Attached file contains scripts for running tests and parsing results : (See attached file: scripts.tar)
The result of a 10 run (average) TCP iperf (and 1 netperf for UDP) is
given below.
Thanks,
- KK
-----------------------------------------------------------------------------
Test configuration : Single cross-over cable for MTHCA cards (MT23108) on
two PPC64 systems, both systems are 8-CPU P5 1.5 GHz processors with 8HB memory.
A. TCP results for a 10 run average are as follows (using iperf, could not
run netperf in parallel as it is not synchronized):
First number : Orig BW in KB/s.
Second number : New BW in KB/s.
Third number : Percentage change.
IPoIB was configured with 512 sendq size while default configuration (128)
gave positives for most test cases but more negatives for 512 and 4K buffer
sizes.
Buffer Size 32
TCP Threads:1 : 3126 3169 1.4
TCP Threads:4 : 9739 10889 11.8
TCP Threads:16 : 35383 47218 33.4
TCP Threads:64 : 85147 84196 -1.1
Average : 9.05%
TCP No Delay: Threads:1 : 1990 2976 49.5
TCP No Delay: Threads:4 : 8137 8770 7.7
TCP No Delay: Threads:16 : 31714 37308 17.63
TCP No Delay: Threads:64 : 72830 81892 12.44
Average : 14.19%
Buffer Size 128
TCP Threads:1 : 12674 13339 5.2
TCP Threads:4 : 37889 40816 7.7
TCP Threads:16 : 141342 165935 17.3
TCP Threads:64 : 199813 196283 -1.7
Average : 6.29%
TCP No Delay: Threads:1 : 7732 11272 45.7
TCP No Delay: Threads:4 : 33348 35222 5.6
TCP No Delay: Threads:16 : 120507 143960 19.5
TCP No Delay: Threads:64 : 195459 193875 -0.8
Average : 7.64%
Buffer Size 512
TCP Threads:1 : 42256 55735 31.9
TCP Threads:4 : 161237 161777 0.3
TCP Threads:16 : 227911 231781 1.7
TCP Threads:64 : 229779 223152 -2.9
Average : 1.70%
TCP No Delay: Threads:1 : 30065 42500 41.3
TCP No Delay: Threads:4 : 79076 125848 59.1
TCP No Delay: Threads:16 : 225725 224155 -0.7
TCP No Delay: Threads:64 : 231220 223664 -3.26
Average : 8.84%
Buffer Size 4096
TCP Threads:1 : 119364 135445 13.5
TCP Threads:4 : 261301 256754 -1.7
TCP Threads:16 : 246889 247065 0.07
TCP Threads:64 : 237613 234185 -1.4
Average : 0.95%
TCP No Delay: Threads:1 : 102187 104087 1.9
TCP No Delay: Threads:4 : 204139 243169 19.1
TCP No Delay: Threads:16 : 245529 242519 -1.2
TCP No Delay: Threads:64 : 236826 233382 -1.4
Average : 4.37%
-----------------------------------------------------------------------------
B. Using netperf to run 1 process UDP (1 run, measured with 128 sendq
size, will be re-doing with 512 sendq and for 10 runs average) :
----------------------------------------------------------
Org New Perc
BW Service BW Service BW Service
----------------------------------------------------------
6.40 1277.64 6.50 1272.41 1.56 -.40
24.80 663.01 25.80 318.13 4.03 -52.01
101.80 81.02 101.90 80.63 .09 -.48
395.70 20.77 395.90 20.74 .05 -.14
1172.90 7.00 1156.80 7.10 -1.37 1.42
---------------------------------------------------------------------
scripts.tar
Description: Binary data
