On Wed, Jun 15, 2011 at 11:40 AM, Peter Hallin <peter.hal...@ldc.lu.se> wrote: > It only got up to about 450 Mbit/s (standard TCP iperf test) and there > was an unbalance between ix0 and ix1 when it came to interrupts. ix1 > only got up to 4000 intr/s whereas ix1 got up to 13000 intr/s (when > monitoring live with systat vmstat). The CPU intr usage was around 50-60%.
Just out of curiosity, which iperf settings did you use? I know this is on a Linux box, but just out of interest, I get full speed there: iperf -c xxx.xxx.xxx.xxx -i 5 ------------------------------------------------------------ Client connecting to xxx.xxx.xxx.xxx, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 3] local xxx.xxx.xxx.xxx port 47035 connected with xxx.xxx.xxx.xxx port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 5.0 sec 5.47 GBytes 9.39 Gbits/sec [ 3] 0.0-10.0 sec 10.9 GBytes 9.40 Gbits/sec Cards are: Intel Corporation 82599EB 10-Gigabit SFI/SFP+ Network Connection (rev 01) driver: ixgbe version: 2.0.44-k2 firmware-version: 0.9-3 bus-info: 0000:05:00.0 Cheers, Steph
