Hi folks, I'm doing a test for Rados bench now. The cluster is deployed by ceph-deploy
Ceph version: Emperor FS : XFS I created a pool test3 with size1 : pool 13 'test3' rep size 1 min_size 1 crush_ruleset 0 object_hash rjenkins pg_num 2000 pgp_num 2000 last_change 166 owner 0 The Rados bench command issued from an independent benchmark machine. Public network : 10GbE Cluster network : 10GbE Result : rados bench -p test3 30 write -t 100 Total time run: 30.275789 Total writes made: 2876 Write size: 4194304 Bandwidth (MB/sec): 379.974 Stddev Bandwidth: 90.2077 Max bandwidth (MB/sec): 420 Min bandwidth (MB/sec): 0 Average Latency: 1.03858 Stddev Latency: 0.112756 Max latency: 2.20545 Min latency: 0.10155 Why the bandwidth only 379MB/sec? I expected the speed suppose to be over 900MB/sec due to the pool size only 1. There're 3 storage nodes here. 10 OSDs on each storage node + journals on a SSD with 10 partitions. Any suggestions? Thanks
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