Hi,
before seriously looking into your HW-configuration and disk layout you
should rule out any paging space issues and lack of I/O-tuning. Check
paging space activity with "vmstat" or "nmon". Consistant activity to
and from paging space during dbbackup/expiration indicates you have a
memory/tunin
.
Sent: Monday, August 21, 2006 2:48 PM
To: 'ADSM: Dist Stor Manager'
Subject: RE: poor performance
> What size disks? were these the same disks as on your previous setup?
All disks are 36GB. Yes, these are the same size as the previous setup.
Available space is 132GB assigned capac
Geoff -
Do a physical inspection of the D40s, in particular looking for
blinking lights indicating incomplete SSA loops which degrade
performance. Your AIX Error Log may also hold indications of problems.
All the usual system tuning considerations need to be pursued. One of
the first things I wo
> What size disks? were these the same disks as on your previous setup?
All disks are 36GB. Yes, these are the same size as the previous setup.
Available space is 132GB assigned capacity is 120GB.
The difference would be in the number of db volumes. The old system has 9, 3
on each 36GB disk the
>> On Mon, 21 Aug 2006 08:43:26 -0700, "Gill, Geoffrey L." <[EMAIL PROTECTED]>
>> said:
> To be more clear. The 4 D40's are a mixture of database, logs and
> disk pools. One VG for database, one for mirrored database and one
> for data storage pools.
Mkay; good. :)
What size disks? were these
<[EMAIL PROTECTED] Re: poor performance
.EDU>
08/21/2006 11:43
AM
Please respond to
"ADSM: Dist Stor
Manager"
<[EMAIL PROTECTED]
.EDU>
>
>4 full D40s, JBOD, for the database? Ouchie. There's my leading
>candidate for performance problems.
>I suggest one VG with a bunch of non-raided disks in it, raw LVs one
>or two to a spindle, with mirrors on separate spindles, for DB and
>log.
To be more clear. The 4 D40's are a mixture
>> On Fri, 18 Aug 2006 09:23:06 -0700, "Gill, Geoffrey L." <[EMAIL PROTECTED]>
>> said:
> This is a 6h1 with 4 processors and 4Gb memory. Disks are SSA, 2
> controllers and 4 full D40's for TSM DB, Logs and disk pools. All
> disk JBOD. GIG nic that when at it's peak only 50% utilized.
4 full D40
Double check your SSA loops, adapter settings, and AIX IO tuning. This very
much sounds like a disk IO problem.
Orville L. Lantto
Glasshouse Technologies, Inc.
From: ADSM: Dist Stor Manager on behalf of Gill, Geoffrey L.
Sent: Fri 8/18/2006 11:23
To: ADSM-L
>What's the hardware, what's the underlying DB disk tech, how much
>memory, etc?
>What's your assessment of the database cache size?
This is a 6h1 with 4 processors and 4Gb memory. Disks are SSA, 2 controllers
and 4 full D40's for TSM DB, Logs and disk pools. All disk JBOD. GIG nic
that wh
>> On Thu, 17 Aug 2006 20:44:45 -0700, "Gill, Geoffrey L." <[EMAIL PROTECTED]>
>> said:
> Although I have an open issue with TSM and AIX support on poor
> performance I was wondering if anyone might want to chime in on this
> subject. This are taking way too long on a 4 processor system that
> t
, Sweden
+46 70 3992759
P Baines <[EMAIL PROTECTED]>
Sent by: "ADSM: Dist Stor Manager"
2005-02-24 12:22
Please respond to
"ADSM: Dist Stor Manager"
To
ADSM-L@VM.MARIST.EDU
cc
Subject
Re: Poor performance with TSM Storage Agent on Solaris
Have you run a client p
Have you run a client performance trace? This may give you an idea about where
the client is spending it's time. What type of disk is the data stored on that
you want to back-up from/restore to? Are these the same type of disks where you
see 60MB/sec? (How many parallel sessions do you run to ge
Stor Manager"
To: [EMAIL PROTECTED]
cc:
Subject:Re: Poor Performance
Hello,
up to my (non-expert) knowledge
you can set tcp window size on various cisco devices.
The default seems to be 4128,
the command to change it is
ip tcp window-size <0-65535
> Sent: Friday, November 15, 2002 1:14 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Poor Performance
>
>
> What kind of Cisco is this?
> I am unaware of any Cisco non-networking device (if we assume iSCSI as
> half-networking) and networking ones should not mess with
> yo
PROTECTED]
cc:
Subject: Re: Poor Performance
Hi all
Thanx for all the replies some of the tricks have helped a bit. However
the TCPWindowsSize of 16 is set as CISCO has a limitation of
TCPwindowsize of 16 and whenever we increase it to 63 the server then
begins to timeout server r
Hi all
Thanx for all the replies some of the tricks have helped a bit. However
the TCPWindowsSize of 16 is set as CISCO has a limitation of
TCPwindowsize of 16 and whenever we increase it to 63 the server then
begins to timeout server requests and no backups happen.
Lawrie Scott
For: Persete
Hi Matthias!
Have you changed the MAX_SESSIONS and the SESSIONS parameters in your
init.utl file? The default is just one session.
Also check if you have RL_COMPRESSION set to YES.
Kindest regards,
Eric van Loon
KLM Royal Dutch Airlines
-Original Message-
From: Matthias Feyerabend [mailt
I4m using multiplexing 3 and RL Compression, some sessione with two LTO
drives and others with one LTO drive.
>From: "Davidson, Becky" <[EMAIL PROTECTED]>
>Reply-To: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re:
How many threads are you using?
What multiplexing are you using?
Are you using compression?
Becky
-Original Message-
From: Jorge Rodriguez [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 29, 2001 1:40 PM
To: [EMAIL PROTECTED]
Subject: Poor Performance in SAN with TDP for R/3 AIX
Hi
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