Date: Tue, 14 Nov 2000 17:20:01 -0600 (CST) From: sanjeev singh <remraf@hobbiton.org> To: freebsd-questions@FreeBSD.ORG Subject: natd limiting download speed? Message-ID: <Pine.BSO.4.21.0011141717490.22743-100000@thorin>
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Hello, I recently set up an ipfw+natd machine (FreeBSD 3.5.1R) for sharing my = cable connection. Unfortunately, natd appears to be limiting the = maximum bandwidth available! Using netperf, I have established that I can get up to just under 4mbps = with natd enabled, and 4.3mbps with it disabled. This might not look = like a big deal, except that in the former case, my CPU is fully loaded = whereas in the latter it's only at 50%! Also, when testing high speed downloads (from netscape.com), I get the = following results: Download speed: ~350+KB/s CPU States: 50-60% system, ~35% interrupt and <10% idle natd takes up 80% of WCPU and CPU My firewall machine is a 486/66 (32MB Ram) with an NE2K and a Dec DE = 201. Are these results in the ballpark or could I have configured = something wrong? If these results are in the ballpark, what can I do to improve the = situation (short of upgrading my firewall machine)? Is there a more = CPU-efficient version of natd available? Should I try ipfilter/ipnat? Regards, Sanjeev Singh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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