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@xxxxxxxxxx> À: "Somnath Roy" <Somnath.Roy@xxxxxxxxxxx> Cc: "Samuel Just" <sjust@xxxxxxxxxx>, "ceph-devel" <ceph-devel@xxxxxxxxxxxxxxx> 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. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
