memory performance puzzle

From: Jim McDonald (jmcdon23@CSC.COM.AU)
Date: Mon Apr 14 2003 - 03:48:05 EDT


Hi

Using lmbench to do some system benchmarking.

We came across something that was a bit odd in the preliminary results:
- AIX 4.3.3 the raw memory read and writes take approximately the same.
- AIX 5.1 the memory writes take substantially longer than the memory
reads.

Anybody have any thoughts on this or used lmbench to get the similar
results

Regards
Jim McDonald

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