Hi everyone,
I'm trying to optimize a box for samba file serving (just contiguous block
I/O for the moment), and I've now got both CPUs maxxed out with system
load.
(For background info, the system is a 2x933 Intel, 1gb system memory,
133mhz FSB, 1gbit 64bit/66mhz FC card, 2x 1gbit 64/66 etherexpress boards
in etherchannel bond, running linux-2.4.1+smptimers+zero-copy+lowlatency)
CPU states typically look something like this:
CPU states: 3.6% user, 94.5% system, 0.0% nice, 1.9% idle
.. with the 3 smbd processes each drawing around 50-75% (according to
top).
When reading the profiler results, the largest consuming kernel (calls?)
are file_read_actor and csum_partial_copy_generic, by a longshot (about
70% and 20% respectively).
Presumably, the csum_partial_copy_generic should be eliminated (or at
least reduced) by David Miller's zerocopy patch, right? Or am I
misunderstanding this completely? :)
Regards,
- Gord R. Lamb ([EMAIL PROTECTED])
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
