2013/5/30 Maxime Ripard <maxime.rip...@free-electrons.com>: > > Did you look at the load while iperf was running? I guess we can expect > it to be pretty high since it runs without DMA.
I just did the test. cpu is at 55%-60% root@debian:~# date ; iperf -c 192.168.1.10 -t 300 ; cat /proc/loadavg Thu May 30 17:43:13 UTC 2013 ------------------------------------------------------------ Client connecting to 192.168.1.10, TCP port 5001 TCP window size: 20.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.1.235 port 45459 connected with 192.168.1.10 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-300.0 sec 3.28 GBytes 94.0 Mbits/sec 0.83 0.71 0.43 1/46 1770 loadavg over a 5min at 0.71, yeah, that's pretty high... Richard. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/