Hello, is there a difference between those two benchmarks? I mean, with rados i get the expected results, and rbd bench ist far away from it. I was not able to see any bottlenecks at all. It looked like with rados bench the disk did a lot more work than with rbd bench. Any ideas on this? rados bench -p scbench 60 seq --io-size 8192 --io-threads 256 ... Total time run: 46.565262 Total reads made: 8021 Read size: 4194304 Object size: 4194304 Bandwidth (MB/sec): 689.011 Average IOPS: 172 Stddev IOPS: 14 Max IOPS: 190 Min IOPS: 114 Average Latency(s): 0.0921206 Max latency(s): 1.54236 Min latency(s): 0.0113188 rbd -p rbdbench bench bench1_image --io-type read --io-size 8192 --io-threads 256 --io-total 10G --io-pattern seq ... elapsed: 571 ops: 1310720 ops/sec: 2295.01 bytes/sec: 18800700.54 (18MB/sec) I tried to use the same parameters in order to compare two same benchmarks. Why do i get so diffrent IOPS/Sec and MB/Sec results? Any ideas on this? Thanks, Mario _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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