Re: WimMark I report for 2.5.70-mm1

[Andrew Morton (akpm@digeo.com)]

Joel Becker <Joel.Becker@xxxxxxxxxx> wrote:
>
> WimMark I report for 2.5.70
>
> Runs:  1005.78 958.80 947.23
>
> WimMark I report for 2.5.70-mm1
> 
> Runs (deadline): 717.27 1064.57 1089.13
> Runs (anticipatory):  1342.93 1121.47 1330.42
> ...
> 	WimMark I run results are archived at
> http://oss.oracle.com/~jlbec/wimmark/wimmark_I.html

This is nuts.  WimMark keeps on showing 2:1 swings in throughput when no
other test shows any variation at all.  I simply do not know what to make
of it.

Your results would appear to indicate that the regression between
2.5.69-mm5 and 2.5.69-mm8 was actually due to something in Linus's tree,
and it is now in 2.5.70.

I have an interdiff here between the linus.patch from mm5 and mm8 and it
contains nothing very interesting.

It's at http://www.zip.com.au/~akpm/linux/patches/stuff/wimmark-interdiff.txt

The actual diff is at
http://www.zip.com.au/~akpm/linux/patches/stuff/wimmark-interdiff.patch.gz

There is the bio split stuff in ll_rw_blk.c, but that shouldn't matter.

Which device driver are you using?
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