Hi,
I have a question about Ceph's performance
I've built a Ceph cluster with 3 OSD host, each host's configuration:
- CPU: 1 x Intel Xeon E5-2620 v4 2.1GHz
- Memory: 2 x 16GB RDIMM
- Disk: 2 x 300GB 15K RPM SAS 12Gbps (RAID 1 for OS)
4 x 800GB Solid State Drive SATA (non-RAID for OSD)(Intel SSD
DC S3610)
- NIC: 1 x 10Gbps (bonding for both public and replicate network).
My ceph.conf: https://pastebin.com/r4pJ3P45
We use this cluster for OpenStack cinder's backend.
We have benchmark this cluster by using 6 VMs, using vdbench.
Our vdbench script: https://pastebin.com/9sxhrjie
After test, we got the result:
- 100% random read: 100.000 IOPS
- 100% random write: 20.000 IOPS
- 75% RR - 25% RW: 80.000 IOPS
That results are so low, because we calculate the performance of this
cluster is: 112.000 IOPS Write and 1000.000 IOPS Read,
We are using Ceph Jewel 10.2.5-1trusty, kernel 4.4.0.-31 generic, Ubuntu
14.04
Could you help me solve this issue.
Thanks in advance
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