From: Bill Fink <billfink@mindspring.com>
To: Aviv Greenberg <avivgnet@gmail.com>
Cc: Andrew Gallatin <gallatin@myri.com>, netdev@vger.kernel.org
Subject: Re: Receive side performance issue with multi-10-GigE and NUMA
Date: Thu, 20 Aug 2009 03:26:01 -0400 [thread overview]
Message-ID: <20090820032601.03a628cf.billfink@mindspring.com> (raw)
In-Reply-To: <3000d2e90908141413h3e3eae1dm796f4bf788319561@mail.gmail.com>
On Sat, 15 Aug 2009, Aviv Greenberg wrote:
> > There may be something in the chipset
>
> shooting in the dark: when you lspci -vvv and check the MaxPayload and
> MaxReadReq values for the myri devices - what are the values and are
> they equal? Are they the same on all your platforms?
IIRC, under DevCap they indicated MaxPayload 4096 bytes, and under
DevCtl they indicated MaxPayload 128 bytes and MaxReadReq 4096 bytes,
and was the same on both the Asus and SuperMicro systems. I will
doublecheck tomorrow at work. I am not clear on the meanings of
the different parameters. And is DevCtl for PCI control messages
and DevCap for actual data transfers or something else?
-Thanks
-Bill
next prev parent reply other threads:[~2009-08-20 7:26 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-07 21:06 Receive side performance issue with multi-10-GigE and NUMA Bill Fink
2009-08-07 21:18 ` Brice Goglin
2009-08-07 21:51 ` Bill Fink
2009-08-07 21:53 ` Brice Goglin
2009-08-07 22:08 ` Bill Fink
2009-08-07 22:17 ` Brice Goglin
2009-08-07 22:55 ` Bill Fink
2009-08-08 1:03 ` Andrew Gallatin
2009-08-08 1:35 ` Bill Fink
2009-08-08 11:08 ` Andrew Gallatin
2009-08-08 11:26 ` Neil Horman
2009-08-08 18:21 ` Andrew Gallatin
2009-08-08 18:32 ` Neil Horman
2009-08-11 7:32 ` Bill Fink
2009-08-11 11:02 ` Neil Horman
2009-08-11 19:15 ` Christoph Lameter
2009-08-11 22:27 ` Andi Kleen
2009-08-12 4:30 ` Bill Fink
2009-08-12 7:21 ` Andi Kleen
[not found] ` <4A856781.2080301@myri.com>
2009-08-14 16:38 ` Bill Fink
2009-08-14 16:55 ` Andrew Gallatin
2009-08-14 21:13 ` Aviv Greenberg
2009-08-20 7:26 ` Bill Fink [this message]
2009-08-20 13:14 ` Ben Hutchings
2009-08-21 4:00 ` Bill Fink
2009-08-20 13:17 ` Aviv Greenberg
2009-08-12 0:02 ` Brandeburg, Jesse
2009-08-12 4:38 ` Bill Fink
2009-08-12 16:00 ` Jesse Barnes
2009-08-14 20:31 ` Bill Fink
2009-08-17 16:53 ` Jesse Barnes
2009-08-18 7:07 ` Bill Fink
2009-08-18 11:54 ` Andrew Gallatin
2009-08-19 17:59 ` Bill Fink
2009-08-07 22:12 ` Neil Horman
2009-08-08 0:54 ` Bill Fink
2009-08-08 1:56 ` Neil Horman
2009-08-14 20:44 ` Bill Fink
2009-08-14 23:25 ` Neil Horman
2009-08-20 7:50 ` Bill Fink
2009-08-20 20:19 ` Neil Horman
2009-08-21 4:14 ` Bill Fink
2009-08-21 15:23 ` Neil Horman
2009-08-21 15:36 ` Andrew Gallatin
2009-08-26 7:10 ` Bill Fink
2009-08-26 11:00 ` Neil Horman
2009-08-26 18:08 ` Neil Horman
2009-08-26 18:15 ` Ingo Molnar
2009-08-26 19:04 ` Neil Horman
2009-08-26 19:08 ` Ingo Molnar
2009-08-26 19:36 ` David Miller
2009-08-26 19:48 ` Ingo Molnar
2009-08-26 20:23 ` Neil Horman
2009-08-26 20:40 ` Ingo Molnar
2009-08-26 22:39 ` Neil Horman
2009-08-26 22:44 ` David Miller
2009-08-26 23:05 ` Ingo Molnar
2009-08-26 23:08 ` David Miller
2009-08-26 23:58 ` Ingo Molnar
2009-08-27 0:05 ` Steven Rostedt
2009-08-27 0:35 ` Christoph Hellwig
2009-08-27 9:28 ` Ingo Molnar
2009-08-26 23:05 ` Steven Rostedt
2009-08-26 23:09 ` David Miller
2009-08-26 23:30 ` Ingo Molnar
2009-08-26 23:23 ` Neil Horman
2009-08-26 23:29 ` David Miller
2009-08-26 23:19 ` Neil Horman
2009-08-26 23:14 ` Ingo Molnar
2009-08-26 23:33 ` Steven Rostedt
2009-08-27 0:14 ` Neil Horman
2009-08-27 0:29 ` Steven Rostedt
2009-08-27 1:17 ` Neil Horman
2009-08-27 9:06 ` Ingo Molnar
2009-08-27 9:34 ` Ingo Molnar
2009-08-27 0:34 ` Christoph Hellwig
2009-08-27 0:30 ` blktrace ftrace plugin, was " Christoph Hellwig
2009-08-27 5:26 ` Jens Axboe
2009-08-27 9:12 ` Ingo Molnar
2009-08-27 9:14 ` Jens Axboe
2009-08-27 13:55 ` Arnaldo Carvalho de Melo
2009-08-28 2:03 ` Li Zefan
2009-08-26 23:46 ` Frederic Weisbecker
2009-08-26 20:28 ` Ingo Molnar
2009-08-26 20:01 ` Neil Horman
2009-08-26 22:57 ` Ingo Molnar
2009-08-27 17:32 ` Bill Fink
2009-09-02 5:28 ` Bill Fink
2009-08-27 17:44 ` Bill Fink
2009-08-27 17:51 ` Neil Horman
2009-09-02 5:11 ` Bill Fink
2009-09-02 10:49 ` Neil Horman
2009-09-02 15:38 ` Bill Fink
2009-08-12 23:29 ` David Miller
2009-08-13 2:35 ` Bill Fink
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