Date: Wed, 28 Nov 2001 00:41:18 -0700 From: Nate Williams <nate@yogotech.com> To: Greg Lehey <grog@lemis.com> Cc: developers@FreeBSD.org, FreeBSD Hackers <hackers@FreeBSD.org> Subject: Re: FreeBSD performing worse than Linux? Message-ID: <15364.38174.938500.946169@caddis.yogotech.com> In-Reply-To: <20011128153817.T61580@monorchid.lemis.com> References: <20011128153817.T61580@monorchid.lemis.com>
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> I've just been talking with a friend of mine from the Samba team. > He's about to change jobs, and a lot of his work in future will > involve FreeBSD. He's just been doing some performance testing, and > while the numbers are pretty even (since he discovered soft updates > :-), he's noticing some significant performance differences, > particularly on the TCP/IP area. FWIW, I'm seeing this as well. However, this appears to be a new occurance, as we were using a FreeBSD 3.X system for our reference test platform. I recently updated it to FreeBSD 4.4-RELEASE, and I'm getting nothing but complaints about broken connections, poor performance, and very inconsistent results. They are now considering installing Linux on this box with the hope that they can get consistent results. (Unfortunately, FreeBSD 3.X is out because I convinced them that we needed to upgrade to 4.X due to security measures, so we can't go back.) Note, some of the performance issues were made better by disabling the TCP newreno implementation, but it's still poor and very inconsistent for hosts not on the local network, while the Linux box next to it gets much more consistent results. I know my lack of information isn't helping much, and that I've not done much to help debug the problem. However, all my attempts to track down what is causing this from a high-level (w/out digging into the code itself and analyzing tcpdump output) have come up empty. Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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