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Diagnosing slow ceph performance

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Having issues trying to figure out where the issues lies with performance here.

I currently have 5 nodes, each node containing 5 SSD samsung evo disks (I know consumer drives are not the best, but I still wouldn't expect performance to be this low)

the ceph public and cluster network are using Mellanox Connect-X3 with latest firmware into a Mellanox SX1012 at 40Gb over Ethernet

Each node is the following:
24 x Intel(R) Xeon(R) CPU E5-2640 0 @ 2.50GHz (2 Sockets)
128 GB RAM
Proxmox v7.0-10...

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