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Re: bad TSO performance in 2.6.9-rc2-BK

To: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Subject: Re: bad TSO performance in 2.6.9-rc2-BK
From: "David S. Miller" <davem@xxxxxxxxxxxxx>
Date: Mon, 27 Sep 2004 12:01:54 -0700
Cc: ak@xxxxxxx, niv@xxxxxxxxxx, andy.grover@xxxxxxxxx, anton@xxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <>
References: <> <> <> <> <>
Sender: netdev-bounce@xxxxxxxxxxx
On Mon, 27 Sep 2004 15:45:41 +1000
Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote:

> On Sun, Sep 26, 2004 at 09:00:29PM -0700, David S. Miller wrote:
> > 
> > The very next time we check to see if we can
> > make forward progress on the send queue we'll call tcp_current_mss()
> > which causes the right things to happen.
> tcp_current_mss() doesn't call tcp_sync_mss() unless the PMTU changes.

Good catch, probably we should make it do so when sk_route_caps
indicates we are doing TSO.

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