Thank you both for the tools an suggestions. I expected the response "there are many variables" but this gives me a place to start in determining what our configuration is capable of.
___ John Petrini NOC Systems Administrator // *CoreDial, LLC* // coredial.com // [image: Twitter] <https://twitter.com/coredial> [image: LinkedIn] <http://www.linkedin.com/company/99631> [image: Google Plus] <https://plus.google.com/104062177220750809525/posts> [image: Blog] <http://success.coredial.com/blog> Hillcrest I, 751 Arbor Way, Suite 150, Blue Bell PA, 19422 *P: *215.297.4400 x232 // *F: *215.297.4401 // *E: * jpetr...@coredial.com [image: Exceptional people. Proven Processes. Innovative Technology. Discover CoreDial - watch our video] <http://cta-redirect.hubspot.com/cta/redirect/210539/4c492538-6e4b-445e-9480-bef676787085> The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any computer. On Wed, Jan 4, 2017 at 11:58 AM, Maged Mokhtar <mmokh...@petasan.org> wrote: > > if you are asking about what tools to use: > http://tracker.ceph.com/projects/ceph/wiki/Benchmark_ > Ceph_Cluster_Performance > > You should run many concurrent processes on different clients > > > *From:* Maged Mokhtar <mmokh...@petasan.org> > *Sent:* Wednesday, January 04, 2017 6:45 PM > *To:* John Petrini <jpetr...@coredial.com> ; ceph-users > <ceph-users@lists.ceph.com> > *Subject:* Re: [ceph-users] Estimate Max IOPS of Cluster > > > Max iops depends on the hardware type/configuration for disks/cpu/network. > > For disks, the theoretical iops limit is > read = physical disk iops x number of disks > write (with journal on same disk) = physical disk iops x number of disks / > num of replicas / 3 > in practice real benchmarks will vary widely from this, I've seen numbers > from 30 to 80 % of theoretical value. > > When the number of disks/cpu cores is high, the cpu bottleneck kicks in, > again it depends on hardware but you could use a performance tool such as > atop to know when this happens on your setup. There is no theoretical > measure of this, but one good analysis i find is Nick Fisk: > http://www.sys-pro.co.uk/how-many-mhz-does-a-ceph-io-need/ > > > Cheers > /Maged > > *From:* John Petrini <jpetr...@coredial.com> > *Sent:* Tuesday, January 03, 2017 10:15 PM > *To:* ceph-users <ceph-users@lists.ceph.com> > *Subject:* [ceph-users] Estimate Max IOPS of Cluster > > Hello, > > Does any one have a reasonably accurate way to determine the max IOPS of a > Ceph cluster? > > Thank You, > > ___ > > John Petrini > > ------------------------------ > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > ------------------------------ > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
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