This is definitely a problem with duplex in your network adapters. If you
are using managed switches, make sure both sides have their adapters set to
100 mb full duplex. Set the switches the same. Make sure you are not using
auto detect.
Start with your server and work your way to the clients. You will be amazed
after you do this to one of your clients. The data will fly through your
network.
Kelly J. Lipp
STORServer, Inc.
485-B Elkton Drive
Colorado Springs, CO 80907
lipp AT storsol DOT com or kelly.lipp AT storserver DOT com
www.storsol.com or www.storserver.com
(719)531-5926
Fax: (240)539-7175
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
Niklas Lundstrom
Sent: Tuesday, November 05, 2002 8:33 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Troubleshooting performance issues
Hello
Your datatransfer rate seems low. Are you running at 100 mbit and full
duplex?
Try to ftp a file from the client to the server and check the transfertime,
with 100mbit you should get about 10mb/sec
Regards
Niklas
-----Original Message-----
From: Etienne Brodeur [mailto:ebrodeur AT SERTI DOT COM]
Sent: den 5 november 2002 15:44
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Troubleshooting performance issues
I have some major performance issues during archive operations. I also have
bad performance durning backups, but the backup window is large so they
complete without any problems. I can't seem to put my finger on the
bottleneck and was wondering if someone had a document to recommend when
looking for performance issues?
Here is the scenario:
TSM 4.2.2.10 server on W2K (SP2)
3 IDE drives. OS - DB - LOG
100 Mbs/Full Duplex (not auto)
LTO 3583 SCSI attached to the server
Server Options:
CommTimeOut 60
IdleTimeOut 30
BufPoolSize 81920
LogPoolSize 512
TxnGroupMax 256
MoveBatchSize 256
MoveSizeThresh 500
UseLargeBuffers Yes
NOBUFPREfetch No
AuditStorage Yes
SELFTUNEBUFpool Yes
SELFTUNETXNsize Yes
TCPWindowsize 64512
TCPNoDelay Yes
There are 10 clients running 4.2.2.x (mostly 4.2.2.0). I have not set any
performance settings in the DSM.OPTs. The servers have less than 10 GB of
data each. I have 5 of them archiving to tape at the same time and they are
all running very slowly:
05-11-2002 01:29:29 ANE4952I (Session: 5848, Node: HY-ORAPED-2000) Total
number of objects inspected: 102,322
05-11-2002 01:29:29 ANE4953I (Session: 5848, Node: HY-ORAPED-2000) Total
number of objects archived: 86,989
05-11-2002 01:29:29 ANE4961I (Session: 5848, Node: HY-ORAPED-2000) Total
number of bytes transferred: 6.46 Go
05-11-2002 01:29:29 ANE4963I (Session: 5848, Node: HY-ORAPED-2000) Data
transfer time: 11,875.56 sec
05-11-2002 01:29:29 ANE4966I (Session: 5848, Node: HY-ORAPED-2000)
Network
data transfer rate: 570.67 KB/sec
05-11-2002 01:29:29 ANE4967I (Session: 5848, Node: HY-ORAPED-2000)
Aggregate
data transfer rate: 511.71 KB/sec
05-11-2002 01:29:29 ANE4968I (Session: 5848, Node: HY-ORAPED-2000)
Objects
compressed by: 0%
05-11-2002 01:29:29 ANE4964I (Session: 5848, Node: HY-ORAPED-2000)
Elapsed
processing time: 03:40:43
This was the fast one, I also have this W2K client:
05-11-2002 07:25:34 ANE4952I (Session: 5906, Node: HY-OSRV-2000) Total
number
of objects inspected: 8,424
05-11-2002 07:25:34 ANE4953I (Session: 5906, Node: HY-OSRV-2000) Total
number
of objects archived: 8,364
05-11-2002 07:25:34 ANE4961I (Session: 5906, Node: HY-OSRV-2000) Total
number
of bytes transferred: 2.76 Go
05-11-2002 07:25:34 ANE4963I (Session: 5906, Node: HY-OSRV-2000) Data
transfer time: 2,871.55 sec
05-11-2002 07:25:34 ANE4966I (Session: 5906, Node: HY-OSRV-2000) Network
data
transfer rate: 1,008.95 KB/sec
05-11-2002 07:25:34 ANE4967I (Session: 5906, Node: HY-OSRV-2000)
Aggregate
data transfer rate: 97.15 KB/sec
05-11-2002 07:25:34 ANE4968I (Session: 5906, Node: HY-OSRV-2000) Objects
compressed by: 0%
05-11-2002 07:25:34 ANE4964I (Session: 5906, Node: HY-OSRV-2000) Elapsed
processing time: 08:17:01
Please help me! I don't know where to look anymore.
Thanks,
Etienne Brodeur
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