maria-developers team mailing list archive

[MARK CALLAGHAN <mdcallag@xxxxxxxxx>]

That is an excellent blog post


On Mon, Feb 24, 2014 at 6:22 AM, Sergey Vojtovich <svoj@xxxxxxxxxxx> wrote:

> Hi Axel,
>
> I benchmarked various mutexes available to MariaDB. Results are here:
> http://svoj-db.blogspot.ru/2014/02/mariadb-mutexes-scalability.html
>
> Among other things I noticed that normal mutexes scale better than
> adaptive.
> And it looks like it gives over 5 000 TPS in my benchmarks:
>
> Original
> --------
> 64 threads, time spent: 60s, queries executed: 11500723, qps: 191678, 1
> thread qps: 2994, tps: 13691
> 64 threads, time spent: 60s, queries executed: 10983665, qps: 183061, 1
> thread qps: 2860, tps: 13075
> 64 threads, time spent: 60s, queries executed: 11080325, qps: 184672, 1
> thread qps: 2885, tps: 13190
>
> slow LOCK_open
> --------------
> 64 threads, time spent: 60s, queries executed: 12948365, qps: 215806, 1
> thread qps: 3371, tps: 15414
> 64 threads, time spent: 60s, queries executed: 13191584, qps: 219859, 1
> thread qps: 3435, tps: 15704
> 64 threads, time spent: 60s, queries executed: 13050647, qps: 217510, 1
> thread qps: 3398, tps: 15536
>
> slow LOCK_open + THR_LOCK::mutex
> --------------------------------
> 64 threads, time spent: 60s, queries executed: 15863174, qps: 264386, 1
> thread qps: 4131, tps: 18884
> 64 threads, time spent: 60s, queries executed: 15761944, qps: 262699, 1
> thread qps: 4104, tps: 18764
> 64 threads, time spent: 60s, queries executed: 15773239, qps: 262887, 1
> thread qps: 4107, tps: 18777
>
> Could you do official benchmarks (patch attached)? It would be nice to also
> benchmark MySQL-5.6 with thr_lock part of the patch.
>
> Thanks,
> Sergey
>
> _______________________________________________
> Mailing list: https://launchpad.net/~maria-developers
> Post to     : maria-developers@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~maria-developers
> More help   : https://help.launchpad.net/ListHelp
>
>


-- 
Mark Callaghan
mdcallag@xxxxxxxxx