Re: [ceph-users] RBD is very slow

2013-12-28 Thread Markus Martinet
5.585 Max bandwidth (MB/sec): 468 Min bandwidth (MB/sec): 0 Average Latency:0.186847 Stddev Latency: 0.139004 Max latency:1.57187 Min latency:0.044427 Am 26.12.2013 17:32, schrieb Markus Martinet: > Hello, > > i have 2 OSD's and 3 MON's.

[ceph-users] RBD is very slow

2013-12-26 Thread Markus Martinet
Hello, i have 2 OSD's and 3 MON's. Every OSD is on a 2,5TB LVM/EXT4 storage. Why is the access to the rbd device so slow and what is meaning with "Stddev Bandwidth" in rados bench? See the below statistics: #Create a 1GB file on local Storage and test a local OSD for bandwidth cd /ceph/; dd if=/d