Benchmarks: AMD64 vs i386 on Dual 246 Opteron

David Xu davidxu at
Sat Aug 6 23:53:05 GMT 2005

David Xu wrote:

> Peter Wemm wrote:
>> Mysql could also easily be affected by inefficiencies in the amd64
>> pthread libraries too.
> libthr on -CURRENT is very similar with Linux NPTL,  think of NPTL's
> throughput, the inefficiencies might be in our kernel.  Also the 
> bottleneck in
> userland might be malloc which does belongs to thread library,

sorry for typo, malloc is in libc.

> Linux has
> ptmalloc which is thread friendly.

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