From: David Miller <davem@davemloft.net>
To: rick.jones2@hp.com
Cc: eric.dumazet@gmail.com, netdev@vger.kernel.org
Subject: Re: [PATCH net-next] tcp: reduce memory needs of out of order queue
Date: Fri, 14 Oct 2011 19:18:45 -0400 (EDT) [thread overview]
Message-ID: <20111014.191845.232827637484150228.davem@davemloft.net> (raw)
In-Reply-To: <4E98B3B4.20406@hp.com>
From: Rick Jones <rick.jones2@hp.com>
Date: Fri, 14 Oct 2011 15:12:04 -0700
> From just a very quick look it looks like tcp_v[46]_rcv is called,
> finds that the socket is owned by the user, attempts to add to the
> backlog, but the path called by sk_add_backlog does not seem to make
> any attempts to compress things, so when the quantity of data is <<
> the truesize it starts tossing babies out with the bathwater.
This is why I don't believe the right fix is to add bandaids all
around the TCP layer.
The wastage has to be avoided at a higher level.
next prev parent reply other threads:[~2011-10-14 23:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-14 7:19 [PATCH net-next] tcp: reduce memory needs of out of order queue Eric Dumazet
2011-10-14 7:42 ` David Miller
2011-10-14 8:05 ` Eric Dumazet
2011-10-14 17:33 ` Eric Dumazet
2011-10-14 15:50 ` Rick Jones
2011-10-14 16:00 ` Eric Dumazet
2011-10-14 16:11 ` Eric Dumazet
2011-10-14 22:12 ` Rick Jones
2011-10-14 23:18 ` David Miller [this message]
2011-10-15 6:54 ` Eric Dumazet
2011-10-17 0:53 ` David Miller
2011-10-17 7:02 ` Eric Dumazet
2011-10-15 6:39 ` Eric Dumazet
2011-10-17 16:47 ` Rick Jones
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