Re: [PATCH 2.4.20-aa1] Readlatency-2

Andrew Morton
2002-12-06T11:29:11Z

Con Kolivas wrote:
>
> io_load:
> Kernel [runs] Time CPU% Loads LCPU% Ratio
> 2.4.20 [5] 203.4 33 40 15 3.07
> 2.4.20aa1 [3] 238.3 27 46 15 3.60
> 2.4.20aa1rl2 [3] 302.5 22 63 16 4.57

Something must have gone wrong here. rl2 cannot be worse than
2.4.20 in this test.

Umm, quick sanity check:

2.4.20-rl2 321.44 147% 96 24%
2.4.20 361.70 130% 108 24%

So only a 10% speedup, but certainly not a 50% slowdown. (That is
on scsi).

Maybe a patch preparation problem?