2 x quad-core system is slower that 2 x dual core on FreeBSD

[Ivan Voras]

Krassimir Slavchev wrote:

> There is another report for such problems:
> 
> http://blog.insidesystems.net/articles/2007/04/09/what-did-i-do-wrong

Of course - FreeBSD 6.x is really bad at SMP where number of CPUs is
larger then about 2 and the loads include much kernel work (e.g. IO,
context switches). Numeric tasks (SSL) don't depend on the kernel and so
they scale ok. See
http://people.freebsd.org/~kris/scaling/Scalability%20Update.pdf for
details.

Another issue is interesting in this thread: that apparently 7.0 also
has a well defined workload where it fails.