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Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000

To: Nivedita Singhvi <niv@xxxxxxxxxx>
Subject: Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000
From: Andi Kleen <ak@xxxxxxx>
Date: Fri, 6 Sep 2002 21:26:19 +0200
Cc: Andi Kleen <ak@xxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <1031339954.3d78ffb257d22@xxxxxxxxxxxxxxxxxx>
References: <3D78C9BD.5080905@xxxxxxxxxx> <53430559.1031304588@[10.10.2.3]> <3D78E7A5.7050306@xxxxxxxxxx> <20020906202646.A2185@xxxxxxxxxxxxx> <1031339954.3d78ffb257d22@xxxxxxxxxxxxxxxxxx>
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> If you just wanted to speed things up, you could get the
> clients to specify ports instead of letting the kernel
> cycle through for a free port..:)

Better would be probably to change the kernel to keep a limited
list of free ports in a free list. The grabbing a free port would
be an O(1) operation. 

I'm not entirely sure it is worth it in this case. The locks are
probably the majority of the cost.

-Andi


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