From: Eric Dumazet <eric.dumazet@gmail.com>
To: Ming Lei <tom.leiming@gmail.com>
Cc: Network Development <netdev@vger.kernel.org>,
David Miller <davem@davemloft.net>
Subject: Re: TCP transmit performance regression
Date: Tue, 10 Jul 2012 16:45:58 +0200 [thread overview]
Message-ID: <1341931558.3265.5399.camel@edumazet-glaptop> (raw)
In-Reply-To: <CACVXFVPmec5_3Up9qM4iA90Xua9J_E-aRT-2g7Hu7TR4zRKQtA@mail.gmail.com>
On Tue, 2012-07-10 at 22:22 +0800, Ming Lei wrote:
> Looks single page allocation won't put too much pressure on MM, that is
> why I suggested to avoid copy if the skb buffer size is less or equal one
> page. Anyway, unnecessary copy will increase computation and consume power.
AFAIK this long thread started with drivers/net/usb/smsc95xx.c using
32KB buffers, thats order-3 pages, not 'single page'
Definitely very wrong. You can try to claim the contrary, it wont be
wise.
prev parent reply other threads:[~2012-07-10 14:46 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-05 1:45 TCP transmit performance regression Ming Lei
2012-07-05 7:43 ` Eric Dumazet
2012-07-05 8:27 ` Ming Lei
2012-07-05 8:33 ` Eric Dumazet
2012-07-05 8:42 ` Ming Lei
2012-07-05 9:49 ` Eric Dumazet
2012-07-05 10:02 ` David Miller
2012-07-05 10:32 ` Ming Lei
2012-07-05 10:41 ` Eric Dumazet
2012-07-05 14:01 ` Ming Lei
2012-07-05 14:28 ` Eric Dumazet
2012-07-05 14:56 ` Eric Dumazet
2012-07-06 0:45 ` Ming Lei
2012-07-06 4:58 ` Eric Dumazet
2012-07-06 5:16 ` Eric Dumazet
2012-07-09 5:13 ` Ming Lei
2012-07-09 13:23 ` Ming Lei
2012-07-09 13:54 ` Eric Dumazet
[not found] ` <CACVXFVNdiwVn1Mo--N4N0HdYrEJizExtd_cppT4tS=mjog2PKw@mail.gmail.com>
[not found] ` <1341895143.3265.4049.camel@edumazet-glaptop>
2012-07-10 7:22 ` Ming Lei
2012-07-10 8:28 ` Eric Dumazet
2012-07-10 13:37 ` Ming Lei
2012-07-10 14:02 ` Eric Dumazet
2012-07-10 14:22 ` Ming Lei
2012-07-10 14:45 ` Eric Dumazet [this message]
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