Hi Mosharaf,

If you undo the read balancing commands (using the command 'ceph
osd rm-pg-upmap-primary' on all pgs in the pool) do you see improvements in
the performance?

Regards,

Josh


On Thu, Sep 14, 2023 at 12:35 AM Laura Flores <lflo...@redhat.com> wrote:

> Hi Mosharaf,
>
> Can you please create a tracker issue and attach a copy of your osdmap?
> Also, please include any other output that characterizes the slowdown in
> client I/O operations you're noticing in your cluster. I can take a look
> once I have that information,
>
> Thanks,
> Laura
>
> On Wed, Sep 13, 2023 at 5:23 AM Mosharaf Hossain <
> mosharaf.hoss...@bol-online.com> wrote:
>
>> Hello Folks
>> We've recently performed an upgrade on our Cephadm cluster, transitioning
>> from Ceph Quiency to Reef. However, following the manual implementation of
>> a read balancer in the Reef cluster, we've experienced a significant
>> slowdown in client I/O operations within the Ceph cluster, affecting both
>> client bandwidth and overall cluster performance.
>>
>> This slowdown has resulted in unresponsiveness across all virtual machines
>> within the cluster, despite the fact that the cluster exclusively utilizes
>> SSD storage."
>>
>> Kindly guide us to move forward.
>>
>>
>>
>> Regards
>> Mosharaf Hossain
>> _______________________________________________
>> ceph-users mailing list -- ceph-users@ceph.io
>> To unsubscribe send an email to ceph-users-le...@ceph.io
>>
>>
>
> --
>
> Laura Flores
>
> She/Her/Hers
>
> Software Engineer, Ceph Storage <https://ceph.io>
>
> Chicago, IL
>
> lflo...@ibm.com | lflo...@redhat.com <lflo...@redhat.com>
> M: +17087388804
>
>
>
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