Hello, I might be hit by the same bug. After upgrading from octopus to pacific my cluster is slower by around 2-3times. I will try 16.2.6 when is out On Fri, Sep 10, 2021 at 6:58 PM Igor Fedotov <ifedotov@xxxxxxx> wrote: > Hi Luis, > > some chances that you're hit by https://tracker.ceph.com/issues/52089. > What is your physical DB volume configuration - are there fast > standalone disks for that? If so are they showing high utilization > during the benchmark? > > It makes sense to try 16.2.6 once available - would the problem go away? > > > Thanks, > > Igor > > > On 9/5/2021 8:45 PM, Luis Domingues wrote: > > Hello, > > > > I run a test cluster of 3 machines with 24 HDDs each, running bare-metal > on CentOS 8. Long story short, I can have a bandwidth of ~ 1'200 MB/s when > I do a rados bench, writing objects of 128k, when the cluster is installed > with Nautilus. > > > > When I upgrade the cluster to Pacific, (using ceph-ansible to deploy > and/or upgrade), my performances drop to ~400 MB/s of bandwidth doing the > same rados bench. > > > > I am kind of clueless on what makes the performance drop so much. Does > someone have some ideas where I can dig to find the root of this difference? > > > > Thanks, > > Luis Domingues > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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