On Mon, 5 Nov 2007, Josh Carroll wrote:
Turns out the last patch I posted had a small compile error because I
edited it by hand to remove one section. Here's an updated patch that
fixes that and changes the min/max slice values to something more
reasonable. Slice min should be around 4 with a max of 12.
Also looks like 4BSD's slice handling got more precise recently as well.
jhb changed it from using a callout to an actual counter based on runtime.
ffmpeg runtime with the new patch: 1:39.09
buildworld: 13:55.689
Looks like things got a little worse with this patch. One thing of
note, the slice_min and slice values are:
kern.sched.slice_min: 5
kern.sched.slice: 13
That's expected due to the fuzzy rounding of 128 / 10, etc. Can you set
slice_min and slice both equal to 7 and see if the numbers come out
better than without the patch but with a slice value of 7? Basically I'm
trying to isolate the effects of the different slice handling in this
patch from the other changes.
Thanks,
Jeff
Did I do something wrong to cause the slice min to be 5 instead of 4
and the max to be 13 instead of 12?
Thanks,
Josh
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