Re: Ceph FS Random Write 4KB block size only 2MB/s?!

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On Wed, Jun 27, 2018 at 8:04 PM Yu Haiyang <haiyangy@xxxxxxx> wrote:
>
> Hi All,
>
> Using fio with job number ranging from 1 to 128, the random write speed for 4KB block size has been consistently around 1MB/s to 2MB/s.
> Random read of the same block size can reach 60MB/s with 32 jobs.

run fio on ceph-fuse? If I remember right, fio does 1 bytes write.
overhead of passing the 1 byte to ceph-fuse is too high.

>
> Our ceph cluster consists of 4 OSDs all running on SSD connected through a switch with 9.06 Gbits/sec bandwidth.
> Any suggestion please?
>
> Warmest Regards,
> Haiyang
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