From: Rick Jones <raj@cup.hp.com>
To: jamal <hadi@cyberus.ca>
Cc: Ion Badulescu <ionut@cs.columbia.edu>,
Andrew Morton <andrewm@uow.edu.au>,
lkml <linux-kernel@vger.kernel.org>,
"netdev@oss.sgi.com" <netdev@oss.sgi.com>
Subject: Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing to dowith ECN)
Date: Tue, 30 Jan 2001 17:10:52 -0800 [thread overview]
Message-ID: <3A77661C.5D7FD4C@cup.hp.com> (raw)
In-Reply-To: <Pine.GSO.4.30.0101301944181.3017-100000@shell.cyberus.ca>
> ** I reported that there was also an oddity in throughput values,
> unfortunately since no one (other than me) seems to have access
> to a gige cards in the ZC list, nobody can confirm or disprove
> what i posted. Here again as a reminder:
>
> Kernel | tput | sender-CPU | receiver-CPU |
> -------------------------------------------------
> 2.4.0-pre3 | 99MB/s | 87% | 23% |
> NSF | | | |
> -------------------------------------------------
> 2.4.0-pre3 | 86MB/s | 100% | 17% |
> SF | | | |
> -------------------------------------------------
> 2.4.0-pre3 | 66.2 | 60% | 11% |
> +ZC | MB/s | | |
> -------------------------------------------------
> 2.4.0-pre3 | 68 | 8% | 8% |
> +ZC SF | MB/s | | |
> -------------------------------------------------
>
> Just ignore the CPU readings, focus on throughput. And could someone plese
> post results?
In the spirit of the socratic method :)
Is your gige card based on Alteon?
How does ZC/SG change the nature of the packets presented to the NIC?
How well does the NIC do with that changed nature?
rick jones
sometimes, performance tuning is like squeezing a balloon. one part gets
smaller, but then you start to see the rest of the balloon...
--
ftp://ftp.cup.hp.com/dist/networking/misc/rachel/
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to email, OR post, but please do NOT do BOTH...
my email address is raj in the cup.hp.com domain...
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next prev parent reply other threads:[~2001-01-31 1:11 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-27 5:45 sendfile+zerocopy: fairly sexy (nothing to do with ECN) Andrew Morton
2001-01-27 6:20 ` Aaron Lehmann
2001-01-27 8:19 ` Andrew Morton
2001-01-27 10:09 ` Ion Badulescu
2001-01-27 10:45 ` Andrew Morton
2001-01-30 6:00 ` David S. Miller
2001-01-30 12:44 ` Andrew Morton
2001-01-30 12:52 ` David S. Miller
2001-01-30 14:58 ` Andrew Morton
2001-01-30 17:49 ` Chris Wedgwood
2001-01-30 22:17 ` David S. Miller
2001-01-31 0:31 ` Chris Wedgwood
2001-01-31 0:45 ` David S. Miller
2001-01-30 22:28 ` David S. Miller
2001-01-30 23:34 ` Andrew Morton
2001-02-02 10:12 ` Andrew Morton
2001-02-02 12:14 ` Trond Myklebust
2001-02-02 17:51 ` David Lang
2001-02-02 22:46 ` David S. Miller
2001-02-02 22:57 ` David Lang
2001-02-02 23:09 ` David S. Miller
2001-02-02 23:13 ` David Lang
2001-02-02 23:28 ` Jeff Barrow
2001-02-02 23:31 ` David S. Miller
2001-02-03 2:27 ` James Sutherland
2001-01-27 10:05 ` Ion Badulescu
2001-01-27 10:39 ` Andrew Morton
2001-01-27 12:49 ` jamal
2001-01-30 1:06 ` Ion Badulescu
2001-01-30 2:48 ` jamal
2001-01-30 3:26 ` Ion Badulescu
2001-01-31 0:53 ` Still not sexy! (Re: " jamal
2001-01-31 0:59 ` Ingo Molnar
2001-01-31 1:04 ` jamal
2001-01-31 1:14 ` Ingo Molnar
2001-01-31 1:39 ` jamal
2001-01-31 11:21 ` Malcolm Beattie
2001-01-31 11:24 ` Ingo Molnar
2001-01-31 1:10 ` Rick Jones [this message]
2001-01-31 1:45 ` Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing to dowith ECN) jamal
2001-01-31 2:25 ` Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN) Rick Jones
2001-02-04 19:48 ` jamal
2001-02-05 5:13 ` David S. Miller
2001-02-05 18:51 ` Rick Jones
2001-01-27 12:43 ` sendfile+zerocopy: fairly sexy (nothing to do with ECN) jamal
2001-01-27 13:29 ` Andrew Morton
2001-01-27 14:15 ` jamal
2001-01-28 16:05 ` Andrew Morton
2001-01-29 18:50 ` Rick Jones
[not found] ` <200101271854.VAA02845@ms2.inr.ac.ru>
2001-01-28 5:34 ` Andrew Morton
2001-01-28 13:37 ` Felix von Leitner
2001-01-28 14:11 ` Dan Hollis
2001-01-28 14:27 ` Andi Kleen
2001-01-29 21:50 ` Pavel Machek
2001-01-28 19:43 ` Gregory Maxwell
2001-01-28 19:48 ` Choosing Linux NICs (was: Re: sendfile+zerocopy: fairly sexy (nothing to do with ECN)) Felix von Leitner
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