how to increase small file writes performance in ceph

[huang jun <hjwsm1989@xxxxxxxxx>]

hi，developers
     Recently，i test ceph's performance of writing small files,but the result
seems not so good.

i have 4 OSDs (on two hosts,each have two cosd process), and 4 clients,
3 of them execute the zq.sh script,and 1 writes small files :
 for i in {1..30000}; do
         dd if=/dev/zero of=$i.txt bs=10M count=1
     done
and write speed is  about 7MB/s~12MB/s
my ceph version 0.24.3
linux kernel version 2.6.35
i want to know that does the cluster size matters our write speed?
does our filesystem good at small files writing?

thanks!

Attachment: zq.sh
Description: Bourne shell script