On Wed 23-02-11 16:24:47, Alex,Shi wrote:The original drop is 30%.
Though these patches can not totally recovered the problem, but they areOK and what was the original performance drop with WRITE_SYNC change?
quite helpful with ccache enabled situation. It increase 10% performance
on 38-rc1 kernel.
I have tried to enabled they to latest rc6 kernel but failed. the vmstat output is here: with patches:I'm attaching patches rebased on top of latest Linus's tree. Corrado, could you possibly run your fsync-heavy tests so that we see
whether there isn't negative impact of my patches on your fsync-heavy