You will want to increase your readahead setting, but please see the recent thread regarding this, as readahead has effectively been rendered useless for the last couple of years. You may also be able to tune the librbd readahead settings, but it would make more sense to do it in the VM if it is an isolated requirement. > -----Original Message----- > From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of > Martin Bureau > Sent: 05 October 2015 17:15 > To: ceph-users@xxxxxxxx > Subject: Read performance in VMs > > Hello, > > Is there a way to improve sequentials reads in a VM ? My understanding is > that a read will be served from a single osd at a time, so it can't be faster than > the drive that osd in running on. Is that correct ? Is there any ways to > improve this ? > > Thanks for any answers, > Martin > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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