Re: Samba performance / zero-copy network I/O

Andrew Morton (andrewm@uow.edu.au)
Sat, 17 Feb 2001 01:51:14 +1100


Tom Sightler wrote:
>
> My testing showed that the lowlatency patches abosolutely destroy a system
> thoughput under heavy disk IO.

I'm surprised - I've been keeping an eye on that.

Here's the result of a bunch of back-to-back `dbench 12' runs
on UP, alternating with and without LL:

With:
58.725 total
52.217 total
51.935 total
53.624 total
39.815 total

Without:
1:16.85 total
52.525 total
57.602 total
41.623 total
58.848 total

Results on reiserfs are similar.

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