| commit | e1bb57826381199cc79fbf44e9dfeee58fc7b339 | [log] [tgz] |
|---|---|---|
| author | Nick Piggin <npiggin@kernel.dk> | Fri Jan 07 17:50:08 2011 +1100 |
| committer | Nick Piggin <npiggin@kernel.dk> | Fri Jan 07 17:50:32 2011 +1100 |
| tree | b2f5edeebc568c3fff4afd799801e9e605b99efc | |
| parent | 4b936885ab04dc6e0bb0ef35e0e23c1a7364d9e5 [diff] |
fs: prefetch inode data in dcache lookup This makes single threaded git diff -1.25% +/- 0.05% elapsed time on my 2s12c24t Westmere system, and -0.86% +/- 0.05% on my 2s8c Barcelona, by prefetching the important first cacheline of the inode in while we do the actual name compare and other operations on the dentry. There was no measurable slowdown in the single file stat case, or the creat case (where negative dentries would be common). Signed-off-by: Nick Piggin <npiggin@kernel.dk>