On 2005-08-01, "Matthew T. O'Connor" <matthew@zeut.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...

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Andrew, Supernews
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