Tuning Letter
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Issues of
Cheryl Watson's Tuning Letter
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Not familiar with the Tuning Letter? Since 1991, we've kept our readers up-to-date with in-depth articles on topics such as Workload Manager, CICS, parallel sysplex, parmlib members, I/O tuning, how to go about processor upgrades, TSO and ISPF tuning, LPAR management, and capacity planning techniques. We print the latest news about new processors, user problems, and important APARS. We include timely information, such as tips on new manuals, key web sites, user Q&As, and our SHARE trip reports. We even publish a CPU Chart of all the S/390 and zSeries processors, showing such data as MIPS by workload and MSUs. For more detailed information about the newsletter and how you can subscribe, please click here.
We invite you to download these representative issues of the newsletter so you can see for yourself the scope and volume of information we provide in Cheryl Watson's Tuning Letter.
2004
No. 2 (58 pages)
When companies started installing z990s, they were often
disappointed in the performance of these new machines. This issue explains
the reasons for the differences between expectations and reality. It also
explains how to properly size a z990.
2001
No. 1 (47 pages)
This issue focuses on tuning catalogs and on Cheryl's
SHARE trip report. In addition you'll find CICS performance tips.
1998
No. 6 (40 pages)
The focus of this issue is called "Processor Upgrades."
It deals with the problems encountered when you move to fewer, but faster
CPs.
Sep/Oct
1992 (40 pages)
This was an issue that we sent out to several potential customers because
it showed the variety of topics we cover in a single issue. This one covers
Batch Application Tuning (Part II), Enqueue Analysis, VLF, LLA and PR/SM
Overhead (by Al Sherkow). The only things that might not be applicable
today are batch LSR and Hiperbatch. (Please note: this file is 3.8 MB
and make take a few minutes to download.)
January
1991 (20 pages)
This is the first Tuning Letter we ever published. The focus
of this issue was "TUNING TSO" and in it you'll find seven different techniques
for tuning TSO subsystems. All are still relevant today.
(You
will need Adobe Acrobat PDF Reader to view these documents.)