Hi Gary!
I know about the Windows 2008 system state performance issue which will
never be resolved in 5.5, but expiration performance is similar on
another server, which only contains 3 Windows 2008 nodes...
Thanks!
Kind regards,
Eric van Loon
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Lee, Gary
Sent: donderdag 16 februari 2012 15:32
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Expiration performance TSM 5.5 (request)
Do you have many win 2008 and win 7 clients with client version 6.2.2?
For some reason (forget the apar), expiration is very slow with these
clients.
I am going to 6.3 soon, and hope to solve this with that move.
I have a 6.2 server, can't get your script to run, but observation tells
me that expirations that run hours on 5.5 run in minutes on 6.2.
Gary Lee
Senior System Programmer
Ball State University
phone: 765-285-1310
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Loon, EJ van - SPLXO
Sent: Thursday, February 16, 2012 9:02 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Expiration performance TSM 5.5 (request)
Hi TSM-ers!
I'm struggling with the performance of our expiration process. I can't
get it any faster than 100 object/second max. We tried everything, like
using more or less database volumes, multiple volumes per filesystem,
mirroring, unmirroring, but nothing seems to have any positive effect.
We are using SAN attached enterprise class storage (EMC Vmax) with the
fastest disks available.
I have seen other users with similar (or larger) databases with much
higher figures, like more than 1000 objects/sec, so there must be
something I can do to achieve this. In 2007 at the Oxford TSM Symposium
(http://tsm-symposium.oucs.ox.ac.uk/2007/papers/Dave%20Canan%20-%20Disk%
20Tuning%20and%20TSM.pdf page 25) IBM also stated that 1000 object/sec
is possible.
I would really like to know from other TSM 5.5 users how their
expiration is performing. Could you please let me know by sending me the
output from the following two SQL queries, along with the platform you
are using:
select activity, cast((end_time) as date) as "Date",
(examined/cast((end_time-start_time) seconds as decimal(18,13))*3600)
"Objects Examined/Hr" from summary where activity='EXPIRATION' and
days(end_time)-days(start_time)=0
select capacity_mb as "Capacity MB", pct_utilized as "Percentage in
use", cast(capacity_mb*pct_utilized/100 as integer) as "Used MB" from db
Thank you VERY much for your help in advance!!!!
Kind regards,
Eric van Loon
KLM Royal Dutch Airlines
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********************************************************
For information, services and offers, please visit our web site:
http://www.klm.com. This e-mail and any attachment may contain confidential and
privileged material intended for the addressee only. If you are not the
addressee, you are notified that no part of the e-mail or any attachment may be
disclosed, copied or distributed, and that any other action related to this
e-mail or attachment is strictly prohibited, and may be unlawful. If you have
received this e-mail by error, please notify the sender immediately by return
e-mail, and delete this message.
Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its
employees shall not be liable for the incorrect or incomplete transmission of
this e-mail or any attachments, nor responsible for any delay in receipt.
Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch
Airlines) is registered in Amstelveen, The Netherlands, with registered number
33014286
********************************************************
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