| From: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com> |
|---|---|
| To: | "Jim C(dot) Nasby" <jim(at)nasby(dot)net>, Galy Lee <lee(dot)galy(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-performance(at)postgresql(dot)org, Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: [HACKERS] how to plan for vacuum? |
| Date: | 2007-01-25 16:04:49 |
| Message-ID: | 45B8D521.8010405@commandprompt.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers pgsql-performance |
Alvaro Herrera wrote:
> Jim C. Nasby wrote:
>
>> I'll generally start with a cost delay of 20ms and adjust based on IO
>> utilization.
>
> I've been considering set a default autovacuum cost delay to 10ms; does
> this sound reasonable?
It really depends on the system. Most of our systems run anywhere from
10-25ms. I find that any more than that, Vacuum takes too long.
Joshua D. Drake
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