| From: | Joe Conway <mail(at)joeconway(dot)com> |
|---|---|
| To: | "Matthew T(dot) O'Connor" <matthew(at)zeut(dot)net> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-performance <pgsql-performance(at)postgresql(dot)org>, Josh Berkus <josh(at)agliodbs(dot)com> |
| Subject: | Re: rapid degradation after postmaster restart |
| Date: | 2004-03-17 05:18:27 |
| Message-ID: | 4057DFA3.90407@joeconway.com |
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| Lists: | pgsql-hackers pgsql-performance |
Matthew T. O'Connor wrote:
> If memory serves, the problem is that you actually sleep 10ms even when
> you set it to 1. One of the thing changed in Jan's later patch was the
> ability to specify how many pages to work on before sleeping, rather
> than how long to sleep inbetween every 1 page. You might be able to do
> a quick hack and have it do 10 pages or so before sleeping.
I thought I remembered something about that.
It turned out to be less difficult than I first thought to extract the
vacuum delay stuff from Jan's performance patch. I haven't yet tried it
out, but it's attached in case you are interested. I'll report back once
I have some results.
Joe
| Attachment | Content-Type | Size |
|---|---|---|
| performance_mod.74.diff | text/plain | 4.9 KB |
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