| From: | Andrew - Supernews <andrew+nonews(at)supernews(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Autovacuum to-do list |
| Date: | 2005-08-01 22:34:21 |
| Message-ID: | slrndet8rd.bj3.andrew+nonews@trinity.supernews.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2005-08-01, "Matthew T. O'Connor" <matthew(at)zeut(dot)net> wrote:
>>* Stop a running VACUUM if the system load is too high.
>
> What if vacuum used a vacuum delay that was equal to the vacuum delay
> GUC settings * the system load. Or something more sophisticated but
> this would have the effect of having vacuum automatically throttle down
> when the system gets busy and throttle back up when the system gets
> quiet. We would probably set some min / max values but it sounds
> interesting, thoughts?
I'd be very concerned about feedback loop stability; insufficient
vacuuming can increase the system load, causing vacuum to get further
behind...
--
Andrew, Supernews
http://www.supernews.com - individual and corporate NNTP services
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Matthew T. O'Connor | 2005-08-02 02:22:14 | Re: Autovacuum to-do list |
| Previous Message | Matthew T. O'Connor | 2005-08-01 21:15:33 | Re: Autovacuum to-do list |