| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
| Cc: | Mark Woodward <pgsql(at)mohawksoft(dot)com>, "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>, Zdenek Kotala <zdenek(dot)kotala(at)sun(dot)com>, Koichi Suzuki <suzuki(dot)koichi(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: How to avoid transaction ID wrap |
| Date: | 2006-06-08 15:43:48 |
| Message-ID: | 28061.1149781428@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
"Joshua D. Drake" <jd(at)commandprompt(dot)com> writes:
> I was recently involved in a project where we had to decrease the
> checkpoint_timeout . The problem was, that the database was performing
> so many transactions that if we waiting for 5 minutes, checkpoint would
> take entirely too long.
Seems like the correct fix for that is to make the bgwriter more
aggressive. Narrowing the checkpoint spacing is a pretty horrid answer
because of the resulting increase in full-page-image WAL traffic.
regards, tom lane
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