Re: why TCP_STREAM test throughput can't reach the media speed for acenic gigabit ethernet card with normal

From: Shirley Ma (xma@us.ibm.com)
Date: Fri Aug 24 2001 - 17:27:41 EST

I think my real question was is there anyone has gotten media speed network
throughput on any Gigabit Ethernet Card with normal MTU?

Thanks
Shirley Ma
IBM Linux Technology Center

Shirley Ma/Beaverton/IBM@IBMUS@vger.kernel.org on 08/24/2001 11:16:12 AM

Sent by: linux-net-owner@vger.kernel.org

To: linux-net@vger.kernel.org
cc: Shirley Ma/Beaverton/IBM@IBMUS
Subject: why TCP_STREAM test throughput can't reach the media speed for
      acenic gigabit ethernet card with normal

Compared to jumbo frame MTU=9000 bytes, Acenic Gigabit Ethernet Card can
almost reach the media speed for TCP_STREAM throughput test; same test
result for nomal MTU=1500 bytes is about 650Mbits/s. The PACKET_STREAM test
result for MTU=1500bytes is pretty good too, it is around 900Mbits/s.
Theorically TCP_STREAM throughput test for MTU=1500 bytes should be above
900Mbits/s. Does anyone has any idea why not?

Thanks
Shirley Ma
IBM Linux Technology Center

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