Miles,
another issue worth to note - archsymlinkasfile!!
I've had a problem at a customer site where user was archiving /usr, there
was symbolic link somewhere deeper into AIX's WebSM directories looping
back to /usr, and according to Murphy's law archsymlinkasfile=yes (by
default).
The result: instead of ~30k files the archive managed to store nearly 600k
and in this small installation the DB was overflown (8GB, 35% used). He
added another DB volume (in emergency) and filled it too before my visit
onsite.
This is not directly related to your performance problem but the number of
files is rather high.
Zlatko Krastev
IT Consultant
Miles Purdy <PURDYM AT FIPD.GC DOT CA>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
26.06.2003 20:52
Please respond to "ADSM: Dist Stor Manager"
To: ADSM-L AT VM.MARIST DOT EDU
cc:
Subject: Poor Archive Performance
Hi folks,
Recently I've done several upgrades, and today I'm getting terrible
archive performance, although I don't do a lot of archives. My environment
is:
TSM server on AIX
TSM server 5.1.6.4 32-bit, with 64-bit device support
AIX 5.1 ML04 64-bit kernel
TSM client on AIX
TSM client 5.1.5.15
AIX 4.3.3 ML 9 and ML 11 (two different clients with same problem)
Communications over SP Switch.
Here is an example, I finally killed the archive:
>
----------------------------------------------------------------------------------------------
Miles Purdy
System Manager
Information Systems Team (IST),
Farm Income Programs Directorate (FIPD),
Agriculture and Agri-Food Canada (AAFC)
Winnipeg, MB, CA
Office contact: Mobile contact:
purdym AT fipd.gc DOT ca purdym AT rogers.blackberry DOT net
ph: (204) 984-1602 fax: (204) 983-7557 Cell: (204) 291-8758
"If you hold a UNIX shell up to your ear, can you hear the C?"
------------------------------------------------------------------------------------------------->>>>>
Process Interrupted!! Severing connection. <<<<<<
Total number of objects inspected: 212 587
Total number of objects archived: 206 848
Total number of objects updated: 0
Total number of objects rebound: 0
Total number of objects deleted: 0
Total number of objects expired: 0
Total number of objects failed: 0
Total number of bytes transferred: 5.72 GB
Data transfer time: 103.71 sec
Network data transfer rate: 57 865.25 KB/sec
Aggregate data transfer rate: 103.23 KB/sec
Objects compressed by: 0%
Elapsed processing time: 16:08:53
After 16 hours, barely anything had been done. I'm trying to archive /usr/
on two aix servers (both 4.3.3).
I did some investigation, and I can't really see that anything is wrong. I
did notice that one CPU on my TSM server is pinned, which make me suspect
that the bottle neck is the TSM database.
I've looked through list, and have seen similar problems, but for a 4.1
and 4.2 server. Are they any problems with a 5.1 server?
Thanks Miles
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