[Single OSD performance on SSD] Can't go over 3, 2K IOPS

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On 29/08/14 14:06, Mark Kirkwood wrote:

>
> ... mounting (xfs) with nobarrier seems to get
> much better results. The run below is for a single osd on an xfs
> partition from an Intel 520. I'm using another 520 as a journal:
>

...and adding

filestore_queue_max_ops = 20000

improved IOPS a bit more:

   write: io=1024.0MB, bw=30647KB/s, iops=7661, runt= 34215msec

I neglected to include my ceph.conf:

[global]
fsid = 7814a4ce-09d9-47bb-9e68-d914750395cc
mon_initial_members = vedavec
mon_host = 192.168.2.63

debug_lockdep = 0/0
debug_context = 0/0
debug_crush = 0/0
debug_buffer = 0/0
debug_timer = 0/0
debug_filer = 0/0
debug_objecter = 0/0
debug_rados = 0/0
debug_rbd = 0/0
debug_journaler = 0/0
debug_objectcatcher = 0/0
debug_client = 0/0
debug_osd = 0/0
debug_optracker = 0/0
debug_objclass = 0/0
debug_filestore = 0/0
debug_journal = 0/0
debug_ms = 0/0
debug_monc = 0/0
debug_tp = 0/0
debug_auth = 0/0
debug_finisher = 0/0
debug_heartbeatmap = 0/0
debug_perfcounter = 0/0
debug_asok = 0/0
debug_throttle = 0/0
debug_mon = 0/0
debug_paxos = 0/0
debug_rgw = 0/0

filestore_xattr_use_omap = true
filestore max sync interval = 20
filestore_queue_max_ops = 20000
osd pool default size = 1
[osd]
osd journal size = 14336
;osd_op_complatint_time = 10
;osd_op_threads = 4



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