We have been benchmarking CephFS and comparing it Rados to see the performance
difference and how much overhead CephFS has. However, we are getting odd
results when using more than 1 OSD server (each OSDS has only one disk) using
CephFS but using Rados everything appears normal. These tests are run on the
same Ceph Cluster.
CephFS Rados
OSDS Thread 16 Thread 16
1 289 316
2 139 546
3 143 728
4 142 844
CephFS is being benchmarked using: fio --name=seqwrite --rw=write --direct=1
--ioengine=libaio --bs=4M --numjobs=16 --size=1G --group_reporting
Rados is being benchmarked using: rados bench -p cephfs_data 10 write -t 16
If you could provide some help or insight into why this is happening or how to
stop it, that would be much appreciated.
Kind regards,
Gabryel
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