I did test my drives, intel nvmes are capable of something like 95100 single thread iops.
10 марта 2019 г. 1:31:15 GMT+03:00, Martin Verges <martin.verges@xxxxxxxx> пишет:
Hello,did you test the performance of your individual drives?Here is a small snippet:-----------------DRIVE=/dev/XXXsmartctl --a $DRIVEfor i in 1 2 4 8 16; do echo "Test $i"; fio --filename=$DRIVE --direct=1 --sync=1 --rw=write --bs=4k --numjobs=$i --iodepth=1 --runtime=60 --time_based --group_reporting --name=journal-test; done-----------------
Please share the results that we know what's possible with your hardware.--
Martin Verges
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YouTube: https://goo.gl/PGE1BxVitaliy Filippov <vitalif@xxxxxxxxxx> schrieb am Sa., 9. März 2019, 21:09:There are 2:
fio -ioengine=rbd -direct=1 -name=test -bs=4k -iodepth=1 -rw=randwrite
-pool=bench -rbdname=testimg
fio -ioengine=rbd -direct=1 -name=test -bs=4k -iodepth=128 -rw=randwrite
-pool=bench -rbdname=testimg
The first measures your min possible latency - it does not scale with the
number of OSDs at all, but it's usually what real applications like DBMSes
need.
The second measures your max possible random write throughput which you
probably won't be able to utilize if you don't have enough VMs all writing
in parallel.
--
With best regards,
Vitaliy Filippov
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--
With best regards,
Vitaliy Filippov
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