You are correct, that is some important information. I am using the kernel
client. Mounts from fstab.
Please excuse any typos. Autocorrect is evil!
> On May 17, 2018, at 08:30, Dan van der Ster <d...@vanderster.com> wrote:
> It still isn't clear if you're using the fuse or kernel client.
> Do you `mount -t ceph` or something else?
> -- Dan
> On Wed, May 16, 2018 at 8:28 PM Donald "Mac" McCarthy <m...@synackintel.com>
>> CephFS. 8 core atom C2758, 16 GB ram, 256GB ssd, 2.5 GB NIC (supermicro
> microblade node).
>> Read test:
>> dd if=/ceph/1GB.test of=/dev/null bs=1M
>> dd if=/dev/zero of=/ceph/out.test bs=1M count=1024
>> The tests are identical on both kernels - the results... well that is a
> different story.
>> CEPH servers are on release 12.2.4
>> Client updated to 12.2.5 - in both kernels, ceph client is 12.2.5
>> Please excuse any typos. Autocorrect is evil!
>>> On May 16, 2018, at 14:18, Jason Dillaman <jdill...@redhat.com> wrote:
>>> What is your client (librbd, krbd, CephFS, ceph-client, ...) and how
>>> are you testing performance?
>>> On Wed, May 16, 2018 at 11:14 AM, Donald "Mac" McCarthy
>>> <m...@synackintel.com> wrote:
>>>> Recently upgraded a CEPH client to CentOS 7.5. Upon doing so read and
> write performance became intolerably slow. ~2.5 MB/s. When booted back to
> a CentOS 7.4 kernel, performance went back to a normal 200 MB/s read and
> write. I have not seen any mention of this issue in all of the normal
> places including here. For now the solution is clear - don’t use the 7.5
> update. Has anyone else experienced this issue?
>>>> Please excuse any typos. Autocorrect is evil!
>>>> ceph-users mailing list
>> ceph-users mailing list
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