On 19/09/2016 21:06, Emilio G. Cota wrote:
> Let me then just point out that this comes at a small perf loss.
>
> Running 'taskset -c 0 tests/qht-bench -n 1 -d 10' (i.e. all lookups) 10 times,
> we get:
>
> before the patch:
> $ ./mean.pl 34.04 34.24 34.38 34.25 34.18 34.51 34.46 34.44 34.29
On Mon, Sep 19, 2016 at 20:37:06 +0200, Paolo Bonzini wrote:
> On 19/09/2016 20:06, Emilio G. Cota wrote:
> > On Mon, Sep 19, 2016 at 16:51:38 +0100, Alex Bennée wrote:
> >> > ThreadSanitizer detects a possible race between reading/writing the
> >> > hashes. As ordering semantics are already
On 19/09/2016 20:06, Emilio G. Cota wrote:
> On Mon, Sep 19, 2016 at 16:51:38 +0100, Alex Bennée wrote:
>> > ThreadSanitizer detects a possible race between reading/writing the
>> > hashes. As ordering semantics are already documented for qht we just
>> > need to ensure a race can't tear the
On Mon, Sep 19, 2016 at 16:51:38 +0100, Alex Bennée wrote:
> ThreadSanitizer detects a possible race between reading/writing the
> hashes. As ordering semantics are already documented for qht we just
> need to ensure a race can't tear the hash value so we can use the
> relaxed atomic_set/read
