I think using the dashboard you can check for incorrect MTU settings, that is sometimes an issue. Brett On Mon, Mar 3, 2025 at 12:42 PM Ramin Najjarbashi < ramin.najarbashi@xxxxxxxxx> wrote: > The Ceph version is 17.2.7. > > > • OSDs are a mix of SSD and HDD, with DB/WAL colocated on the same OSDs. > > • SSDs are used for metadata and index pools with replication 3. > > • HDDs store the data pool using EC 4+2. > > > Interestingly, the same issue has appeared on another cluster where DB/WAL > is placed on NVMe disks, but the pool distribution is the same: meta and > index on SSDs, and data on HDDs. > > > It seems to be network-related, as I’ve checked the interfaces, and there > are no obvious hardware or connectivity issues. However, we’re still seeing > a high number of retransmissions and duplicate packets on the network. > > > Let me know if you have any insights or suggestions. > > > On Mon, Mar 3, 2025 at 12:36 Stefan Kooman <stefan@xxxxxx> wrote: > > > On 01-03-2025 15:10, Ramin Najjarbashi wrote: > > > Hi > > > We are currently facing severe latency issues in our Ceph cluster, > > > particularly affecting read and write operations. At times, write > > > operations completely stall, leading to significant service > degradation. > > > Below is a detailed breakdown of the issue, our observations, and the > > > mitigation steps we have taken so far. We would greatly appreciate any > > > insights or suggestions. > > > > What ceph version? > > > > How are OSDs provisioned (WAL+DB, single OSD, etc.). Type of disks. > > > > Gr. Stefan > > > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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