On Wed, 07/04/2012 09:58 PM, Errol Neal <[email protected]> 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. > > So that is my issue. Here are some files in case you have any thoughts. > Please let me know if you'd like more information. >
I realized that I should have included some performance metrics from another OS. When performing the same operation on a Linux VM running on the same VM host as the Windows servers I was conducting tests from earlier, it took 34 seconds to backup the same ISO image to the same directory on the same share. When I copied the file from the share to the local disk of the Linux VM, it took less than 2 seconds. -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
