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SubjectRe: [BENCHMARK] 2.4.{18,19{-ck9},20rc1{-aa1}} with contest
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>Con Kolivas wrote:
>> io_load:
>> Kernel [runs] Time CPU% Loads LCPU% Ratio
>> 2.4.18 [3] 474.1 15 36 10 6.64
>> 2.4.19 [3] 492.6 14 38 10 6.90
>> 2.4.19-ck9 [2] 140.6 49 5 5 1.97
>> 2.4.20-rc1 [2] 1142.2 6 90 10 16.00
>> 2.4.20-rc1aa1 [1] 1132.5 6 90 10 15.86
>
>2.4.20-pre3 included some elevator changes. I assume they are the
>cause of this. Those changes have propagated into Alan's and Andrea's
>kernels. Hence they have significantly impacted the responsiveness
>of all mainstream 2.4 kernels under heavy writes.
>
>(The -ck patch includes rmap14b which includes the read-latency2 thing)

Thanks for the explanation. I should have said this was ck with compressed
caching; not rmap.

Con.
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