10G network netperf performance (ix)

[Dongsheng Song]

On Thu, Mar 13, 2014 at 9:26 PM, Sepherosa Ziehau <sepherosa at gmail.com> wrote:
>
> Hi all,
>
> Following stats are for folks interested in DragonFly's TCP netperf
> performance on 10G network (as of 9f1b012):
>
> Testing system hardware:
> Host: i7-3770 w/ hyperthreading enabled, dual channel DDR3-1600 memory (8GB x 2)
> NIC: Intel 82599ES (connected w/ Intel XDACBL1M direct attach cable)
>
> TSO burst size is default to 12000B for DragonFly's ix.
>
> +-------+              +-------+
> |       |              |       |
> |       | ix0 ---- ix0 |       |
> |   A   |              |   B   |
> |       | ix1 ---- ix1 |       |
> |       |              |       |
> +-------+              +-------+
>
> B runs 'netserver -N'
>
> 1) TCP_STREAM (total 18840Mbps, 2 ports, 5 run average):
>
>    tcp_stream -H B0 -i 64 -l 60 &
>    tcp_stream -H B1 -i 64 -l 60
>
>    The above commands starts 128 netperf TCP_STREAM tests to B0 and B1.
>
>    The results:
>    ~9424Mbps on for each set of test, i.e. total 18840Mbps (5 run average).
>    Jain's fairness index for each set of test > 0.85 (1.0 is the best).
>
>    CPU usage statistics:
>    On TX side (A): ~25% sys, ~2% user, ~7% intr.  Almost no contention.
>    On RX side (B): ~35% sys, ~3% user, ~10% intr.  Mainly contended on rcvtok.
>    Interrupt rate is ~16000 on each CPU (interrupt moderation is
> default to 8000hz for DragonFly's ix)
>
> 2) TCP_STREAM + TCP_MAERTS (total 37279Mbps, 2 ports, 5 run average):
>
>    tcp_stream -H B0 -i 32 -l 60 &
>    tcp_stream -H B1 -i 32 -l 60 &
>    tcp_stream -H B0 -i 32 -l 60 -r &
>    tcp_stream -H B1 -i 32 -l 60 -r
>
>    The above commands starts 64 netperf TCP_STREAM and 64 TCP_MAERTS
> tests to B0 and B1.
>
>    The results:
>    ~9220Mbps - ~9400Mbps for each set of test, i.e. total 37279Mbps (5
> runs average)
>    Jain's fairness index for each set of test > 0.80 (1.0 is the best).
>
>    CPU usage statistics:
>    ~75% sys, ~4% user, ~20% intr.  Mainly contended on rcvtok.  The
> tests are CPU limited.  System is still responsive during the test.
>    Interrupt rate is ~16000 on each CPU (interrupt moderation is
> default to 8000hz for DragonFly's ix)
>
> Best Regards,
> sephe
>
> --
> Tomorrow Will Never Die

Thanks, could you post TCP_RR data ?