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SubjectRe: [PATCH][2.6] Completely out of line spinlocks / x86_64
On Mon, Aug 09, 2004 at 08:49:12AM -0300, Marcelo Tosatti wrote:
>
> Hi Zwane,
>
> Just seen your bonnie++ results (should have the whole thread before replying),
> looks great, except a slight reduction in sequential output:
>
> out-of-line spinlocks:
> Version @version@ ------Sequential Output------ --Sequential Input- --Random-
> -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
> stp2-000 2G 7018 99 64560 36 21694 16 6789 97 43729 14 340.6 1
> stp2-000 2G 7055 99 64836 39 21899 16 6752 97 44827 17 330.8 2
> stp2-000 2G 7023 99 64525 38 22987 17 6704 96 44777 14 337.3 1
>
> mainline:
> Version @version@ ------Sequential Output------ --Sequential Input- --Random-
> -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
> stp2-000 2G 7048 99 64912 38 22510 17 6732 96 43900 14 332.0 1
> stp2-000 2G 7018 99 63821 39 21732 16 6787 97 44889 17 326.7 2
> stp2-000 2G 7063 99 63834 38 22361 17 6738 97 43310 14 338.3 1
> ------Sequential Create------ --------Random Create--------
>
> Probably just noise, still I think its worth mentioning.

That really does look like noise here, though this is probably not the
ideal benchmark test. My hope is that we can stick this in -mm for a
bit and get some wider benchmarking of it (hence the config option).

--
Mathematics is the supreme nostalgia of our time.
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