From: Dave Hansen <haveblue@us.ibm.com>
To: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>
Cc: "David S. Miller" <davem@redhat.com>,
hadi@cyberus.ca, tcw@tempest.prismnet.com,
linux-kernel@vger.kernel.org, netdev@oss.sgi.com, niv@us.ibm.com
Subject: Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000
Date: Fri, 06 Sep 2002 08:38:30 -0700 [thread overview]
Message-ID: <3D78CBF6.10609@us.ibm.com> (raw)
In-Reply-To: 46202575.1031297360@[10.10.2.3]
Martin J. Bligh wrote:
>>Stupid question, are you sure you have CONFIG_E1000_NAPI enabled?
>>
>>NAPI is also not the panacea to all problems in the world.
>
> No, but I didn't expect throughput to drop by 40% or so either,
> which is (very roughly) what happened. Interrupts are a pain to
> manage and do affinity with, so NAPI should (at least in theory)
> be better for this kind of setup ... I think.
No, no. Bad Martin! Throughput didn't drop, "Specweb compliance" dropped.
Those are two very, very different things. I've found that the server
can produce a lot more throughput, although it doesn't have the
characteristics that Specweb considers compliant. Just have Troy enable
mod-status and look at the throughput that Apache tells you that it is
giving during a run. _That_ is real throughput, not number of compliant
connections.
_And_ NAPI is for receive only, right? Also, my compliance drop occurs
with the NAPI checkbox disabled. There is something else in the new driver
that causes our problems.
--
Dave Hansen
haveblue@us.ibm.com
next prev parent reply other threads:[~2002-09-06 15:38 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
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 [this message]
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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