Hi!
I have a dual Celeron machine with 192 MB memory.
I thought I run bonnie just for fun: its default
100 MB file size fits entirely in memory so it measured
mostly vm performance. Here is the result:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
100 6328 100.0 50524 64.1 23615 30.4 6741 99.9 257090 97.9 31682.4 198.0
What shocked me is that block writing is more than twice as fast
as rewriting. Why is that? And why is block reading five times
as fast as block writing? Kernel version is 2.3.99-pre7-8.
Regards,
Zoltan Boszormenyi <zboszor@mail.externet.hu>
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