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| March 16, 2007 |
z/VM V5.2 (or later) is a prerequisite for running z/VSE V4.1, V4.2 or V4.3 under VM.
If you IPL z/VSE V4.1, V4.2 or V4.3 in a guest system of z/VM version 4 or z/VM 5.1, you may experience severe performance problems. Because of that the following message is issued:
0J86I WARNING: VM RELEASE NOT SUPPORTED BY VSE 4.1 - Z/VM 5.2 OR LATER REQUIRED
If you receive this message, you must urgently upgrade your VM system to z/VM 5.2 or a later release. |
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| November 1, 2006 |
VSE CPU Monitor Tool
The VSE CPU Monitor Tool is intended to help customers to measure the CPU utilization of their VSE system over a period of time. Especially when you plan for a processor upgrade it is very important to know the CPU utilization of your VSE system over a day or a week. This helps you to estimate the size of the new processor.
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| October 25, 2005 |
Important considerations when planning for a harware upgrade:
Although z/VSE supports up to 10 processors, it is not recommended to run z/VSE with more than 3 processors active. In most cases a z/VSE system runs best on a uni-processor system. So its better to use a larger uni-processor than multiple smaller processors, even if the sum of the processors would result in the same capacity. |
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| October 25, 2005 |
IBM Processor Capacity Reference for IBM System z9 and eServer zSeries (zPCR)
zPCR is designed to provide capacity planning insight for IBM System z9 and eServer zSeries processors running various workload environments. VSE customers are encouraged to use the zPCR tool with the z/VSE workloads Batch, Online or Mixed for capacity planning.
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| VSE performance documentation |
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| Stabilized performance documents |
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VSE/ESA Version V2.5 Performance Considerations (420KB)
Wolfgang Kraemer, IBM |
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CICS Transaction Server for VSE/ESA Performance Considerations (580KB)
Wolfgang Kraemer, IBM and Dan Janda |
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VSE/ESA TCP/IP Performance Considerations (520KB)
Wolfgang Kraemer, IBM |
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VSE/ESA Hints for Performance Activities (345KB)
Wolfgang Kraemer, IBM |
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VSE/ESA Turbo Dispatcher Performance (419KB)
Wolfgang Kraemer, IBM |
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VSE/ESA Version 2 Performance Considerations (754KB)
Wolfgang Kraemer, IBM |
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VSE/ESA I/O Subsystem Performance Considerations
(823KB)
Wolfgang Kraemer, IBM and Hanns-J. Uhl, IBM |
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VM / VSE Performance Considerations (181KB)
Wolfgang Kraemer, IBM |
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DFSORT/VSE Performance Considerations (100KB)
Wolfgang Kraemer, IBM |
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VSE/ESA V1 Performance (VSCR, DIM, VDISK) (241KB)
Wolfgang Kraemer, IBM |
| Disclaimer |
|
The information contained in these documents has not been submitted to any formal IBM test and is
distributed on an "AS IS" basis without any warranty either express or implied. The use of this
information or the implementation of any of these techniques is a customer responsibility and
depends on the customer's ability to evaluate and integrate them into the operational environment.
While each item may have been reviewed by IBM for accuracy in a specific situation, there is no
guarantee that the same or similar results will be obtained elsewhere. Customers attempting to adapt
these techniques to their own environments do so at their own risk.
In these documents, any references made to an IBM licensed program are not intended to state or imply
that only IBM's licensed program may be used; any functionally equivalent program may be used instead.
Any performance data contained in these documents was determined in a controlled environment and,
therefore, the results which may be obtained in other operating environments may vary significantly.
Users of these documents should verify the applicable data for their specific environments.
It is possible that this material may contain reference to, or information about, IBM products
(machines and programs), programming, or services that are not announced in your country. Such
references or information must not be construed to mean that IBM intends to announce such IBM products,
programming or services in your country.
IBM does not make any representations or endorsement of any of the products or services
which are provided by non-IBM sources. That information was provided by the named source.
In any event, IBM shall not incur any liability by listing the following information.
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