Re: newstore performance update

[Mark Nelson <mnelson@redhat.com>]

On 04/28/2015 11:31 PM, Alexandre DERUMIER wrote:
> Hi,
>
>>> I am trying to measure 4k RW performance on Newstore, and I am not
>>> anywhere close to the numbers you are getting!
>>>
>>> Could you share your ceph.conf for these test ?
>
> I'll try also to help testing newstore with my ssd cluster.
>
> what is used for benchmark ? rados bench ?
> any command line to reproduce the same bechmark ?

Hi Alexandre,

I used fio with the librbd engine via cbt (a tool to build ceph clusters 
and run benchmarks / monitoring / valgrind / etc)

You can see how fio gets invoked here:

https://github.com/ceph/cbt/blob/master/benchmark/librbdfio.py

The settings for these tests are:

benchmarks:
   librbdfio:
     time: 300
     vol_size: 16384
     mode: [write, randwrite]
     op_size: [4194304, 2097152, 1048576, 524288, 262144, 131072, 65536, 
32768, 16384, 8192, 4096]
     concurrent_procs: [1]
     iodepth: [64]
     osd_ra: [4096]
     cmd_path: '/home/nhm/src/fio/fio'
     pool_profile: 'rbd'