[pve-devel] ceph packages for debian jessie

Alexandre DERUMIER aderumier at odiso.com
Mon May 11 08:43:53 CEST 2015


Hi,
I have build ceph packages for debian jessie for testing

http://odisoweb1.odiso.net/ceph-jessie/


(I'm currently working with ceph dev to have official builds).



Prelimary benchmarks give an big boost on librbd on jessie (maybe related to libc6)


fio-rbd 10jobs 4k rand read on 1osd
 
debian wheezy : rbd_cache=false: iops=161272 %Cpu(s): 28.4 us, 15.4 sy, 0.0 ni, 52.8 id, 0.0 wa, 0.0 hi, 3.4 si, 0.0 st 
debian wheezy : rbd_cache=true : iops=135893 %Cpu(s): 30.0 us, 15.5 sy, 0.0 ni, 51.5 id, 0.0 wa, 0.0 hi, 3.0 si, 0.0 st 

debian jessie: rbd_cache=false : iops=202985 : %Cpu(s): 21,9 us,  9,5 sy,  0,0 ni, 66,1 id,  0,0 wa,  0,0 hi,  2,6 si,  0,0 st
debian jessie: rbd_cache=true :  iops=215290 : %Cpu(s): 27,9 us, 10,8 sy,  0,0 ni, 58,8 id,  0,0 wa,  0,0 hi,  2,6 si,  0,0 st



(inside qemu we are limited to 1thread by disk, but it should give something like 35000iops vs 25000iops)
I do more qemu benchmark later.



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