In the last episode (Mar 25), Kenneth Culver said: > I recently did a short file transfer over gigabit ethernet in both > x86 and amd64. On x86 it appears the limiting factor is the laptop > I'm transferring to. I get about 20MB/sec to the laptop in x86. But > on amd64, I'm not sure what the limiting factor is, because I max out > at about 2.8MB/sec with the EXACT same hardware. Here are the dmesg > lines for that ethernet card: Make sure you're testing ethernet speeds and not disk speeds; try something like ttcp or tcpblast. Even a pII/600mhz can do 50MB/sec; any modern CPU should be able to do 90. You might also want to do a long test, then run systat -v to see if the CPU load or interrupts/sec is different between x86 and amd64 modes. -- Dan Nelson dnelson_at_allantgroup.comReceived on Fri Mar 26 2004 - 06:35:50 UTC
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