Re: [ceph-users] perf counter reset

2014-11-28 Thread Ma, Jianpeng
At present, no perf reset command. I implemented perf reset and the pull request: https://github.com/ceph/ceph/pull/3028. Would you like to test? Thanks! Jianpeng > -Original Message- > From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of > 池信泽 > Sent: Thursday, Nove

[ceph-users] Why choose 4k as default for stripe-width

2014-07-07 Thread Ma, Jianpeng
Hi Loic, At present, I test different stripe-width(4k,16k,32k,256k,512k, 1024k) with k=3/m=2. I used cosbench+librados to test the performance with 10MB-write(object size). Stripe-width avg-cpu-uitl-of-osd(user+kernel) Throghput 4k 83% 90.01