With AIX 5.2 things have changed a little regarding vmtune, and the no
command has also changed. These are now in the bos.perf.tune fileset.
vmtune and schedtune commands have been replaced with vmo, ioo, schedo.
You can still use the old vmtune command because there is a pre520tune
compatibility mode that is turned on by default. If you turn off the
pre520tune compatibility mode, you can use "smitty tuning" to manage all
the same values without the need for vmtune. There is also an option in
smit to save the settings so they are applied on every reboot.
The pre520tune setting is in smit...System Environment...Change/Show
Characteristics of Operating System.
______________________________
John Monahan
Senior Consultant Enterprise Solutions
Computech Resources, Inc.
Office: 952-833-0930 ext 109
Cell: 952-221-6938
http://www.compures.com
Ben Bullock
<bbullock@MICRON.
COM> To
Sent by: "ADSM: ADSM-L AT VM.MARIST DOT EDU
Dist Stor cc
Manager"
<[email protected] Subject
.EDU> Re: Antwort: Re: TSM performance
and network options
11/19/2003 05:24
PM
Please respond to
"ADSM: Dist Stor
Manager"
<[email protected]
.EDU>
Just to stray a ~little~ off-topic....
I'm interested in the vmtune64 command you are using. I recently
migrated a host to aix5.2 and am running it in 64-bit mode, but still
only have the vmtune command, not vmtune64...
root:># lslpp -w /usr/samples/kernel/vmtune
File Fileset Type
------------------------------------------------------------------------
----
/usr/samples/kernel/vmtune bos.adt.samples File
root:># lslpp -l bos.adt.samples
Fileset Level State Description
------------------------------------------------------------------------
----
Path: /usr/lib/objrepos
bos.adt.samples 5.2.0.10 COMMITTED Base Operating System
Samples
Which fileset is this "vmtune64" command included in, I can't
seem to find a 64-bit version of this fileset.
Thanks,
Ben
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Merryman, John A.
Sent: Wednesday, November 19, 2003 12:43 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Antwort: Re: TSM performance and network options
Make sure file system caching is off for JFS filesystems- and consider
running vmtune on aix. We have the following parameters that made a
tremendous difference. I would suggest testing in a test environment
first if you have the
option:
vmtune64 -p 10 -P 20 -s1 -W16 -c8 -R256 -F512 -u25 -b2200 -B2200
note- we are running 64bit mode AIX 5.1 ML4, hence vmtune64.
Also, using Direct I/O on TSM and AIO servers on AIX can help with
performance, but overall the underlying disk infrastrucutre is going to
be just as important as the logical layout and tuning.
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU]On Behalf Of
French, Michael
Sent: Wednesday, November 19, 2003 2:33 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Antwort: Re: TSM performance and network options
I can't really speak to Aix performance with RAW volumes, maybe
someone else can. I use Solaris on all of my TSM servers and I can tell
a huge difference between RAW and logical. In basic benchmark testing,
it took 4-6 minutes to backup 1 500MB file from the local disk on the
TSM server using logical, vxfs formatted volumes. Doing the same test
with RAW volumes took about 40 secs, a huge difference. I was able to
replicate these results many times over. You will also see a big
performance boost in operations such as expiration and file space
deletions.
Michael French
Savvis Communications
IDS01 Santa Clara, CA
(408)450-7812 -- desk
(408)239-9913 -- mobile
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Frank Mueller
Sent: Wednesday, November 19, 2003 11:29 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Antwort: Re: TSM performance and network options
Hi *,
I use on both server logical volumes and jfs-filesystems. All (DB, log
and disk pool) are on jfs-filesystems.
Is it better when I change to RAW devices?
Best regards,
Frank Mueller
"French, Michael"
<Michael.French@S An:
ADSM-L AT VM.MARIST DOT EDU
AVVIS.NET> Kopie:
Gesendet von: Thema: Re: TSM
performance and network options
"ADSM: Dist Stor
Manager"
<[email protected]
.EDU>
19.11.2003 20:23
Bitte antworten
an "ADSM: Dist
Stor Manager"
Are you using RAW volumes or logical, file system mounted
volumes for DB, log, and disk pool? RAW volumes make a HUGE difference.
You should also have your client's NIC's forced to 100/Full (the ones
using fastethernet), don't let them auto negotiate, kill's backup
performance.
Michael French
Savvis Communications
IDS01 Santa Clara, CA
(408)450-7812 -- desk
(408)239-9913 -- mobile
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Frank Mueller
Sent: Wednesday, November 19, 2003 11:19 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: TSM performance and network options
Hi *,
our TSM environment is very slow (backup from the clients and the backup
storage pool from the first to the second server). So I would like to
describe our environment once roughly: We have 2 TSM server (Version
5.1.8) which runs both on AIX boxes with AIX 5.1. On the first server is
an 3494 library (with 4 3590 drives) connected and on the second server
an 3583 (with 3 LTO Ultrium1 drives).
The clients (AIX-clients and Windows clients) are connected over
fastethernet or gigaethernet. First TSM server has both adapter (fast
and giga). The connection between the first and the second TSM server is
gigaethernet.
Can you give me some tips to increase the performance? I think that are
some TSM and AIX options (TCPWindowsize etc on TSM side and son
no-Paramter on AIX site).
What is a good start for this options?
Best regards,
Frank Mueller
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