回复: half performace with keyvalue backend in 0.87

[廖建锋 <Derek@xxxxxxxxx>]

Also found the other problem is:  the ceph osd directory has millions small files which will cause performance issue 

1008 => # pwd
/var/lib/ceph/osd/ceph-8/current

1007 => # ls |wc -l
21451

发件人： ceph-users

发送时间： 2014-10-31 08:23

收件人： ceph-users

主题：  half performace with keyvalue backend in 0.87

Dear Ceph,

      I used keyvalue backend in 0.80.6 and 0.80.7, the average speed with rsync millions small files is 10M byte /second

when i upgrade to 0.87(giant), the speed slow down to 5M byte /second,  I don't why , is there any tunning option for this?

will superblock cause those performance slow down?

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