Thanks a lot for the quick update Greg. This lead me to ask if there's
anything out there to improve performance in an Infiniband environment
with Ceph. In the cluster that I mentioned earlier. I've setup 4 OSD
server nodes nodes each with 8 OSD daemons running with 800x Intel SSD
DC S3710 disks (740.2G for OSD and 5G for Journal) and also using IB FDR
56Gb/s for the PUB and CLUS network, and I'm getting the following fio
numbers:
# fio --rw=randread --bs=1m --numjobs=4 --iodepth=32 --runtime=22
--time_based --size=16777216k --loops=1 --ioengine=libaio --direct=1
--invalidate=1 --fsync_on_close=1 --randrepeat=1 --norandommap
--group_reporting --exitall --name
dev-ceph-randread-1m-4thr-libaio-32iodepth-22sec --filename=/mnt/rbd/test1
dev-ceph-randread-1m-4thr-libaio-32iodepth-22sec: (g=0): rw=randread,
bs=1M-1M/1M-1M/1M-1M, ioengine=libaio, iodepth=32
...
dev-ceph-randread-1m-4thr-libaio-32iodepth-22sec: (g=0): rw=randread,
bs=1M-1M/1M-1M/1M-1M, ioengine=libaio, iodepth=32
fio-2.1.3
Starting 4 processes
dev-ceph-randread-1m-4thr-libaio-32iodepth-22sec: Laying out IO file(s)
(1 file(s) / 16384MB)
Jobs: 4 (f=4): [rrrr] [33.8% done] [1082MB/0KB/0KB /s] [1081/0/0 iops]
[eta 00m:45s]
dev-ceph-randread-1m-4thr-libaio-32iodepth-22sec: (groupid=0, jobs=4):
err= 0: pid=63852: Mon Nov 23 10:48:07 2015
read : io=21899MB, bw=988.23MB/s, iops=988, runt= 22160msec
slat (usec): min=192, max=186274, avg=3990.48, stdev=7533.77
clat (usec): min=10, max=808610, avg=125099.41, stdev=90717.56
lat (msec): min=6, max=809, avg=129.09, stdev=91.14
clat percentiles (msec):
| 1.00th=[ 27], 5.00th=[ 38], 10.00th=[ 45], 20.00th=[ 61],
| 30.00th=[ 74], 40.00th=[ 85], 50.00th=[ 100], 60.00th=[ 117],
| 70.00th=[ 141], 80.00th=[ 174], 90.00th=[ 235], 95.00th=[ 297],
| 99.00th=[ 482], 99.50th=[ 578], 99.90th=[ 717], 99.95th=[ 750],
| 99.99th=[ 775]
bw (KB /s): min=134691, max=335872, per=25.08%, avg=253748.08,
stdev=40454.88
lat (usec) : 20=0.01%
lat (msec) : 10=0.02%, 20=0.27%, 50=12.90%, 100=36.93%, 250=41.39%
lat (msec) : 500=7.59%, 750=0.84%, 1000=0.05%
cpu : usr=0.11%, sys=26.76%, ctx=39695, majf=0, minf=405
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.3%, 32=99.4%,
>=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%,
>=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%,
>=64=0.0%
issued : total=r=21899/w=0/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
READ: io=21899MB, aggrb=988.23MB/s, minb=988.23MB/s,
maxb=988.23MB/s, mint=22160msec, maxt=22160msec
Disk stats (read/write):
rbd1: ios=43736/163, merge=0/5, ticks=3189484/15276,
in_queue=3214988, util=99.78%
############################################################################################################################################################
# fio --rw=randread --bs=4m --numjobs=4 --iodepth=32 --runtime=22
--time_based --size=16777216k --loops=1 --ioengine=libaio --direct=1
--invalidate=1 --fsync_on_close=1 --randrepeat=1 --norandommap
--group_reporting --exitall --name
dev-ceph-randread-4m-4thr-libaio-32iodepth-22sec --filename=/mnt/rbd/test2
fio-2.1.3
Starting 4 processes
dev-ceph-randread-4m-4thr-libaio-32iodepth-22sec: Laying out IO file(s)
(1 file(s) / 16384MB)
Jobs: 4 (f=4): [rrrr] [28.7% done] [894.3MB/0KB/0KB /s] [223/0/0 iops]
[eta 00m:57s]
dev-ceph-randread-4m-4thr-libaio-32iodepth-22sec: (groupid=0, jobs=4):
err= 0: pid=64654: Mon Nov 23 10:51:58 2015
read : io=18952MB, bw=876868KB/s, iops=214, runt= 22132msec
slat (usec): min=518, max=81398, avg=18576.88, stdev=14840.55
clat (msec): min=90, max=1915, avg=570.37, stdev=166.51
lat (msec): min=123, max=1936, avg=588.95, stdev=169.19
clat percentiles (msec):
| 1.00th=[ 258], 5.00th=[ 343], 10.00th=[ 383], 20.00th=[ 437],
| 30.00th=[ 482], 40.00th=[ 519], 50.00th=[ 553], 60.00th=[ 594],
| 70.00th=[ 627], 80.00th=[ 685], 90.00th=[ 775], 95.00th=[ 865],
| 99.00th=[ 1057], 99.50th=[ 1156], 99.90th=[ 1680], 99.95th=[ 1860],
| 99.99th=[ 1909]
bw (KB /s): min= 5665, max=383251, per=24.61%, avg=215755.74,
stdev=61735.70
lat (msec) : 100=0.02%, 250=0.80%, 500=33.88%, 750=53.31%, 1000=10.26%
lat (msec) : 2000=1.73%
cpu : usr=0.07%, sys=12.52%, ctx=32466, majf=0, minf=372
IO depths : 1=0.1%, 2=0.2%, 4=0.3%, 8=0.7%, 16=1.4%, 32=97.4%,
>=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%,
>=64=0.0%
complete : 0=0.0%, 4=99.9%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%,
>=64=0.0%
issued : total=r=4738/w=0/d=0, short=r=0/w=0/d=0
Run status group 0 (all jobs):
READ: io=18952MB, aggrb=876868KB/s, minb=876868KB/s,
maxb=876868KB/s, mint=22132msec, maxt=22132msec
Disk stats (read/write):
rbd1: ios=37721/177, merge=0/5, ticks=3075924/11408,
in_queue=3097448, util=99.77%
Can anyone share some results from a similar environment?
Thanks in advance,
Best,
**
*German*
2015-11-23 13:08 GMT-03:00 Gregory Farnum <gfarnum@xxxxxxxxxx
<mailto:gfarnum@xxxxxxxxxx>>:
On Mon, Nov 23, 2015 at 10:05 AM, German Anders
<ganders@xxxxxxxxxxxx <mailto:ganders@xxxxxxxxxxxx>> wrote:
> Hi all,
>
> I want to know if there's any improvement or update regarding ceph 0.94.5
> with accelio, I've an already configured cluster (with no data on it) and I
> would like to know if there's a way to 'modify' the cluster in order to use
> accelio. Any info would be really appreciated.
The XioMessenger is still experimental. As far as I know it's not
expected to be stable any time soon and I can't imagine it will be
backported to Hammer even when done.
-Greg
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