From my experience the compare function uses alot of CPU resources. You
might want to try running it when the CPU usage of the lpar is less.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "gsg"
We&
Disconnect time can also show up as synchronous remote copy (SRDF). If the
links are saturated it will elongate the DISC time and therefore the RT.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Ron Ha
The first thing you have to determine is the breakout of the DASD RT. What
is the RT and how much of it is due to connect vs. disc vs. IOSQ vs. pend.
From there you can start understanding if you have an I/O RT problem and
what might be causing it.
Joel Wolpert
Performance and Capacity
st is
usually hidden in separate buckets so that the people making the decision to
move from the MF to UNIX/LINUX servers still get gold stars for saving
costs.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message - >
Chase, Jo
Accenture was originally the IT consulting division of Arthur Anderson. That
is why they took the name Anderson Consulting. They then were spun off from
Arthur Anderson as a separate company and took the name Accenture.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE
You could look into "Cyberfusion Integration Suite" from Proginet.
Their website is http://www.proginet.com/file-transfer-products
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Juergen Kelle
http://www.networkworld.com/news/2009/102909-mainframe-pennsylvania.html
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
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The link below doesn't work when you click on it. Try this:
http://mainframejobs.zjournal.com/a/jbb/find-jobs
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
Just to answer
tware
costs.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Rick Fochtman"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Tuesday, September 29, 2009 7:18 PM
Subject: Re: Just installed a
I second the suggestion for IAM. It is a great product that will
significantly improve your performance over VSAM.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Robert Matthews"
Newsgroups: bit.listser
http://www.mainframezone.com/bobthomas/mainframe-hall-of-fame/
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
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Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
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Works for me.
http://www.reuters.com:80/article/pressRelease/idUS97967+14-Sep-2009+BW20090914
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Ted MacNEIL"
Newsgroups: bit.listserv.ibm-main
To:
Sen
http://www.ibmsystemsmag.com/mainframe/enewsletterexclusive/26535p1.aspx
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
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Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: ww
That is correct, however, depending on the implementation DB2 can consume
significant CPU resources, therefore a 10-20% increase can have a
significant impact on the overall machine.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original
If I recall correctly there is a big hit (10-20% overhead) for the first 2
systems in a sysplex when doing DB2 datasharing. After that the overhead
drops drastically.
For other sysplex implementations the overhead can be much less.
Joel Wolpert
Performance and Capacity Planning consultant
get
more real memory to satisfy all of your service levels.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Tommy Tsui"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Wednesday, September 02, 2009 9:12
Works for me.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Gibney, Dave"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Thursday, August 20, 2009 3:47 PM
Subject: Re: z/OS 1.11 Manuals and New
Thanks. I still see this as a useful tool.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Rick Fochtman"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Thursday, August 20, 2009 1:45 PM
Subject: Re: Whe
Sorry for the ignorance. What is an ELA (enterprise licensing agreement?)?
Why would this cause you to dismantle your sysplex?
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Arthur Gutowski"
Does it also tell you what program invoked the module?
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Rick Fochtman"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Thursday, August 20, 2009 12:49 PM
S
ge on
the Linux servers and on the IFL and then you can estimate how much IFL CPU
capacity you would need to support your Linux workload.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "BOB COSBY&quo
They should be able to keep the IFL without maint. This way if they ever
decide they want to use it again all they have to do is re-instate the
maint.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Mark
I believe that once you buy the IFL you own it. If you drop the IFL when you
go to the new machine there is no discount.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Frank Swarbrick"
Newsgroups: bit.li
What you said is true but by starting with the data in the SMF you can then
drill down. If a program is called via CALL or any of the other methods the
CPU will be shown in the SMF for the program in the JCL pgm=.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE
You can run into SOS and maxtask issues if your transactions are taking
longer than they should. This could be due to CPU constraints among other
reasons.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "
If you recently created a service class for your HOTBATCH see if the CICS
SOS issue started around the same time. Depending on how this is setup vs.
the CICS service class this might have caused the problem. You want to make
sure that the HOTBATCH cannot steal cycles from the CICS.
Joel
Longer elapsed time for the same amount of CPU implies a bottleneck either
waiting for CPU, waiting for I/O, or paging.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "George Kozakos"
Newsgroups: bit.li
iew if you are trying to reduce overall mainframe CPU
consumption.
Just my .02.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original Message -
From: "Jan Vanbrabant"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Tuesday, Aug
While hard and soft capping effects the whole lpar WLM resource groups can
be used to only effect a specific workload; which depending on the product
can satisfy their requirements.
Joel Wolpert
Performance and Capacity Planning consultant
WEBSITE: www.perfconsultant.com
- Original
http://www.itworld.com/software/74638/ibm-aims-system-z-specific-workloads
I found this particularly interesting:
System z sales have plummeted during the economic recession, as companies rein
in capital spending and increasingly turn to cheaper commodity hardware to
support their IT systems. Re
are
charge always over paid each time when we adjust our HMC CPU hard cap
ratio...
On Sat, Aug 15, 2009 at 11:54 AM, Joel Wolpert
wrote:
You set the service units for the soft cap thru the hmc. That is what I
meant.
- Original Message - From: "Ted MacNEIL"
Newsgroups: bit.
You set the service units for the soft cap thru the hmc. That is what I
meant.
- Original Message -
From: "Ted MacNEIL"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Friday, August 14, 2009 9:07 PM
Subject: Re: Cap software CPU utilization
>You can soft cap the lpar through the HMC; or
You can soft cap the lpar through the HMC; or you can set up a wlm resource
group to cap specific workloads.
- Original Message -
From: "Tommy Tsui"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Friday, August 14, 2009 7:46 PM
Subject: Cap software CPU utilization
Hi,
Is there any too
Have you checked RMF to compare CPU usage and I/O performance before and
after the upgrade; specifically the I/O response time. What about the cpu
usage of individual jobs.
- Original Message -
From: "Jousma, David"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Thursday, August 13, 2
You went from more engines to less engines so you can do less concurrent
tasks. More info is needed. Does this happen all of the time? Are there
heavy cpu jobs running at that time? What does RMF Monitor III say as far as
job delays for the tso users having problems?
- Original Message -
I agree that ones has to make intelligent decisions based upon their
environment. I do not endorse capping a shared CF, but if you do not have
the available CPU capacity to dedicated a full CP it might work. However,
you have to be careful or else you can kill production.
- Original Messag
Maybe I am confused, but is looks like this move is using .76% of the CPU of
the program. This is less than 1%. What does the section called (AFAIR) most
highly executed procedures look like.
- Original Message -
From: "Farley, Peter x23353"
Newsgroups: bit.listserv.ibm-main
To:
Sen
ibney, Dave"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Saturday, August 08, 2009 3:27 AM
Subject: Re: DASD: to share or not to share
-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
Behalf Of Joel Wolpert
Sent: Friday, August 07, 2009 12:17
Strobe can also be indexed so that it shows the actual COBOL statements.
This is the most accurate way to use STROBE with COBOL programs.
- Original Message -
From: "Edward Jaffe"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Friday, August 07, 2009 6:46 PM
Subject: Re: z10 and overlappi
Just curiously. Why do you call this an overlapping/destructive move.
- Original Message -
From: "Farley, Peter x23353"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Friday, August 07, 2009 3:49 PM
Subject: z10 and overlapping/destructive moves
I am in the midst of a CPU optimization
Since he is trying to tune a COBOL program how would he accomplish this.
- Original Message -
From: "Bill Fairchild"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Friday, August 07, 2009 5:31 PM
Subject: Re: z10 and overlapping/destructive moves
It certainly can't hurt to change the M
You can configure it so that it is not always polling, and therefore not
soaking up the CPU. In addition, you can set up an lpar weight and cap the
ICF lpar. This will also prevent the ICF from consuming more of the CEC than
you want. All of this being said: I would not recommend that you share
z/OS, z/VM , and LINUX can all run under lpars. In addition, LINUX can also
run under a guest under z/VM. IBM provides something called an IFL
(Integrated Facility for LINUX) that is its own processor (not part of the
general pool) that runs z/VM with LINUX as a guest. This is IBM's solution
fo
We never had a problem with this. The developers need this ability anyways
to debug production problem. And how can you truly test if you are not using
production data. If someone wants to do something illegal they will find a
way. The sysprogs always have the keys to the kingdom. What about the
On the physical level we shared all DASD volumes. On the logical level we
had a separate spool, sms groups, etc. between prod and test. Security
should be handled by your security package (RACF, ACF2, etc.). Performance
has never been an issue. The advantage to sharing is that dev and qa can
re
Correction: IBM is supposed to know what products you have. But even if you
have *ALL for NO89 products that you do NOT have licenses to you can work
with IBM to correct the billing.
- Original Message -
From: "Ted MacNEIL"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Wednesday, July 2
I resolved a similar issue by using WLM resource groups so that a test job
cannot consume too much CPU to effect the overall environment.
- Original Message -
From: "Kelman, Tom"
Newsgroups: bit.listserv.ibm-main
To:
Sent: Wednesday, July 29, 2009 2:54 PM
Subject: Re: Enforcing CPU T
Pat,
If you code *ALL for NO89 products that you do NOT have licenses to there
should be no implication because IBM knows what products you are licensed
for. The bigger issue is if you code *ALL for NO89 products that you DO have
licenses for but are not running on all of the lpars. In this ca
doing any good? I
have MXG and SAS. I can also run RMFPP. I have not really gotten into
performance tuning on this level so I need to try and find the reports that
will help me understand this picture better.
Thanks
Lizette
Joel Wolpert
Director - Performance and Capacity Planning
Shared
What type of mainframe are you running?
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED
To run a CFCC you have to have IBM load the CFCC microcode. Is that free?
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED
This only works for service classes within an lpar. It would not allow you
to cap the machine.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED
The problem with "Defined Capacity" is that it is done at an lpar level.
There is still no way to guarantee that the machine as a whole will not use
more than 28 MSU's.
Why do you want to cap the machine. It makes no sense from a capacity
standpoint. Don't you want to get what
ed by z/OS for
processing the SMF records. I have no idea. Has anyone ever researched
this
and can share some info on it.
Thanks in advance.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
Thanks. This is good info. Does this mean that if I measure the CPU usage
of the SMF address space I will be able to approximate the CPU overhead?
Please do not laugh.
My management is asking me how much overhead is consumed by z/OS for
processing the SMF records. I have no idea. Has anyone ever researched this
and can share some info on it.
Thanks in advance.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED]
- Original Message -
From: IBM Mainframe Discussion List [EMAIL PROTECTED]
Sent: 03/01/2006 01
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED]
- Original Message -
From: IBM Mainframe Discussion List [EMAIL PROTECTED]
Sent: 02/21/2006 07
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED]
- Original Message -
From: IBM Mainframe Discussion List [EMAIL PROTECTED]
Sent: 01/18/2006 06
My question is: if you are happy with Shark why are you looking to switch.
If it is just financial you should be able to leverage the discussions that
you are having with Storage Tek in your negotiations with IBM.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
begin with.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED]
-
This message and its attachments may contain privi
Are you using JES or WLM inits?
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED]
- Original Message -
From: IBM Mainframe Discussion List [EMAIL
Are you running any synchronous remote copy? This can cause it.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED]
- Original Message -
From: IBM
We have a file in which BUFNO=250 is specified on the JCL. The LRECL=260
and the BLKSIZE=27820. Is there any disadvantage to such a large BUFNO in
terms of impacting job elapsed time.
Thanks,
Joel Wolpert
Director - Performance and Capacity Planning
[EMAIL PROTECTED
You could automate the reset Jobname command via an automation product such
as Netview SA.
Joel Wolpert
Director - Performance and Capacity Planning
Shared Data Center
Securities Industry Automation Corporation
2 Metrotech Center
New York, NY 11201
(212) 383-3323
[EMAIL PROTECTED
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