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

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On Thu, Jun 28, 2018 at 10:30 AM Yu Haiyang <haiyangy@xxxxxxx> wrote:
>
> Hi Yan,
>
> Thanks for your suggestion.
> No, I didn’t run fio on ceph-fuse. I mounted my Ceph FS in kernel mode.
>

command option of fio ?

> Regards,
> Haiyang
>
> > On Jun 27, 2018, at 9:45 PM, Yan, Zheng <ukernel@xxxxxxxxx> wrote:
> >
> > 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
> >> _______________________________________________
> >> ceph-users mailing list
> >> ceph-users@xxxxxxxxxxxxxx
> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
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