Re: page table lock patch V15 [0/7]: overview

Christoph Hellwig
2005-01-12T17:41:01Z

On Wed, Jan 12, 2005 at 09:37:27AM -0800, Christoph Lameter wrote:
>
> The benefits start to be significant pretty fast with even a few cpus
> on modern architectures:
>
> Altix no patch:
> Gb Rep Threads User System Wall flt/cpu/s fault/wsec
> 1 10 1 0.107s 6.444s 6.055s100028.084 100006.622
> 1 10 2 0.121s 9.048s 4.082s 71468.414 135904.412
> 1 10 4 0.129s 10.185s 3.011s 63531.985 210146.600
>
> w/patch
> Gb Rep Threads User System Wall flt/cpu/s fault/wsec
> 1 10 1 0.094s 6.116s 6.021s105517.039 105517.574
> 1 10 2 0.134s 6.998s 3.087s 91879.573 169079.712
> 1 10 4 0.095s 7.658s 2.043s 84519.939 268955.165

These smaller systems are more likely x86/x86_64 machines ;-)