On Tue, 2017-02-21 at 21:04 +0100, Wido den Hollander wrote: > Hi, > > I'm about to start a test where I'll be putting a lot of objects into BlueStore and > see how it holds. > > The reasoning behind is that I have a customer which has 165M objects in it's cluster > which results in some PGs having 900k objects. > > For FileStore with XFS this is quite heavy. A simple scrub takes ages. > > The problem is that we can't simply increase the number of PGs since that will > overload the OSDs as well. Also the problem stands if have a huge amount _small_ objects: capacity of hardware is enough (20% used) but PG quantity isn't. > > On the other hand we could add hardware, but that also takes time. > > So just for the sake of testing I'm looking at trying to replicate this situation > using BlueStore from master. > > Is there anything I should take into account? I'll probably be just creating a lot > (millions) of 100 byte objects in the cluster with just a few PGs. > > Wido > -- > 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
