[linux-lvm] Performance problem.

Michael Paesold mpaesold at gmx.at
Mon Nov 17 14:01:02 UTC 2003

neuron wrote:

> elvtune shows read_latency of 2048 and write_latency of 8192,
> that's already quite low isn't it?  If not, have any example
> values I can test with?

Those are the default values for RedHat 8.0, and probably some other
systems. For RedHat 9.0 the defaults are:

/dev/cciss/c0d0 elevator ID             2
        read_latency:           64
        write_latency:          8192
        max_bomb_segments:      6

You could try 64 or even 32 and do your "real-world test" (listening to

Michael Paesold

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