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

Kris Kennaway kris at FreeBSD.org
Tue Nov 20 13:13:32 PST 2007

Bob Bishop wrote:
> Hi,
> FWIW, we are seeing 2 x quad-core 2.66GHz outperform (per core) 2 x 
> dual-core 3GHz on the same type of m/b, apparently because of better 
> bandwidth to memory. However, this is on a compute-intensive workload 
> running 1 job per core so would be pretty insensitive to 
> scheduler/locking issues.

Alexey's problem is pretty specific to filesystem performance.  Good to 
hear though :)


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