.
Thanks!
Xavi.
De: Michal Kozanecki [mailto:michal.kozane...@live.ca]
Enviado el: sábado, 11 de marzo de 2017 1:36
Para: dilla...@redhat.com; Xavier Trilla
CC: ceph-users
Asunto: Re: [ceph-users] Posix AIO vs libaio read performance
Hi Xavier,
Are you sure this is due to CEPH? I get similar
De: Jason Dillaman [mailto:jdill...@redhat.com] Enviado el: viernes, 10 de
marzo de 2017 19:18
Para: Xavier Trilla
CC: Alexandre DERUMIER ; ceph-users
Asunto: Re: [ceph-users] Posix AIO vs libaio read performance
librbd doesn't know that you are using libaio vs POSIX AIO. Therefore, the b
--
De: Alexandre DERUMIER [mailto:aderum...@odiso.com]
Enviado el: sábado, 11 de marzo de 2017 7:25
Para: Xavier Trilla
CC: ceph-users
Asunto: Re: [ceph-users] Posix AIO vs libaio read performance
>>Regarding rbd cache, is something I will try -today I was thinking about it-
>>but
se of aio=threads with cache=writeback is enable,
but can use aio=native with cache=none.
- Mail original -
De: "Xavier Trilla"
À: "aderumier"
Cc: "ceph-users"
Envoyé: Vendredi 10 Mars 2017 14:12:59
Objet: Re: [ceph-users] Posix AIO vs libaio read performa
gt; OSDs.
> But so far performance of the OSDs is really good using other test
> engines, so I’m working more on the client side.
>
>
>
> Any help or information would be really welcome J
>
>
>
> Thanks.
>
> Xavier.
>
>
>
> De: ceph-users [mailto:ce
or information would be really welcome J
>
>
>
> Thanks.
>
> Xavier.
>
>
>
> De: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] En nombre de
> Xavier Trilla
> Enviado el: viernes, 10 de marzo de 2017 14:13
> Para: Alexandre DERUMIER
> CC: ceph-user
rilla
Enviado el: viernes, 10 de marzo de 2017 14:13
Para: Alexandre DERUMIER
CC: ceph-users
Asunto: Re: [ceph-users] Posix AIO vs libaio read performance
Hi Alexandre,
Debugging is disabled in client and osds.
Regarding rbd cache, is something I will try -today I was thinking about it-
but I d
ing iothread on qemu drive should help a little bit too.
- Mail original -
De: "Xavier Trilla"
mailto:xavier.tri...@silicontower.net>>
À: "ceph-users" mailto:ceph-users@lists.ceph.com>>
Envoyé: Vendredi 10 Mars 2017 05:37:01
Objet: Re: [ceph-users] Posix AIO vs l
05:37:01
Objet: Re: [ceph-users] Posix AIO vs libaio read performance
Hi,
We compiled Hammer .10 to use jemalloc and now the cluster performance improved
a lot, but POSIX AIO operations are still quite slower than libaio.
Now with a single thread read operations are about 1000 per second
Hi,
We compiled Hammer .10 to use jemalloc and now the cluster performance improved
a lot, but POSIX AIO operations are still quite slower than libaio.
Now with a single thread read operations are about 1000 per second and write
operations about 5000 per second.
Using same FIO configuration,
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