Re: can't get linerate TCP iperf between two Intel PRO/1000 82544GC cards

2005-04-02 Thread Petri Helenius
Does somebody have the programming specs for the em chips? Despite of multiple contacts and promises Intel has been unable to produce them. Pete Chris Tracy wrote: Hi, I have been attempting to get iperf to generate a line-rate TCP flow (~989Mbps) across a GigE link but can only get a maximum of

can't get linerate TCP iperf between two Intel PRO/1000 82544GC cards

2005-04-02 Thread Chris Tracy
Hi, I have been attempting to get iperf to generate a line-rate TCP flow (~989Mbps) across a GigE link but can only get a maximum of around 912Mbps. The bottleneck appears to be on the sending side, as top shows the CPU for the iperf process at 50% (machine is a dual Xeon 2.4GHz with SMP and HTT en