From: Nivedita Singhvi <niv@us.ibm.com>
To: bert hubert <ahu@ds9a.nl>
Cc: Roy Sigurd Karlsbakk <roy@karlsbakk.net>,
"David S. Miller" <davem@rth.ninka.net>,
netdev@oss.sgi.com,
Kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [RESEND] tuning linux for high network performance?
Date: Wed, 23 Oct 2002 10:12:23 -0700 [thread overview]
Message-ID: <3DB6D877.3D5489DA@us.ibm.com> (raw)
In-Reply-To: 20021023170102.GA5302@outpost.ds9a.nl
bert hubert wrote:
> I still refuse to believe that a 1.8GHz Pentium4 can only checksum
> 250megabits/second. MD Raid5 does better and they probably don't use a
> checksum as braindead as that used by TCP.
>
> If the checksumming is not the problem, the copying is, which would be a
> weakness of your hardware. The function profiled does both the copying and
> the checksumming.
Yep, its not so much the checksumming as the fact that this is
done over each byte of data and copied.
thanks,
Nivedita
next prev parent reply other threads:[~2002-10-23 17:12 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-23 10:18 tuning linux for high network performance? Roy Sigurd Karlsbakk
2002-10-23 11:06 ` [RESEND] " Roy Sigurd Karlsbakk
2002-10-23 13:01 ` bert hubert
2002-10-23 13:21 ` David S. Miller
2002-10-23 13:42 ` Roy Sigurd Karlsbakk
2002-10-23 17:01 ` bert hubert
2002-10-23 17:10 ` Ben Greear
2002-10-23 17:11 ` Richard B. Johnson
2002-10-23 17:12 ` Nivedita Singhvi [this message]
2002-10-23 17:56 ` Richard B. Johnson
2002-10-23 18:07 ` Nivedita Singhvi
2002-10-23 18:30 ` Richard B. Johnson
2002-10-24 4:11 ` David S. Miller
2002-10-24 9:37 ` Karen Shaeffer
2002-10-24 10:30 ` sendfile64() anyone? (was [RESEND] tuning linux for high network performance?) Roy Sigurd Karlsbakk
2002-10-24 10:47 ` David S. Miller
2002-10-24 11:07 ` Roy Sigurd Karlsbakk
2002-10-23 13:41 ` [RESEND] tuning linux for high network performance? Roy Sigurd Karlsbakk
2002-10-23 14:59 ` Nivedita Singhvi
2002-10-23 15:26 ` O_DIRECT sockets? (was [RESEND] tuning linux for high network performance?) Roy Sigurd Karlsbakk
2002-10-23 16:34 ` Nivedita Singhvi
2002-10-23 16:34 ` Nivedita Singhvi
2002-10-24 10:14 ` Roy Sigurd Karlsbakk
2002-10-24 10:46 ` David S. Miller
2002-10-24 10:46 ` David S. Miller
2002-10-23 18:01 ` [RESEND] tuning linux for high network performance? Denis Vlasenko
2002-10-23 13:36 ` Roy Sigurd Karlsbakk
2002-10-24 16:22 ` Denis Vlasenko
2002-10-24 11:50 ` Russell King
2002-10-24 12:42 ` bert hubert
2002-10-24 17:41 ` Denis Vlasenko
2002-10-25 11:36 ` Csum and csum copyroutines benchmark Denis Vlasenko
2002-10-25 7:48 ` Momchil Velikov
2002-10-25 13:59 ` Denis Vlasenko
2002-10-25 9:47 ` Momchil Velikov
2002-10-25 10:19 ` Alan Cox
2002-10-25 16:00 ` Denis Vlasenko
2002-10-25 14:26 ` Daniel Egger
2002-10-23 14:52 ` [RESEND] tuning linux for high network performance? Nivedita Singhvi
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