> Do these contain lots and lots of little files?
If so, have you considered FlashBackup?
The backup is 19GB over 35,000 files. That's pretty
typical. It took 17 hours to run. That's not typical. We
hope to upgrade to NBU7 later this year and take advantage of the new features
for backing up VMs
> Do you have enough memory on these guests. We've seen some issues
where one of our VMware admins decided to give all of the new guests VERY
little memory,
forgetting that after he provisioned the guest he was supposed to increase
it to a reasonable size.
The guests all have 4GB memory.
> If you do network exerciser from the guest to the media server, what
sort of performance do you get? For example, have you tried something
like an FTP or a simple
file copy directly from the guest to the media server?
I copied a folder containing 215MB of files from the guest
to the media server. It took nearly two minutes. A lot slower
than I'd have expected for a 1Gb LAN, so to have a basis of comparason,
I copied 206MB of files from a 2k8 server running on bare metal to the
same media server, and that copy took about half the time. Not stellar
performance, but still better than the VM. This is all repeatable.
What I've observed is that at the start of the backup,
we get good performance, but it slows after 20 minutes or so. The
activity also seems to happen in bursts with periods of good speeds followed
by periods of poor performance.
I'm a UNIX administrator by trade, so troubleshooting
Windows issues is a bit foreign to me.
--
Jack Forester, Jr.
Sr. Data Protection Administrator
Global Technology Services - AHS
Mylan, Inc.
5005 Greenbag Road
Morgantown, WV 26501
jack.forester AT mylan DOT com
Phone: +1.304.554.6039
Cell: +1.412.805.5313
"Ed Wilts" <ewilts AT ewilts DOT org>
Sent by: veritas-bu-bounces AT mailman.eng.auburn DOT edu
07/07/2010 10:50 AM
|
|
To
| Jack.Forester AT mylan DOT com
|
|
cc
| veritas-bu AT mailman.eng.auburn DOT edu
|
|
Subject
| Re: [Veritas-bu] Performance tuning
Windows 2008 client |
|
On Wed, Jul 7, 2010 at 9:28 AM, <Jack.Forester AT mylan DOT com>
wrote:
We're observing some significant performance issues with some of our Windows
2008 SP2 clients.
Backing up to a DD880 VTL, one client
in particular is running at just over 300KB/sec. Others are running
2-3MB/sec.
The clients in question are all virtual
machines running on VMWare ESX 3.5.0 238493. Our Windows 2008 clients
running on bare metal are performing well.
Our NetBackup environment is version
6.5.3 on the master/media server and the client.
We've tried tuning the net buffer size, but that made no difference. Are
there other things we can try?
Do these contain lots and lots of little files? If so, have you considered
FlashBackup?
Do you have enough memory on these guests. We've seen some issues
where one of our VMware admins decided to give all of the new guests VERY
little memory,
forgetting that after he provisioned the guest he was supposed to increase
it to a reasonable size.
If you do network exerciser from the guest to the media server, what sort
of performance do you get? For example, have you tried something
like an FTP or a simple
file copy directly from the guest to the media server?
.../Ed
Ed Wilts, RHCE, BCFP, BCSD, SCSP, SCSE
ewilts AT ewilts DOT org
Linkedin
We have a case open with Symantec, but I thought I'd check here to see
if anyone else has run into this issue.
--
Jack Forester, Jr.
Sr. Data Protection Administrator
Global Technology Services - AHS
Mylan, Inc.
5005 Greenbag Road
Morgantown, WV 26501
jack.forester AT mylan DOT com
Phone: +1.304.554.6039
Cell: +1.412.805.5313
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