On Wed, 07/04/2012 10:12 PM, Errol Neal <en...@businessgrade.com> wrote: > On Wed, 07/04/2012 09:58 PM, Errol Neal <en...@businessgrade.com> wrote: > > Hello All. > > > > Since I'm using the SerNet packages from Enterprise Samba dot org, please > > feel free to say "you should be asking the folks from Enterprise Samba > > about that".. > > > > Now with that said, on to my issue - for which i'd be very grateful if > > someene can help me understand if there is an issue with my configuration > > (either OS or samba) or perhaps if I've stumbled across a bug. > > > > I'm running the SerNet Samba Packages (3.6.6-44) on two-node CTDB cluster. > > My OS is CentOS 6.2. My cluster stack is Pacemaker and my filesystem is > > OCFS2. > > And just to make sure I've got everything covered, I'm using kernel > > 2.6.39-200.24.1 from the Oracle public yum servers so I can use some of the > > latest OCFS2 features on my filesystem and all of this is running on XCP > > (open source XenServer) > > > > As far as hardware details go, this is running on a PowerEdge R515 with > > 128GB of memory and 12 600GB 15K SAS drives with a H700 controller. > > > > I've been doing some basic performance testing and so far, I'd say my > > performance is exceptional. From two Windows VMs on a completely different > > host, I'm able to >>saturate two gibabit links when copying large files to > > and from the share, but there is a problem when I attempt to make copies of > > the files on the same share (e.g. copy >>\\server\share\file1 > > \\server\share\file1.backup) - and the behavior appears to be filesystem > > agnostic. I've tried with ext3 also and the behavior is the same. The > > Windows >>copy progress indicator will go back and forth and then finally > > it tells me I'm getting about several hundred KB p/s. And I know it's not > > the filesystem because on my OCFS2 >>volume, it takes me less than 5 > > seconds to copy and 480MB ISO back to the same filesystem.
Looks like I figured out what the issue was. I had aio read size set too high. Tuned it down to 64K and my problem went away. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
