Re: [PATCH 2.4.20-aa1] Readlatency-2

[Con Kolivas <conman@kolivas.net>]

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>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?

This seems to be more of a disagreement with -aa1 and -rl2 than -rl2 per se.
Just FYI here's a copy of the SMP results that were in the other thread 
entitled "[PATCH] 2.4.20-rmap15a": 

io_load:
Kernel [runs]           Time    CPU%    Loads   LCPU%   Ratio
2.4.19 [5]              162.3   45      28      19      4.48
2.4.20 [5]              164.9   45      31      21      4.55
2.4.20-rl2 [3]          101.8   76      19      22      2.81

io_other:
Kernel [runs]           Time    CPU%    Loads   LCPU%   Ratio
2.4.19 [5]              62.3    117     11      20      1.72
2.4.20 [5]              89.6    86      17      21      2.47
2.4.20-rl2 [3]          51.8    142     10      21      1.43

Con
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