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vm:proxmox:ceph:performance [2026/06/07 21:12] niziakvm:proxmox:ceph:performance [2026/06/07 21:13] (current) niziak
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 Ceph is build for scale and works great in large clusters. In small cluster every node will be heavily loaded. Ceph is build for scale and works great in large clusters. In small cluster every node will be heavily loaded.
  
-  * ceph ensure data safety - it waits for data to be written to medium (on consumer SSDs). Use enterpise SSDs with battery PLP (Power Loss Protection) to reduce latency. Some people reports 8x speed increase.+  * ceph ensure data safety - it waits for data to be written to medium on all replicas. Use enterpise SSDs with battery PLP (Power Loss Protection) to reduce latency. Some people reports 8x speed increase.
   * adapt PG to number of OSDs to spread traffic evenly   * adapt PG to number of OSDs to spread traffic evenly
   * use ''krbd''   * use ''krbd''