From: jamal <hadi@cyberus.ca>
To: Bill Fink <billfink@mindspring.com>
Cc: David Miller <davem@davemloft.net>,
krkumar2@in.ibm.com, johnpol@2ka.mipt.ru,
herbert@gondor.apana.org.au, kaber@trash.net,
shemminger@linux-foundation.org, jagana@us.ibm.com,
Robert.Olsson@data.slu.se, rick.jones2@hp.com, xma@us.ibm.com,
gaagaan@gmail.com, netdev@vger.kernel.org, rdreier@cisco.com,
peter.p.waskiewicz.jr@intel.com, mcarlson@broadcom.com,
jeff@garzik.org, mchan@broadcom.com,
general@lists.openfabrics.org, kumarkr@linux.ibm.com,
tgraf@suug.ch, randy.dunlap@oracle.com, sri@us.ibm.com
Subject: Re: [PATCH 2/3][NET_BATCH] net core use batching
Date: Mon, 01 Oct 2007 09:30:40 -0400 [thread overview]
Message-ID: <1191245440.4378.12.camel@localhost> (raw)
In-Reply-To: <20071001001135.75d2b984.billfink@mindspring.com>
On Mon, 2007-01-10 at 00:11 -0400, Bill Fink wrote:
> Have you done performance comparisons for the case of using 9000-byte
> jumbo frames?
I havent, but will try if any of the gige cards i have support it.
As a side note: I have not seen any useful gains or losses as the packet
size approaches even 1500B MTU. For example, post about 256B neither the
batching nor the non-batching give much difference in either throughput
or cpu use. Below 256B, theres a noticeable gain for batching.
Note, in the cases of my tests all 4 CPUs are in full-throttle UDP and
so the occupancy of both the qdisc queue(s) and ethernet ring is
constantly high. For example at 512B, the app is 80% idle on all 4 CPUs
and we are hitting in the range of wire speed. We are at 90% idle at
1024B. This is the case with or without batching. So my suspicion is
that with that trend a 9000B packet will just follow the same pattern.
cheers,
jamal
next prev parent reply other threads:[~2007-10-01 13:30 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-14 9:00 [PATCH 0/10 REV5] Implement skb batching and support in IPoIB/E1000 Krishna Kumar
2007-09-14 9:01 ` [PATCH 1/10 REV5] [Doc] HOWTO Documentation for batching Krishna Kumar
2007-09-14 18:37 ` [ofa-general] " Randy Dunlap
2007-09-17 4:10 ` Krishna Kumar2
2007-09-17 4:13 ` [ofa-general] " Jeff Garzik
2007-09-14 9:01 ` [PATCH 2/10 REV5] [core] Add skb_blist & support " Krishna Kumar
2007-09-14 12:46 ` [ofa-general] " Evgeniy Polyakov
2007-09-17 3:51 ` Krishna Kumar2
2007-09-14 9:01 ` [PATCH 3/10 REV5] [sched] Modify qdisc_run to support batching Krishna Kumar
2007-09-14 12:15 ` [ofa-general] " Evgeniy Polyakov
2007-09-17 3:49 ` Krishna Kumar2
2007-09-14 9:02 ` [PATCH 4/10 REV5] [ethtool] Add ethtool support Krishna Kumar
2007-09-14 9:02 ` [PATCH 5/10 REV5] [IPoIB] Header file changes Krishna Kumar
2007-09-14 9:03 ` [PATCH 6/10 REV5] [IPoIB] CM & Multicast changes Krishna Kumar
2007-09-14 9:03 ` [PATCH 7/10 REV5] [IPoIB] Verbs changes Krishna Kumar
2007-09-14 9:03 ` [PATCH 8/10 REV5] [IPoIB] Post and work completion handler changes Krishna Kumar
2007-09-14 9:04 ` [PATCH 9/10 REV5] [IPoIB] Implement batching Krishna Kumar
2007-09-14 9:04 ` [PATCH 10/10 REV5] [E1000] " Krishna Kumar
2007-09-14 12:47 ` [ofa-general] " Evgeniy Polyakov
2007-09-17 3:56 ` Krishna Kumar2
2007-11-13 21:28 ` [ofa-general] " Kok, Auke
2007-11-14 8:30 ` Krishna Kumar2
2007-09-14 12:49 ` [ofa-general] Re: [PATCH 0/10 REV5] Implement skb batching and support in IPoIB/E1000 Evgeniy Polyakov
2007-09-16 23:17 ` David Miller
2007-09-17 0:29 ` jamal
2007-09-17 1:02 ` David Miller
2007-09-17 2:14 ` [ofa-general] " jamal
2007-09-17 2:25 ` David Miller
2007-09-17 3:01 ` jamal
2007-09-17 3:13 ` David Miller
2007-09-17 12:51 ` jamal
2007-09-17 16:37 ` [ofa-general] " David Miller
2007-09-17 4:46 ` Krishna Kumar2
2007-09-23 17:53 ` [PATCHES] TX batching jamal
2007-09-23 17:56 ` [ofa-general] [PATCH 1/4] [NET_SCHED] explict hold dev tx lock jamal
2007-09-23 17:58 ` [ofa-general] [PATCH 2/4] [NET_BATCH] Introduce batching interface jamal
2007-09-23 18:00 ` [PATCH 3/4][NET_BATCH] net core use batching jamal
2007-09-23 18:02 ` [ofa-general] [PATCH 4/4][NET_SCHED] kill dev->gso_skb jamal
2007-09-30 18:53 ` [ofa-general] [PATCH 3/3][NET_SCHED] " jamal
2007-10-07 18:39 ` [ofa-general] [PATCH 3/3][NET_BATCH] " jamal
2007-09-30 18:52 ` [ofa-general] [PATCH 2/3][NET_BATCH] net core use batching jamal
2007-10-01 4:11 ` Bill Fink
2007-10-01 13:30 ` jamal [this message]
2007-10-02 4:25 ` [ofa-general] " Bill Fink
2007-10-02 13:20 ` jamal
2007-10-03 5:29 ` [ofa-general] " Bill Fink
2007-10-03 13:42 ` jamal
2007-10-01 10:42 ` [ofa-general] " Patrick McHardy
2007-10-01 13:21 ` jamal
2007-10-08 5:03 ` Krishna Kumar2
2007-10-08 13:17 ` jamal
2007-10-09 3:09 ` [ofa-general] " Krishna Kumar2
2007-10-09 13:10 ` jamal
2007-10-07 18:38 ` [ofa-general] " jamal
2007-09-30 18:51 ` [ofa-general] [PATCH 1/4] [NET_BATCH] Introduce batching interface jamal
2007-09-30 18:54 ` [ofa-general] Re: [PATCH 1/3] " jamal
2007-10-07 18:36 ` [ofa-general] " jamal
2007-10-08 9:59 ` Krishna Kumar2
2007-10-08 13:49 ` jamal
2007-09-24 19:12 ` [ofa-general] RE: [PATCH 1/4] [NET_SCHED] explict hold dev tx lock Waskiewicz Jr, Peter P
2007-09-24 22:51 ` jamal
2007-09-24 22:57 ` Waskiewicz Jr, Peter P
2007-09-24 23:38 ` [ofa-general] " jamal
2007-09-24 23:47 ` Waskiewicz Jr, Peter P
2007-09-25 0:14 ` [ofa-general] " Stephen Hemminger
2007-09-25 0:31 ` [ofa-general] " Waskiewicz Jr, Peter P
2007-09-25 13:15 ` [ofa-general] " jamal
2007-09-25 15:24 ` Stephen Hemminger
2007-09-25 22:14 ` jamal
2007-09-25 22:43 ` jamal
2007-09-25 13:08 ` [ofa-general] " jamal
2007-10-08 4:51 ` [ofa-general] " David Miller
2007-10-08 13:34 ` jamal
2007-10-08 14:22 ` parallel networking (was Re: [PATCH 1/4] [NET_SCHED] explict hold dev tx lock) Jeff Garzik
2007-10-08 15:18 ` jamal
2007-10-08 15:18 ` [ofa-general] " jamal
2007-10-08 21:11 ` parallel networking David Miller
2007-10-08 21:11 ` [ofa-general] " David Miller
2007-10-08 22:30 ` jamal
2007-10-08 22:33 ` David Miller
2007-10-08 22:35 ` Waskiewicz Jr, Peter P
2007-10-08 22:35 ` [ofa-general] " Waskiewicz Jr, Peter P
2007-10-08 23:42 ` jamal
2007-10-08 23:42 ` [ofa-general] " jamal
2007-10-09 1:53 ` Jeff Garzik
2007-10-09 1:53 ` [ofa-general] " Jeff Garzik
2007-10-09 14:59 ` Michael Krause
2007-10-08 21:05 ` [PATCH 1/4] [NET_SCHED] explict hold dev tx lock David Miller
2007-09-23 18:19 ` [PATCHES] TX batching Jeff Garzik
2007-09-23 19:11 ` [ofa-general] " jamal
2007-09-23 19:36 ` Kok, Auke
2007-09-23 21:20 ` jamal
2007-09-24 7:00 ` Kok, Auke
2007-09-24 22:38 ` jamal
2007-09-24 22:52 ` [ofa-general] " Kok, Auke
2007-09-24 22:54 ` [DOC] Net batching driver howto jamal
2007-09-25 20:16 ` [ofa-general] " Randy Dunlap
2007-09-25 22:28 ` jamal
2007-09-25 0:15 ` [PATCHES] TX batching Jeff Garzik
2007-09-30 18:50 ` [ofa-general] " jamal
2007-09-30 19:19 ` [ofa-general] " jamal
2007-10-07 18:34 ` [ofa-general] " jamal
2007-10-08 12:51 ` [ofa-general] " Evgeniy Polyakov
2007-10-08 14:05 ` jamal
2007-10-09 8:14 ` Krishna Kumar2
2007-10-09 13:25 ` jamal
2007-09-17 4:08 ` [PATCH 0/10 REV5] Implement skb batching and support in IPoIB/E1000 Krishna Kumar2
-- strict thread matches above, loose matches on Subject: below --
2007-10-08 18:26 [PATCH 2/3][NET_BATCH] net core use batching jamal
2007-10-08 19:46 ` Waskiewicz Jr, Peter P
2007-10-08 20:48 ` jamal
2007-10-08 22:33 ` [ofa-general] " Waskiewicz Jr, Peter P
2007-10-08 23:40 ` jamal
2007-10-09 1:13 ` Jeff Garzik
2007-10-09 1:41 ` [ofa-general] " David Miller
2007-10-09 2:01 ` Herbert Xu
2007-10-09 2:03 ` Herbert Xu
2007-10-09 2:04 ` Herbert Xu
2007-10-09 2:15 ` jamal
2007-10-09 2:16 ` Herbert Xu
2007-10-09 2:19 ` [ofa-general] " jamal
2007-10-09 2:20 ` Herbert Xu
2007-10-09 2:43 ` [ofa-general] " David Miller
2007-10-09 2:46 ` Herbert Xu
2007-10-09 2:12 ` [ofa-general] " Jeff Garzik
2007-10-09 18:48 ` [ofa-general] " Waskiewicz Jr, Peter P
2007-10-09 19:04 ` Jeff Garzik
2007-10-09 19:07 ` Waskiewicz Jr, Peter P
2007-10-09 2:14 ` [ofa-general] " jamal
2007-10-09 2:16 ` Herbert Xu
2007-10-09 1:31 ` Jeff Garzik
2007-10-09 10:58 ` [ofa-general] " Krishna Kumar2
2007-10-09 11:02 ` David Miller
2007-10-09 11:21 ` [ofa-general] " Krishna Kumar2
2007-10-09 11:24 ` David Miller
2007-10-09 12:44 ` [ofa-general] " Jeff Garzik
2007-10-09 12:55 ` Herbert Xu
2007-10-09 13:00 ` Jeff Garzik
2007-10-09 20:14 ` David Miller
2007-10-09 20:20 ` [ofa-general] " Jeff Garzik
2007-10-09 21:25 ` David Miller
2007-10-09 20:22 ` [ofa-general] " Roland Dreier
2007-10-09 20:51 ` David Miller
2007-10-09 21:40 ` Roland Dreier
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