Does your iSCSI primary storage offer better disk IO performance than NFS?
------------------ Original ------------------ From: "Aaron Delp"<aaron.d...@citrix.com>; Date: Thu, Aug 1, 2013 00:18 AM To: "users@cloudstack.apache.org"<users@cloudstack.apache.org>; Subject: Re: iSCSI IO performance is worse than NFS,why? > Sorry, I don't have enough KVM experience to comment or troubleshoot. On 7/31/13 9:00 AM, "WXR" <1485739...@qq.com> wrote: >kvm > > > > >------------------ Original ------------------ >From: "Aaron Delp"<aaron.d...@citrix.com>; >Date: Wed, Jul 31, 2013 11:40 PM >To: "users@cloudstack.apache.org"<users@cloudstack.apache.org>; > >Subject: Re: iSCSI IO performance is worse than NFS,why? > > > >On 7/31/13 8:32 AM, "WXR" <1485739...@qq.com> wrote: > > >>I find that the disk IO performance of vm instances on >>iSCSI(sharedmountpoint) primary storage is worse than that on NFS primary >>storage. >> >>When I use a single hdd and create a NFS share as primary storage,the >>disk IO performance is pretty good. >>But when I use the same hdd and create a iSCSI lun as primary storage,the >>disk IO performance is lower than NFS. >> >>I think the disk IO performance of iSCSI should be better than NFS. > >> What hypervisor are you using to attach? > > >. .
