I am using fio.
I use the kernel module to Mount CephFS.
On Aug 8, 2015 10:52 AM, "Ketor D" <d.ketor@xxxxxxxxx> wrote:
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 <hadi@xxxxxxxxx> 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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