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Date: Fri, 09 May 2008 15:07:56 -0700 (PDT) From: David Miller <davem@...emloft.net> To: jesper@...gh.cc Cc: yhlu.kernel@...il.com, linux-kernel@...r.kernel.org, netdev@...r.kernel.org Subject: Re: NIU - Sun Neptune 10g - Transmit timed out reset (2.6.24) From: Jesper Krogh <jesper@...gh.cc> Date: Fri, 09 May 2008 23:59:18 +0200 > David Miller wrote: > > From: Jesper Krogh <jesper@...gh.cc> > > Date: Fri, 09 May 2008 20:32:53 +0200 > > > >> When it works I doesnt seem to be able to get it pass 500MB/s. > > > > With this card you really need multiple cpus and multiple threads > > sending data through the card in order to fill the 10Gb pipe. > > > > Single connections will not fill the pipe. > > The server is a Sun X4600 with 8 x dual-core CPU's, setup with 64 > NFS-threads. The other end of the fiber goes into a switch with gigabit > ports connected to 48 dual-core cpus. The test was done doing a dd on a > 4.5GB file from the server to /dev/null on the clients. A single file transfer will not fill the pipe using this card, no matter how many cpus you have :-) The card is designed such that multiple parallel data streams over different connections result in the greatest throughput. > Should this setup not be able to fill the pipe? Nope, not with this card. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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