| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Guy Thornley <guy(at)esphion(dot)com>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: Vacuum I/O throttling |
| Date: | 2003-09-01 16:45:29 |
| Message-ID: | 200309011645.h81GjTr15759@candle.pha.pa.us |
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| Lists: | pgsql-bugs |
Tom Lane wrote:
> Guy Thornley <guy(at)esphion(dot)com> writes:
> > Below is a patch for the lazy vacuum. It implements a simple I/O throttle so
> > boxen arnt killed for hours a day when VACUUM runs.
>
> Wasn't this idea tried and rejected already? You haven't given us any
> information about actual performance.
What would be more valuable would be if VACUUM ran only when it know it
could reap a certain number of tuples, or there where FSM need for those
tuples.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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