Hi,Alex.Here comes the new update: We apply cache='writeback' to the vm. then the performance improve,however, not quite much,the speed is 9.9MB/s,increased by 3.9MB/s. any other advise for us?
thanks a lot. Best regards. -- Allen 在 2013-06-28 15:54:07，"Alex Bligh" <[email protected]> 写道： > >On 28 Jun 2013, at 08:41, 华仔 wrote: > >> write speed: wget http://remote server ip/2GB.file , we get a write >> speed at an average speed of 6MB/s.(far behind expected) >> (we must get something wrong there, we would appreciate a lot if any help >> comes from you. we think the problems comes from the kvm emulator, but we >> are not sure, can you give us some advice to improve our vm's disk >> performance in the aspect of writing speed?) > >Are you using cache=writeback on your kvm command line? What about librbd >caching? What versions of kvm & ceph? > >-- >Alex Bligh > > > > _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
