Hi Haidi,
Which bench tool do you use? And how you mount CephFS, ceph-fuse or
kernel-cephfs?
On Fri, Aug 7, 2015 at 11:50 PM, Hadi Montakhabi <h...@cs.uh.edu> wrote:
> Hello Cephers,
>
> I am benchmarking CephFS. In one of my experiments, I change the object
> size.
> I start from 64kb. Everytime I do different block size reads and writes.
> By increasing the object size to 64MB and increasing the block size to
> 64MB, CephFS crashes (shown in the chart below). What I mean by crash is
> when I do "ceph -s" or "ceph -w" it gets into constantly reporting me
> reads, but it never finishes the operation (even after a few days!).
> I have repeated this experiment for different underlying file systems (xfs
> and btrfs), and the same thing happens in both cases.
> What could be the reason for crashing CephFS? Is there a limit for object
> size in CephFS?
>
> Thank you,
> Hadi
>
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