On Tue, Jul 5, 2016 at 10:04 AM, Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote: > On Tue, Jul 5, 2016 at 9:53 AM, Christian Balzer <chibi@xxxxxxx> wrote: >>> Unfamiliar: Samsung SM863 >>> >> You might want to read the thread here: >> http://lists.ceph.com/pipermail/ceph-users-ceph.com/2016-February/007871.html >> >> And google "ceph SM863". >> >> However I'm still waiting for somebody to confirm that these perform (as >> one would expect from DC level SSDs) at full speed with sync writes, which >> is the only important factor for journals. > > Tell me the fio options you're interested in and I'll run it right now. Using the options from Sebastien's blog I get: 1 job: write: io=5863.3MB, bw=100065KB/s, iops=25016, runt= 60001msec 5 jobs: write: io=11967MB, bw=204230KB/s, iops=51057, runt= 60001msec 10 jobs: write: io=13760MB, bw=234829KB/s, iops=58707, runt= 60001msec Drive is model MZ7KM240 with firmware GXM1003Q. -- Dan [1] fio --filename=/dev/sdc --direct=1 --sync=1 --rw=write --bs=4k --numjobs=1 --iodepth=1 --runtime=60 --time_based --group_reporting --name=journal-test _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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