:45 -0500
Dan Langille <dan(at)langille(dot)org> wrote:
> Our tests have been on a p550 connected to DS6800 array using pgbench.
>
> One nasty behaviour we have seen is long running commits. Initial
> thoughts connected
> them with checkpoints, but the long running commits do not correlate
> with checkpoints being
> written. Have you seen this behaviour?
Are you sure? What makes you think this? Do you have a high level of
shared buffers? What are your bgwriter settings?
Joshua D. Drake
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