From: "David S. Miller" <davem@davemloft.net>
To: Greg Banks <gnb@sgi.com>
Cc: hadi@cyberus.ca, akepner@sgi.com, jesse.brandeburg@intel.com,
netdev@oss.sgi.com
Subject: Re: NAPI, e100, and system performance problem
Date: Tue, 19 Apr 2005 11:36:57 -0700 [thread overview]
Message-ID: <20050419113657.7290d26e.davem@davemloft.net> (raw)
In-Reply-To: <20050419055535.GA12211@sgi.com>
On Tue, 19 Apr 2005 15:55:35 +1000
Greg Banks <gnb@sgi.com> wrote:
> > How do you recognize when system resources are being poorly utilized?
>
> An inordinate amount of CPU is being spent running around polling the
> device instead of dealing with the packets in IP, TCP and NFS land.
> By inordinate, we mean twice as much or more cpu% than a MIPS/Irix
> box with slower CPUs.
You haven't answered the "how" yet.
What tools did you run, what did those tools attempt to measure, and
what results did those tools output for you so that you could determine
your conclusions with such certainty?
next prev parent reply other threads:[~2005-04-19 18:36 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-18 6:11 NAPI, e100, and system performance problem Brandeburg, Jesse
2005-04-18 12:14 ` jamal
2005-04-18 15:36 ` Robert Olsson
2005-04-18 16:55 ` Arthur Kepner
2005-04-18 19:34 ` Robert Olsson
2005-04-18 20:26 ` jamal
2005-04-19 5:55 ` Greg Banks
2005-04-19 18:36 ` David S. Miller [this message]
2005-04-19 20:38 ` NAPI and CPU utilization [was: NAPI, e100, and system performance problem] Arthur Kepner
2005-04-19 20:52 ` Rick Jones
2005-04-19 21:09 ` David S. Miller
[not found] ` <20050420145629.GH19415@sgi.com>
2005-04-20 15:15 ` NAPI, e100, and system performance problem jamal
2005-04-22 11:36 ` Andi Kleen
2005-04-22 12:33 ` jamal
2005-04-22 17:21 ` Andi Kleen
2005-04-22 18:18 ` jamal
2005-04-22 18:30 ` Andi Kleen
2005-04-22 18:37 ` Arthur Kepner
2005-04-22 18:52 ` David S. Miller
[not found] ` <Pine.LNX.4.61.0504241845070.2934@linux.site>
2005-04-25 11:25 ` jamal
2005-04-25 18:51 ` David S. Miller
2005-04-25 11:41 ` jamal
2005-04-25 12:16 ` Jamal Hadi Salim
2005-04-22 19:01 ` jamal
2005-04-22 19:07 ` David S. Miller
2005-04-22 19:21 ` jamal
2005-04-23 20:50 ` Robert Olsson
2005-04-23 16:56 ` Robert Olsson
2005-04-22 23:28 ` Greg Banks
2005-04-22 23:40 ` Stephen Hemminger
2005-04-22 23:43 ` David S. Miller
2005-04-23 2:51 ` Stephen Hemminger
2005-04-23 17:54 ` Robert Olsson
2005-04-23 3:04 ` jamal
2005-04-23 17:14 ` Robert Olsson
2005-04-22 14:52 ` Robert Olsson
2005-04-22 15:37 ` jamal
2005-04-22 17:22 ` Andi Kleen
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