From: jamal <hadi@cyberus•ca>
To: David Miller <davem@davemloft•net>
Cc: rick.jones2@hp•com, krkumar2@in•ibm.com, gaagaan@gmail•com,
general@lists•openfabrics.org, herbert@gondor•apana.org.au,
jagana@us•ibm.com, jeff@garzik•org, johnpol@2ka•mipt.ru,
kaber@trash•net, mcarlson@broadcom•com, mchan@broadcom•com,
netdev@vger•kernel.org, peter.p.waskiewicz.jr@intel•com,
rdreier@cisco•com, Robert.Olsson@data•slu.se,
shemminger@linux-foundation•org, sri@us•ibm.com, tgraf@suug•ch,
xma@us•ibm.com
Subject: Re: [PATCH 0/9 Rev3] Implement batching skb API and support in IPoIB
Date: Thu, 23 Aug 2007 18:25:03 -0400 [thread overview]
Message-ID: <1187907903.4279.28.camel@localhost> (raw)
In-Reply-To: <1187906650.4279.16.camel@localhost>
On Thu, 2007-23-08 at 18:04 -0400, jamal wrote:
> The litmus test is the same as any change that is supposed to improve
> net performance - it has to demonstrate it is not intrusive and that it
> improves (consistently) performance. The standard metrics are
> {throughput, cpu-utilization, latency} i.e as long as one improves and
> others remain zero, it would make sense. Yes, i am religious for
> batching after all the invested sweat (and i continue to work on it
> hoping to demystify) - the theory makes a lot of sense.
Before someone jumps and strangles me ;-> By "litmus test" i meant as
applied to batching. [TSO already passed - iirc, it has been
demostranted to really not add much to throughput (cant improve much
over closeness to wire speed) but improve CPU utilization].
cheers,
jamal
next prev parent reply other threads:[~2007-08-23 22:25 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-17 6:06 [PATCH 0/9 Rev3] Implement batching skb API and support in IPoIB Krishna Kumar2
2007-08-21 7:18 ` David Miller
2007-08-21 12:30 ` [ofa-general] " jamal
2007-08-21 18:51 ` David Miller
2007-08-21 21:09 ` jamal
2007-08-21 22:50 ` David Miller
2007-08-22 4:11 ` [ofa-general] " Krishna Kumar2
2007-08-22 4:22 ` David Miller
2007-08-22 7:03 ` Krishna Kumar2
2007-08-22 9:14 ` David Miller
2007-08-23 2:43 ` Krishna Kumar2
2007-08-22 17:09 ` [ofa-general] " Rick Jones
2007-08-22 20:21 ` David Miller
2007-08-23 22:04 ` [ofa-general] " jamal
2007-08-23 22:25 ` jamal [this message]
2007-08-23 22:35 ` Rick Jones
2007-08-23 22:41 ` jamal
2007-08-24 3:18 ` Bill Fink
2007-08-24 12:14 ` jamal
2007-08-24 18:08 ` Bill Fink
2007-08-24 21:25 ` David Miller
2007-08-24 23:11 ` Herbert Xu
2007-08-25 23:45 ` Bill Fink
2007-08-24 18:46 ` [ofa-general] " Rick Jones
2007-08-25 0:42 ` John Heffner
2007-08-26 8:41 ` [ofa-general] " Bill Fink
2007-08-27 1:32 ` John Heffner
2007-08-27 2:04 ` David Miller
2007-08-27 23:23 ` jamal
2007-09-14 7:20 ` [ofa-general] " Bill Fink
2007-09-14 13:44 ` TSO, TCP Cong control etc jamal
2007-09-14 17:24 ` [PATCH 0/9 Rev3] Implement batching skb API and support in IPoIB David Miller
2007-08-23 22:30 ` David Miller
2007-08-23 22:38 ` [ofa-general] " jamal
2007-08-24 3:34 ` Stephen Hemminger
2007-08-24 12:36 ` jamal
2007-08-24 16:25 ` Rick Jones
[not found] <20070828.215150.98552996.davem@davemloft.net>
[not found] ` <OF46DAD75A.5ADE5863-ON65257346.001C9AA3-65257346.001CB0F4@in.ibm.com>
[not found] ` <20070828.221448.123919361.davem@davemloft.net>
2007-08-29 16:43 ` Waskiewicz Jr, Peter P
2007-09-03 9:21 ` Krishna Kumar2
-- strict thread matches above, loose matches on Subject: below --
2007-08-14 9:39 Krishna Kumar2
2007-08-08 22:01 [ofa-general] " David Miller
2007-08-09 4:19 ` Krishna Kumar2
2007-08-09 4:27 ` David Miller
2007-08-09 6:26 ` Krishna Kumar2
2007-08-08 13:42 [ofa-general] " Herbert Xu
2007-08-09 0:06 ` Shirley Ma
2007-08-08 10:49 [ofa-general] " David Miller
2007-08-08 11:09 ` Krishna Kumar2
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