Re: [ceph-users] Why performance of benchmarks with small blocks is extremely small?

2014-10-01 Thread Timur Nurlygayanov
2014 19:17:22 +0400 Timur Nurlygayanov wrote: Hello all, I installed OpenStack with Glance + Ceph OSD with replication factor 2 and now I can see the write operations are extremly slow. For example, I can see only 0.04 MB/s write speed when I run rados bench with 512b blocks: rados

[ceph-users] Why performance of benchmarks with small blocks is extremely small?

2014-09-30 Thread Timur Nurlygayanov
Hello all, I installed OpenStack with Glance + Ceph OSD with replication factor 2 and now I can see the write operations are extremly slow. For example, I can see only 0.04 MB/s write speed when I run rados bench with 512b blocks: rados bench -p test 60 write --no-cleanup -t 1 -b 512