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Date: Sun, 22 Apr 2001 13:56:38 -0700
From: J Sloan <jjs@mirai.cx>
Organization: Mirai Consulting
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: linux-kernel <linux-kernel@vger.kernel.org>,
        "David S. Miller" <davem@redhat.com>
Subject: Re: performance degradation on -ac tree
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There is a bit more clarity on the performance degradation
issue now - In fact the degradation only appears when
using iptables. It's just that sometime shortly after 2.4.2,
the hit imposed by iptables got worse.

For instance:

netperf results  without iptables       with iptables
-----------------------------------------------------------------
2.4.2                 400 MB/s                      330 MB/s
2.4.3-ac10            400 MB/s                      250 MB/s


BTW, the stock seawolf kernel gets the highest netperf
results ever seen on this box, around 450 MB/sec,
but with iptables or ipchains module loaded, it falls to
about 270 MB/sec.

Just a data point fyi -

cu

jjs



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