On 23/09/2019 08:27, 徐蕴 wrote:
Hi ceph experts,
I deployed Nautilus (v14.2.4) and Luminous (v12.2.11) on the same hardware, and
made a rough performance comparison. The result seems Luminous is much better,
which is unexpected.
My setup:
3 servers, each has 3 HDD OSDs, 1 SSD as DB, two separated 1G network for
cluster and public.
Pool test has 32 pg and pop numbers, replicated size is 3.
Using "rados -p bench 80 write” to measure write performance.
The result:
Luminous: Average IOPS 36
Nautilus: Average IOPS 28
Is the difference considered valid for Nautilus?
Br,
Xu Yun
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If you ran "rados -p bench 80 write”without specifying the block size -b
option, then you will be using default 4MB block sizes, at such sizes
you should be looking at Throughput MB/s rather than iops, the 28 iops x
4M will already saturate your 1G network.
/Maged
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