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Last active November 1, 2025 00:46
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Ceph Benchmarking Notes
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README.md

OSD

Throuhput

  1. Increase osd_bench_large_size_max_throughput to something larger (e.g. 10737418240, 10Gi) using ceph config set osd.<id> osd_bench_large_size_max_throughput <throughput>.
  2. Run ceph tell osd.* bench <size> with e.g. 21474836480 (20Gi)

IOPS

  1. Increase osd_bench_small_size_max_iops to something larger (e.g. 100000) using ceph config set osd.<id> osd_bench_small_size_max_iops <iops>.
  2. Run ceph tell osd.* bench <size> <blocksize> with e.g. 2147483648 (2Gi) for <size> and e.g. 512 for <blocksize>.

RBD

Throuhput

  1. Run rados bench -p <pool> 600 write -t 16 --object_size=4MB --no-cleanup
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