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
