Ceph Read/Write Speed

[Roozbeh Shafiee <roozbeh.shafiee@xxxxxxxxx>]

Hi,

I have a test Ceph cluster in my lab which will be a storage backend for one of my projects.

This cluster is my first experience on CentOS-7, but recently I had some use case on Ubuntu 14.04 too.

Actually everything works fine and I have a good functionality on this cluster, but the main problem is the performance

of cluster in read and write data. I have too much swing in read and write and the rate of this swing is between 60 KB/s - 70 MB/s, specially on read.

how can I tune this cluster as stable storage backend for my case?

More information:

Number of OSDs: 5 physical server with 4x4TB - 16 GB of RAM - Core i7 CPU

Number of Monitors: 1 virtual machine with 180 GB on SSD - 16 GB of RAM - on an KVM Virtualization Machine

All Operating Systems: CentOS 7.2 with default kernel 3.10

All File Systems: XFS

Ceph Version: 10.2 Jewel

Switch for Private Networking: D-Link DGS-1008D Gigabit 8

NICs: Gb/s NIC x 2 for each server

Block Device on Client Server: Linux kernel RBD module

Thank you

Roozbeh

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