Jeff Garzik wrote:
> On Sun, Mar 06, 2005 at 07:06:23PM +0000, Baruch Even wrote:
> 
>>I'm running a test of iperf with a window of 16MB, at first the 
>>performance shows about 3.2Gbps rate (which sucks by itself, but that's 
>>another issue), after some time, usually 30-40 seconds, but sometimes 
>>100 seconds, the performance drops to almost nothing, about 60Kbps.
> 
> If you could get sysrq-p and sysrq-t output, that would be useful.

Attached. sysrq-p seems to be empty though.
sysrq.log is from s1 - sender
sysrq2.log is from s2 - receiver

> Also, check and see what your CPU load is, at the time.

It goes from 60% system to 0% system when the problem appears. user is 
around 2-3% most of the time, it's just iperf generating packets.

Baruch