Re: [patch] scheduler cache affinity improvement in 2.4 kernels by Ingo Molnar

["Shailabh Nagar" <nagar@us.ibm.com>]

Hi Partha,

Sorry to see the "shoot-the-messenger" replies to your posting. I've yet to
understand why lmbench is relevant
in an SMP setting.....

Shailabh Nagar
Enterprise Linux Group, IBM TJ Watson Research Center
(914) 945 2851, T/L 862 2851


Partha Narayanan/Austin/IBM@IBMUS@vger.kernel.org on 11/17/2001 11:58:05 AM

Sent by:  linux-kernel-owner@vger.kernel.org


To:   linux-kernel@vger.kernel.org
cc:
Subject:  [patch] scheduler cache affinity improvement in 2.4 kernels by
      Ingo Molnar



Folks,


The above patch for scheduler cache affinity improvement in 2.4 kernels by
Ingo Molnar was applied to 2.4.14 kernel;
a run of Volano LoopBack BenchMark on a Netfinity 8500 R 1MB 700 MHz PIII
1MB-L2 cache and 1GB memory support produced
the following results:

     The UniProcessor throughput  was reduced by 40%.
     The 4-way throughput showed a very slight degradation of 1%.
     The 8-way throughput showed an improvemnet of 10%.


I do not subscribe to lkml and hence please address any future
correspondence on this topic to partha@us.ibm.,com.

Thanks,
Partha


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