quoted

Umm, 0.4 to 0.8 seconds is on average _slower_ than 0.44 seconds.  Did you
mean .04 to .08?

Yes noticed that too -- i think it must have been .04-.08 and the zeros
got lost somewhere. I remember that it was significantly faster. It's really 
a benchmark how fast an read lock aquire/release is, but even on 
the best systems it's quite slow compared to lockless code.

FWIW I redid the benchmarks now and it's 0.046s (without) to 0.005s (with 
patch) on a different 2GB Core2 system with nearly empty hash table.

-Andi

-- 
ak@linux.intel.com