On Wed, Aug 12, 2015 at 5:33 AM, Hadi Montakhabi <[email protected]> wrote:
>
> [sequential read]
> readwrite=read
> size=2g
> directory=/mnt/mycephfs
> ioengine=libaio
> direct=1
> blocksize=${BLOCKSIZE}
> numjobs=1
> iodepth=1
> invalidate=1 # causes the kernel buffer and page cache to be invalidated
> #nrfiles=1
> [sequential write]
> readwrite=write # randread randwrite
> size=2g
> directory=/mnt/mycephfs
> ioengine=libaio
> direct=1
> blocksize=${BLOCKSIZE}
> numjobs=1
> iodepth=1
> invalidate=1
> [random read]
> readwrite=randread
> size=2g
> directory=/mnt/mycephfs
> ioengine=libaio
> direct=1
> blocksize=${BLOCKSIZE}
> numjobs=1
> iodepth=1
> invalidate=1
> [random write]
> readwrite=randwrite
> size=2g
> directory=/mnt/mycephfs
> ioengine=libaio
> direct=1
> blocksize=${BLOCKSIZE}
> numjobs=1
> iodepth=1
> invalidate=1
>
I just tried 4.2-rc kernel, everything went well. which version of kernel
were you using?
>
> On Sun, Aug 9, 2015 at 9:27 PM, Yan, Zheng <[email protected]> wrote:
>
>>
>> On Sun, Aug 9, 2015 at 8:57 AM, Hadi Montakhabi <[email protected]> wrote:
>>
>>> I am using fio.
>>> I use the kernel module to Mount CephFS.
>>>
>>
>> please send fio job file to us
>>
>>
>>
>>> On Aug 8, 2015 10:52 AM, "Ketor D" <[email protected]> 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 <[email protected]>
>>>> 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
>>>>>
>>>>> _______________________________________________
>>>>> ceph-users mailing list
>>>>> [email protected]
>>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>>>>
>>>>>
>>>>
>>> _______________________________________________
>>> ceph-users mailing list
>>> [email protected]
>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>>
>>>
>>
>
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