From: Alexandre DERUMIER <aderumier@odiso.com>
To: dillaman@redhat.com
Cc: Somnath Roy <Somnath.Roy@sandisk.com>,
Samuel Just <sjust@redhat.com>,
ceph-devel <ceph-devel@vger.kernel.org>
Subject: Re: Severe performance degradation with jewel rbd image
Date: Sat, 28 May 2016 09:29:15 +0200 (CEST) [thread overview]
Message-ID: <417572431.751254216.1464420555984.JavaMail.zimbra@oxygem.tv> (raw)
In-Reply-To: <CA+aFP1CqwRC8-EqPb0vTktQG0XViS8NO5TUg6BG9z0ooDPgbbw@mail.gmail.com>
Hi,
qemu should have soon multithreaded disk access support (multi queues + multi iothreads)
https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg05023.html
Do you think it'll work with exclusive-lock ?
----- Mail original -----
De: "Jason Dillaman" <jdillama@redhat.com>
À: "Somnath Roy" <Somnath.Roy@sandisk.com>
Cc: "Samuel Just" <sjust@redhat.com>, "ceph-devel" <ceph-devel@vger.kernel.org>
Envoyé: Jeudi 26 Mai 2016 20:52:26
Objet: Re: Severe performance degradation with jewel rbd image
You can dynamically enable/disable exclusive-lock, object-map,
fast-diff, and journaling after the image is created via "rbd feature
disable <image-spec> <feature>". The deep-flatten feature can be
disabled-only via the same CLI.
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next prev parent reply other threads:[~2016-05-28 7:29 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-25 20:48 Severe performance degradation with jewel rbd image Somnath Roy
2016-05-25 22:47 ` Jason Dillaman
2016-05-25 23:08 ` Somnath Roy
2016-05-26 0:50 ` Jason Dillaman
2016-05-26 3:39 ` Somnath Roy
2016-05-26 3:52 ` Jason Dillaman
2016-05-26 4:19 ` Somnath Roy
2016-05-26 13:28 ` Jason Dillaman
2016-05-26 17:47 ` Somnath Roy
2016-05-26 18:02 ` Samuel Just
2016-05-26 18:17 ` Jason Dillaman
2016-05-26 18:49 ` Somnath Roy
2016-05-26 18:52 ` Jason Dillaman
2016-05-28 7:29 ` Alexandre DERUMIER [this message]
2016-05-28 16:23 ` Somnath Roy
2016-05-31 19:57 ` Jason Dillaman
2016-06-01 6:58 ` Alexandre DERUMIER
2016-05-26 2:01 ` Haomai Wang
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