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Re: 2.4 tcp very slow under certain circumstances (Re: netdev issues (3

To: "David S. Miller" <davem@xxxxxxxxxx>
Subject: Re: 2.4 tcp very slow under certain circumstances (Re: netdev issues (3c905B))
From: Jordan Mendelson <jordy@xxxxxxxxxxx>
Date: Wed, 21 Feb 2001 16:10:37 -0800
Cc: ookhoi@xxxxxx, Vibol Hou <vibol@xxxxxxxx>, Linux-Kernel <linux-kernel@xxxxxxxxxxxxxxx>, sim@xxxxxxxxxxx, netdev@xxxxxxxxxxx
Organization: Napster, Inc.
References: <HDEBKHLDKIDOBMHPKDDKMEGDEFAA.vibol@xxxxxxxx> <20010221104723.C1714@humilis> <14995.40701.818777.181432@xxxxxxxxxxxxxxx> <3A9453F4.993A9A74@xxxxxxxxxxx> <14996.21701.542448.49413@xxxxxxxxxxxxxxx>
Sender: owner-netdev@xxxxxxxxxxx
"David S. Miller" wrote:
> 
> Jordan Mendelson writes:
>  > Now, if it didn't have the side effect of dropping packets left and
>  > right after ~4000 open connections (simultaneously), I could finally
>  > move our production system to 2.4.x.
> 
> There is no reason my patch should have this effect.

My guess is that the fast path prevented the need for looking up the
destination in some structure which is limited to ~4K entries (route
table?).


Jordan

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