On 1/13/20 6:37 PM, vita...@yourcmc.ru wrote:
>> Hi,
>>
>> we're playing around with ceph but are not quite happy with the IOs.
>> on average 5000 iops / write
>> on average 13000 iops / read
>>
>> We're expecting more. :( any ideas or is that all we can expect?
>
> With server SSD you can expect up to ~10000 write / ~25000 read iops per
> a single client.
>
> https://yourcmc.ru/wiki/Ceph_performance
>
>> money is NOT a problem for this test-bed, any ideas howto gain more
>> IOS is greatly appreciated.
>
> Grab some server NVMes and best possible CPUs :)
And then:
- Disable all powersaving
- Pin the CPUs in C-State 1
That might even increase performance even more. But due to the
synchronous nature of Ceph the performance and latency of a single
thread will be limited.
Wido
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