Date: Tue, 16 Sep 2008 20:27:21 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Jian Qiu <swordqiu@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: What's the status of parallel netisr? Message-ID: <48D00899.4070908@FreeBSD.org> In-Reply-To: <e8520310809160743v46b5cf18jd78f6043eaeccaa3@mail.gmail.com> References: <e8520310809151020j29b8870v3167cb2879e8543d@mail.gmail.com> <48CF6450.6020909@FreeBSD.org> <e8520310809160743v46b5cf18jd78f6043eaeccaa3@mail.gmail.com>
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Jian Qiu wrote: > Interesting. > > I did a test on local UDP throughput. > > I was surprised to find out the performance with a SMP kernel was > worse than UP. (~74MB/s v.s. 96 MB/s). > > I had though parallel netisr might be a solution. Make sure you are testing with either 8.0 or 7.1 (or late 7.0-STABLE), i.e. after the fixes to improve UDP performance on SMP systems. Kris
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