[ofa-general] performance and Kernel support

[H. N. HARAKE]

Rick,

I have dual core AMD opteron, the IB card are connected to 4X  
mellanox infiniscale 2400, I am running Sles 10. when i used to run  
the test without any message size (-m )
The SDP test didn't work for me I am try to figure out why also I had  
noproblem in loading sdp library.

I also changed the txqueuelen to 4096 the default was 128,

t1:~ # ifconfig ib0
ib0       Link encap:UNSPEC  HWaddr 80-00-04-04- 
FE-80-00-00-00-00-00-00-00-00-00-00
           inet addr:192.168.2.101  Bcast:192.168.2.255  Mask: 
255.255.255.0
           inet6 addr: fe80::202:c902:24:2909/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:65520  Metric:1
           RX packets:11673701 errors:0 dropped:0 overruns:0 frame:0
           TX packets:14069560 errors:0 dropped:5 overruns:0 carrier:0
           collisions:0 txqueuelen:4096
           RX bytes:59793476658 (57023.5 Mb)  TX bytes:192547529035  
(183627.6 Mb)


t1:~ # netperf -H 192.168.2.100 -c -C --
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to  
192.168.2.100 (192.168.2.100) port 0 AF_INET
Recv   Send    Send                          Utilization        
Service Demand
Socket Socket  Message  Elapsed              Send     Recv      
Send    Recv
Size   Size    Size     Time     Throughput  local    remote    
local   remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/ 
KB   us/KB

87380  16384  16384    10.00      3989.07   12.81    23.66    0.526    
0.972


adding the -m with 128K show a better results

netperf -H 192.168.2.100 -c -C -- -m 128K
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/ 
KB   us/KB
87380  16384 131072    10.00      4646.27   12.91    24.76    0.455    
0.873

in case of -m 1m the cpu util showed a real different in this case.

bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/ 
KB   us/KB
87380  16384 1048576    10.00      5796.64   21.91    31.91     
0.619   0.902


Thanks
H. N. Harake

On 11-Sep-2007, at 19:17, Rick Jones wrote:

> SDP