From: Rick Jones <rick.jones2@hp.com>
To: Michael Iatrou <m.iatrou@freemail.gr>
Cc: netdev@oss.sgi.com
Subject: Re: e1000 (?) jumbo frames performance issue
Date: Fri, 06 May 2005 09:18:59 -0700 [thread overview]
Message-ID: <427B98F3.1020003@hp.com> (raw)
In-Reply-To: <200505060055.55778.m.iatrou@freemail.gr>
>
>>It might be good to add CPU utilization figures - for 2.3pl1 that means
>>editing the makefile to add a -DUSE_PROC_STAT and recompiling. Or you can
>>grab netperf 2.4.0-rc3 from:
>>
>>ftp://ftp.cup.hp.com/dist/networking/benchmarks/netperf/experimental/
>>
>>if you cannot find it elsewhere, and that will (try to) compile-in the
>>right CPU utilization mechanism automagically.
>
>
> I already did a custom CPU usage instrumentation (based on infos
> from /proc/stat -- the latest netperf does the same thing, doesn't it?) and
> it seems that system has plenty of idle time (up to 50% if I recall correct)
IIRC you stated that the boxes were UP?
If changing netperf settings didn't affect much, then kernel profiles and/or
packet traces may be in order.
rick
prev parent reply other threads:[~2005-05-06 16:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-05 16:28 e1000 (?) jumbo frames performance issue Michael Iatrou
2005-05-05 20:17 ` Rick Jones
2005-05-05 21:33 ` David S. Miller
2005-05-05 21:54 ` Rick Jones
2005-05-05 22:17 ` David S. Miller
2005-05-05 23:24 ` Rick Jones
2005-05-05 21:55 ` Michael Iatrou
2005-05-05 22:26 ` Michael Iatrou
2005-05-06 16:18 ` Rick Jones [this message]
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