Re: [Qemu-devel] [RFC PATCH] qht: Align sequence lock to cache line

[Pranith Kumar]

On Tue, Oct 25, 2016 at 4:02 PM, Paolo Bonzini <address@hidden> wrote:
>
>
>> I've written a patch (see below) to take the per-bucket sequence locks.
>
> What's the performance like?
>

Applying only this patch, the perf numbers are similar to the 128
cache line alignment you suggested.

0 4
10 9.70
20 8.09
30 7.13
40 6.49

I am not sure why only 100% reader case is so low. Applying the
sequence lock cache alignment patch brings it back up to 13
MT/s/thread.

-- 
Pranith