Hello
Mark
When
the restores were running on the master/media/client systems, did they
both have the same level of usage outside of the restores. That is was the
cpu busy, i/o usage pattern, network usage etc at the same levels for both
restores.
If
the user backup was running when the systems was under heavier usage and the
master scheduled backup was running when the systems was lightly used, this
might explain your differences.
I
am not sure how much different the process flow for a user backup vs a backup
scheduled from the master. But it might be the relative system priority of the
inet.d started processes vs the process's started by the user backup.
len
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of
mark.a.goodchild AT bt DOT com
Sent: Wednesday, July 04, 2007 10:03
AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject:
[Veritas-bu] Performance issues with user initiated
backups.
Hi
all
Environment
:
Master Netbackup 6.0
MP4
Solaris 10
Media
server 6.0 MP4
HP-UX 11
IBM 3584
Library San Attached
IBM LTO2
Drives
Media server
is the oracle client too so it’s a local backup.
Data
:
/u21/oradata/D1
118gb 169 files
User Backup
of above writes to drive1, tape1 at 13mb/sec
Scheduled/immediate
backup writes to drive1, tape1 at 27mb/sec
We believe
that there is so much communication going on between all the netbackup processes
regarding files and updates when a user backup is run.
Can anyone
think of anything else that would slow this backup down to half the
speed.
We have done
numerous tests on different drives, tapes and even chosen different data
locations, and come up with the same results.
Cheers