Is it a question to me or Victor? :-)
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.ver...@croit.io>
пишет:
>Hello,
>
>did you test the performance of your individual drives?
>
>Here is a small snippet:
>-----------------
>DRIVE=/dev/XXX
>smartctl --a $DRIVE
>for 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
>Managing director
>
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>
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>Vitaliy Filippov <vita...@yourcmc.ru> 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
>> _______________________________________________
>> ceph-users mailing list
>> ceph-users@lists.ceph.com
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>
--
With best regards,
Vitaliy Filippov
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