From: "Edgar E. Iglesias" <edgar.iglesias@axis.com>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Edgar E. Iglesias" <edgar.iglesias@axis.com>,
davem@davemloft.net, hadi@cyberus.ca, shemminger@osdl.org,
mchan@broadcom.com, jesse.brandeburg@intel.com,
auke-jan.h.kok@intel.com, netdev@vger.kernel.org
Subject: Re: [PATCH] [e1000]: Remove unnecessary tx_lock
Date: Sun, 6 Aug 2006 11:18:53 +0200 [thread overview]
Message-ID: <20060806091853.GC22168@edgar.underground.se.axis.com> (raw)
In-Reply-To: <20060806091020.GA29454@gondor.apana.org.au>
On Sun, Aug 06, 2006 at 07:10:20PM +1000, Herbert Xu wrote:
> On Sun, Aug 06, 2006 at 11:03:54AM +0200, Edgar E. Iglesias wrote:
> >
> > > For UDP yes but does this really make sense for TCP?
> >
> > I don't know :)
> >
> > The flow may end up with SNDBUF worth of skbs on the socket
> > transmit_queue + cwnd worth of skbs on the qdisc queue + full tx ring. In slow
> > start we'll increase cwnd and won't se packet loss until the qdisc is full
> > (which might be at 1000 pkts).
>
> For TCP, the packets stay on the transmit queue until they're acked.
> So all those packets on the qdisc queue (and tx ring) are still charged
> to the socket. The only difference is that right now we're double-
> charging the ones on the qdisc queue..
I see, then I guess this won't be a problem.
Thanks,
--
Programmer
Edgar E. Iglesias <edgar.iglesias@axis.com> 46.46.272.1946
next prev parent reply other threads:[~2006-08-06 9:18 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-03 13:15 [PATCH] [e1000]: Remove unnecessary tx_lock jamal
2006-08-03 14:02 ` Herbert Xu
2006-08-03 14:24 ` jamal
2006-08-03 16:36 ` Brandeburg, Jesse
2006-08-03 18:05 ` Michael Chan
2006-08-03 22:08 ` jamal
2006-08-04 0:09 ` Michael Chan
2006-08-04 1:10 ` Herbert Xu
2006-08-04 8:37 ` Herbert Xu
2006-08-04 10:10 ` Herbert Xu
2006-08-04 10:16 ` jamal
2006-08-04 10:25 ` Herbert Xu
2006-08-04 10:45 ` jamal
2006-08-05 23:04 ` jamal
2006-08-05 23:06 ` Herbert Xu
2006-08-05 23:21 ` jamal
2006-08-05 23:30 ` Herbert Xu
2006-08-05 16:45 ` jamal
2006-08-04 17:12 ` Stephen Hemminger
2006-08-04 17:28 ` Michael Chan
2006-08-04 18:08 ` Stephen Hemminger
2006-08-04 23:31 ` David Miller
2006-08-05 16:56 ` jamal
2006-08-05 23:05 ` Herbert Xu
2006-08-05 23:17 ` jamal
2006-08-05 23:19 ` Herbert Xu
2006-08-05 23:36 ` jamal
2006-08-06 2:51 ` Herbert Xu
2006-08-06 7:14 ` Edgar E. Iglesias
2006-08-06 7:24 ` Herbert Xu
2006-08-06 7:30 ` Edgar E. Iglesias
2006-08-06 7:26 ` David Miller
2006-08-06 7:36 ` Herbert Xu
2006-08-06 8:06 ` Edgar E. Iglesias
2006-08-06 8:27 ` Herbert Xu
2006-08-06 9:03 ` Edgar E. Iglesias
2006-08-06 9:10 ` Herbert Xu
2006-08-06 9:18 ` Edgar E. Iglesias [this message]
2006-08-06 8:35 ` David Miller
2006-08-06 12:24 ` jamal
2006-08-06 12:33 ` jamal
2006-08-06 23:16 ` Jesse Brandeburg
2006-08-07 12:50 ` jamal
2006-08-07 15:21 ` Edgar E. Iglesias
2006-08-07 15:40 ` jamal
2006-08-07 15:59 ` Edgar E. Iglesias
2006-08-07 16:31 ` Jamal Hadi Salim
2006-08-07 17:04 ` Edgar E. Iglesias
2006-08-07 18:00 ` jamal
2006-08-07 18:47 ` Edgar E. Iglesias
2006-08-07 19:03 ` jamal
2006-08-07 19:14 ` Edgar E. Iglesias
2006-08-07 19:34 ` jamal
2006-08-07 20:28 ` Edgar E. Iglesias
2006-08-08 0:52 ` jamal
2006-08-07 20:53 ` Brandeburg, Jesse
2006-08-08 1:07 ` jamal
2006-08-07 23:23 ` Herbert Xu
2006-08-07 23:35 ` Brandeburg, Jesse
2006-08-07 23:40 ` Herbert Xu
2006-08-07 16:29 ` Edgar E. Iglesias
2006-08-07 16:36 ` jamal
2006-08-06 19:22 ` jamal
2006-08-08 1:19 ` jamal
2006-08-08 1:22 ` Herbert Xu
2006-08-08 1:33 ` jamal
2006-08-08 2:17 ` Herbert Xu
2006-08-08 3:10 ` jamal
2006-08-08 12:21 ` jamal
2006-08-08 12:39 ` Herbert Xu
2006-08-06 17:20 ` Michael Chan
2006-08-06 23:04 ` Herbert Xu
2006-08-07 3:56 ` Michael Chan
2006-08-07 4:21 ` Herbert Xu
2006-08-08 17:04 ` Benjamin LaHaise
2006-08-08 22:06 ` David Miller
2006-08-08 23:21 ` Benjamin LaHaise
2006-08-09 0:25 ` Herbert Xu
2006-08-09 1:25 ` Benjamin LaHaise
2006-08-04 1:16 ` jamal
2006-08-04 1:18 ` Herbert Xu
2006-08-04 1:25 ` jamal
2006-08-04 4:06 ` Michael Chan
2006-08-03 22:06 ` jamal
-- strict thread matches above, loose matches on Subject: below --
2006-08-08 5:43 Brandeburg, Jesse
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