Re: [PATCH] vhand-2.1.63
Rik van Riel (H.H.vanRiel@fys.ruu.nl)
Mon, 17 Nov 1997 11:45:23 +0100 (MET)
On Sat, 15 Nov 1997, Joe Fouche wrote:
>
> It looks to me like the code in kswapd to wake vhand up is being called too
> often. After commenting out the following in vmscan.c (swap_tick):
>
> /*
> if (jiffies > next_scan_jiffies) {
> if (!vhand_awake) {
> wake_up(&vhand_wait);
> need_resched = 1;
> }
> }
> */
>
> vhand no longer uses an appreciable amount of CPU. Performance still seems
> improved. Comments?
Hmm, how about kswapd CPU usage...
Anyways, since performance went up, I think I'm going to try
this myself.
Or otherwise we could implement a less agressive tuning
method, a maximum delay of HZ/10, or whatever...
Time to tune the tuning,
Rik.
----------
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