Netpref results on SMP machine

[Ivan Voras]

kumaresh pandian wrote:

Single:
>   TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to localhost (::1) port 0 AF_INET6
>    65536       32768            32768         126001.95      2989.35
>    

Dual:
>   TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to localhost (::1) port 0 AF_INET6
>    65536      32768          32768                125998.03   2672.19

I'm not an expert but maybe::
- you're testing IPv6 intentionally? AFAIK it's not been converted for 
MPSAFE (SMP)?
- you're testing localhost intentionally? Also AFAIK, something similar 
(too coarse locking?) is true for localhost and many benchmarks show it.

You'll probably need to test over real hardware to get gains for SMP.

Of course, I'll be happy to be corrected by someone who works with these 
systems :)