[ceph-users] Performance, and how much wiggle room there is with tunables
rstanford8896 at gmail.com
Fri Nov 10 08:10:24 PST 2017
The bandwidth of the network is much higher than that. The bandwidth I
mentioned came from "rados bench" output, under the "Bandwidth (MB/sec)"
row. I see from comparing mine to others online that mine is pretty good
(relatively). But I'd like to get much more than that.
Does "rados bench" show a near maximum of what a cluster can do? Or is it
possible that I can tune it to get more bandwidth?
On Fri, Nov 10, 2017 at 3:43 AM, John Spray <jspray at redhat.com> wrote:
> On Fri, Nov 10, 2017 at 4:29 AM, Robert Stanford
> <rstanford8896 at gmail.com> wrote:
> > In my cluster, rados bench shows about 1GB/s bandwidth. I've done some
> > tuning:
> > [osd]
> > osd op threads = 8
> > osd disk threads = 4
> > osd recovery max active = 7
> > I was hoping to get much better bandwidth. My network can handle it,
> and my
> > disks are pretty fast as well. Are there any major tunables I can play
> > to increase what will be reported by "rados bench"? Am I pretty much
> > around the bandwidth it reported?
> Are you sure your 1GB/s isn't just the NIC bandwidth limit of the
> client you're running rados bench from?
> > Thank you
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users at lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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