From: Nivedita Singhvi <niv@us.ibm.com>
To: jamal <hadi@cyberus.ca>
Cc: Troy Wilson <tcw@tempest.prismnet.com>,
linux-kernel@vger.kernel.org, netdev@oss.sgi.com
Subject: Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000
Date: Thu, 5 Sep 2002 15:48:35 -0700 [thread overview]
Message-ID: <1031266115.3d77df4344463@imap.linux.ibm.com> (raw)
In-Reply-To: <Pine.GSO.4.30.0209051648020.17973-100000@shell.cyberus.ca>
Quoting jamal <hadi@cyberus.ca>:
> So if i understood correctly (looking at the intel site) the main
> value add of this feature is probably in having the CPU avoid
> reassembling and retransmitting. I am willing to bet that the real
Er, even just assembling and transmitting? I'm thinking of the
reduction in things like separate memory allocation calls and looking
up the route, etc..??
> value in your results is in saving on retransmits; I would think
> shoving the data down the NIC and avoid the fragmentation shouldnt
> give you that much significant CPU savings. Do you have any stats
Why do say that? Wouldnt the fact that youre now reducing the
number of calls down the stack by a significant number provide
a significant saving?
> from the hardware that could show retransmits etc; have you tested
> this with zero copy as well (sendfile) again, if i am right you
> shouldnt see much benefit from that either?
thanks,
Nivedita
next prev parent reply other threads:[~2002-09-05 22:48 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-05 18:30 Early SPECWeb99 results on 2.5.33 with TSO on e1000 Troy Wilson
2002-09-05 20:59 ` jamal
2002-09-05 22:11 ` Troy Wilson
2002-09-05 22:39 ` Nivedita Singhvi
2002-09-05 23:01 ` Dave Hansen
2002-09-05 22:48 ` Nivedita Singhvi [this message]
2002-09-06 1:47 ` jamal
2002-09-06 3:38 ` Nivedita Singhvi
2002-09-06 3:58 ` David S. Miller
2002-09-06 4:20 ` Nivedita Singhvi
2002-09-06 4:17 ` David S. Miller
2002-09-07 0:05 ` Troy Wilson
2002-09-06 3:56 ` David S. Miller
2002-09-06 3:47 ` David S. Miller
2002-09-06 6:48 ` Martin J. Bligh
2002-09-06 6:51 ` David S. Miller
2002-09-06 7:36 ` Andrew Morton
2002-09-06 7:22 ` David S. Miller
2002-09-06 9:54 ` jamal
2002-09-06 14:29 ` Martin J. Bligh
2002-09-06 15:38 ` Dave Hansen
2002-09-06 16:11 ` Martin J. Bligh
2002-09-06 16:21 ` Nivedita Singhvi
2002-09-06 15:29 ` Dave Hansen
2002-09-06 16:29 ` Martin J. Bligh
2002-09-06 17:36 ` Dave Hansen
2002-09-06 18:26 ` Andi Kleen
2002-09-06 18:33 ` Dave Hansen
2002-09-06 18:36 ` David S. Miller
2002-09-06 18:45 ` Martin J. Bligh
2002-09-06 18:43 ` David S. Miller
2002-09-06 19:19 ` Nivedita Singhvi
2002-09-06 19:21 ` David S. Miller
2002-09-06 19:45 ` Nivedita Singhvi
2002-09-06 19:26 ` Andi Kleen
2002-09-06 19:24 ` David S. Miller
2002-09-06 19:45 ` Martin J. Bligh
2002-09-06 17:26 ` Gerrit Huizenga
2002-09-06 17:37 ` David S. Miller
2002-09-06 18:19 ` Gerrit Huizenga
2002-09-06 18:26 ` Martin J. Bligh
2002-09-06 18:36 ` David S. Miller
2002-09-06 18:51 ` Martin J. Bligh
2002-09-06 18:48 ` David S. Miller
2002-09-06 19:05 ` Gerrit Huizenga
2002-09-06 19:01 ` David S. Miller
2002-09-06 20:29 ` Alan Cox
2002-09-06 18:34 ` David S. Miller
2002-09-06 18:57 ` Gerrit Huizenga
2002-09-06 18:58 ` David S. Miller
2002-09-06 19:52 ` Gerrit Huizenga
2002-09-06 19:49 ` David S. Miller
2002-09-06 20:03 ` Gerrit Huizenga
2002-09-06 23:48 ` Troy Wilson
2002-09-11 9:11 ` Eric W. Biederman
2002-09-11 14:10 ` Martin J. Bligh
2002-09-11 15:06 ` Eric W. Biederman
2002-09-11 15:15 ` David S. Miller
2002-09-11 15:31 ` Eric W. Biederman
2002-09-11 15:27 ` Martin J. Bligh
2002-09-12 7:28 ` Todd Underwood
2002-09-12 12:30 ` jamal
2002-09-12 13:57 ` Todd Underwood
2002-09-12 14:11 ` Alan Cox
2002-09-12 14:41 ` todd-lkml
2002-09-12 23:12 ` David S. Miller
2002-09-13 21:59 ` todd-lkml
2002-09-13 22:04 ` David S. Miller
2002-09-15 20:16 ` jamal
2002-09-16 4:23 ` David S. Miller
2002-09-16 14:16 ` todd-lkml
2002-09-16 19:52 ` David S. Miller
2002-09-16 21:32 ` todd-lkml
2002-09-16 21:29 ` David S. Miller
2002-09-16 22:53 ` David Woodhouse
2002-09-16 22:46 ` David S. Miller
2002-09-16 23:03 ` David Woodhouse
2002-09-16 23:08 ` Jeff Garzik
2002-09-16 23:02 ` David S. Miller
2002-09-16 23:48 ` Jeff Garzik
2002-09-16 23:43 ` David S. Miller
2002-09-17 0:01 ` Jeff Garzik
2002-09-17 10:31 ` jamal
2002-09-13 22:12 ` Nivedita Singhvi
2002-09-12 17:18 ` Nivedita Singhvi
2002-09-06 23:56 ` Troy Wilson
2002-09-06 23:52 ` David S. Miller
2002-09-07 0:18 ` Nivedita Singhvi
2002-09-07 0:27 ` Troy Wilson
-- strict thread matches above, loose matches on Subject: below --
2002-09-05 20:47 Feldman, Scott
2002-09-06 11:44 Robert Olsson
2002-09-06 14:37 ` Martin J. Bligh
2002-09-06 15:38 ` Robert Olsson
2002-09-06 18:35 Manfred Spraul
2002-09-06 18:38 ` David S. Miller
2002-09-06 19:40 ` Manfred Spraul
2002-09-06 19:34 ` David S. Miller
2002-09-10 12:02 ` Robert Olsson
2002-09-10 16:55 ` Manfred Spraul
2002-09-11 7:46 ` Robert Olsson
2002-09-10 14:59 Mala Anand
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