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From: "David S. Miller" <davem@redhat.com>
To: Andi Kleen <ak@muc.de>
Cc: netdev@oss.sgi.com, mostrows@styx.uwaterloo.ca
Subject: Re: [PATCH] Increase snd/rcv buffers in pppoe
Date: Sun, 22 Feb 2004 23:26:01 -0800	[thread overview]
Message-ID: <20040222232601.481b8c57.davem@redhat.com> (raw)
In-Reply-To: <20040222234750.GA78924@colin2.muc.de>

On 23 Feb 2004 00:47:50 +0100
Andi Kleen <ak@muc.de> wrote:

> I noticed that a 64bit kernel only downloads half as fast over a PPPoE DSL
> connection than a 32bit kernel on the same hardware. The reason seems
> to be that PPPoE uses the default 64K snd/rcv buffers at socket creation.
> The bigger sk_buff header size on the 64bit kernel pushed
> the buffer into being too small and preventing good throughput.

I have no problem with this, but hey while we're at it why not do the same
for the core defaults instead?  I see no real harm in this at all as it's
not a pppoe specific issue.

What say you Andi?

  reply	other threads:[~2004-02-23  7:26 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-02-22 23:47 [PATCH] Increase snd/rcv buffers in pppoe Andi Kleen
2004-02-23  7:26 ` David S. Miller [this message]
2004-02-23 10:53   ` Andi Kleen
2004-02-23 11:01     ` YOSHIFUJI Hideaki / 吉藤英明
2004-02-23 11:16       ` Andi Kleen
2004-02-23 11:38         ` YOSHIFUJI Hideaki / 吉藤英明
2004-02-23 18:26           ` David S. Miller
2004-02-23 20:12             ` Andi Kleen
2004-02-23 21:32               ` David S. Miller
2004-02-26 19:49                 ` Andi Kleen
2004-02-26 20:42                   ` David S. Miller
2004-02-26 20:52                     ` Andi Kleen
2004-02-26 22:03                       ` Andi Kleen
2004-02-26 22:22                         ` David S. Miller

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