From: Rick Jones <rick.jones2@hp.com>
To: David Laight <David.Laight@ACULAB.COM>,
Eric Dumazet <eric.dumazet@gmail.com>,
David Miller <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH net-next] tcp: auto corking
Date: Fri, 06 Dec 2013 13:34:28 -0800 [thread overview]
Message-ID: <52A242E4.2090304@hp.com> (raw)
In-Reply-To: <52A1F603.2030208@hp.com>
On 12/06/2013 08:06 AM, Rick Jones wrote:
> I was wondering why Nagle didn't catch these things as well. The
> netperf command line Eric provided though didn't include the
> test-specific -D option that would have disabled Nagle. At least not
> unless the "super_netperf" wrapper was adding it.
>
> So, why doesn't Nagle catch what is presumably a sub-MSS send while
> there is data outstanding on the connection?
Because this is operating "above" (as it were) Nagle and is looking only
to try to get the successive small sends into a smaller number of skbs
yes? So that when there is either no data outstanding, or an MSS's worth
of data it will be in a small(ish) number of skbs not a long chain of them.
rick jones
next prev parent reply other threads:[~2013-12-06 21:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-06 6:36 [PATCH net-next] tcp: auto corking Eric Dumazet
2013-12-06 10:30 ` David Laight
2013-12-06 16:06 ` Rick Jones
2013-12-06 16:30 ` David Laight
2013-12-06 17:46 ` Eric Dumazet
2013-12-06 17:57 ` David Laight
2013-12-06 18:02 ` Rick Jones
2013-12-06 18:36 ` Eric Dumazet
2013-12-06 21:34 ` Rick Jones [this message]
2013-12-06 17:54 ` David Miller
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