All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Avery Fay <avery_fay@symantec.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Gigabit/SMP performance problem
Date: Mon, 06 Jan 2003 13:23:23 -0800	[thread overview]
Message-ID: <35670000.1041888203@flay> (raw)
In-Reply-To: <OF56E8EAC6.7DEBE879-ON85256CA6.007042A6-85256CA6.0070AD35@symantec.com>

> Well, judging by the fact that a UP kernel can route more traffic (and 
> consequently more interrupts p/s) than an SMP kernel, I think that one cpu 

Umm ... what are you comparing here? How many CPUs on your SMP kernel?
If I have an 8 CPU machine, you think it can handle less traffic than
a 1-cpu machine running a UP kernel?

> can probably handle all of the interrupts. Really the issue I'm trying to 
> solve is not routing performance, but rather the fact that SMP routing 
> performance is worse while using twice the cpu time (2 cpu's at around 95% 
> vs. 1 at around 95%).

Can you mail out kernel profiles? What's burning all the time here?

Thanks,

M.


  reply	other threads:[~2003-01-06 21:23 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-06 20:29 Gigabit/SMP performance problem Avery Fay
2003-01-06 21:23 ` Martin J. Bligh [this message]
2003-01-07 17:19   ` Mike Black
  -- strict thread matches above, loose matches on Subject: below --
2003-01-08 21:44 Ronciak, John
2003-01-09 12:49 ` Robert Olsson
2003-01-08 21:12 Feldman, Scott
2003-01-08 12:17 Jon Burgess
2003-01-06 20:38 Avery Fay
2003-01-07 18:15 ` Robert Olsson
2003-01-06 20:33 Avery Fay
2003-01-06 20:25 Avery Fay
     [not found] <b8ce5e32.0301040439.7bdaa903@posting.google.com>
2003-01-06 18:27 ` Bill Davidsen
2003-01-06 19:09   ` Daniel Blueman
2003-01-06 19:26     ` Brian Tinsley
2003-01-03 20:25 Avery Fay
2003-01-03 21:19 ` Arjan van de Ven
2003-01-03 21:36 ` Martin J. Bligh
2003-01-03 22:31   ` Andrew Theurer
2003-01-03 16:12 Avery Fay
2003-01-03 18:05 ` Martin J. Bligh
2003-01-03 21:49   ` Ron cooper
2003-01-03 21:47     ` Martin J. Bligh
2003-01-03 21:20 ` Robert Olsson
2003-01-04  3:33 ` Anton Blanchard
2003-01-06 19:43 ` Jon Fraser

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=35670000.1041888203@flay \
    --to=mbligh@aracnet.com \
    --cc=avery_fay@symantec.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.