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Cheryl’s List Blog

Home Cheryl’s List Blog Page 6

New CPU Chart, SHARE Presentations, and the Impact of Hurricane Irma

Oct062017frank

Cheryl Watson’s 2017 z Systems CPU Chart Available We just delivered the updated version of our IBM z Systems CPU Chart to our subscribers, with information about the capacity of the new z14 boxes from just about every perspective you could think of. Total MIPS, MIPS per engine, MIPS per MSU, High RNI MIPS, Low…

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Cheryl Watson’s Tuning Letter 2017 No. 2 Published

Jul302017frank

To coincide with the launch of our new Publications website, Cheryl Watson’s Tuning Letter 2017 No. 2 was published on July 24th.  This and future issues will only be available on the new site, but we think that you will agree that this is a much more usable, and mobile-friendly, delivery mechanism than the single…

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New Watson & Walker Publications Website Launched

Jul292017frank

Subscribers to Cheryl Watson’s Tuning Letter will know that we normally create a DVD every year, containing the Tuning Letters and other Watson & Walker material since Cheryl’s first Tuning Letter was published in 1991. This year, to celebrate the universe-wide migration to ‘the cloud’, we are replacing the DVD with a new subscriber-only online…

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IBM’s z14 and z/OS 2.3 Announcements

Jul272017cheryl

IBM’s New z14 By now you’ve all heard all the marketing hype about IBM’s newest mainframe, the z14. What we’d like to do is look at the announcement from the techie’s point of view. First, there is a lot of confusion over the difference between the z14 and ‘IBM Z’. This confusion is easy to…

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IBM zCouncil and z/OS Security Health Check Offering

Jun262017frank

IBM Customer Outreach (Free local education) [From Cheryl] I was very pleased to be invited by Lih Wang of IBM to present at their Chicago z Systems Customer Council event on May 9th. I had a great time and got to meet over a hundred local z customers and IBMers. I learned a lot, and…

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IBM Technical Bulletin, anyone?

Jun232017frank

Hopefully all our readers are familiar with the beloved IBM Redbooks.  But our younger readers might not be familiar with Redbooks’ older cousins – Orange books, Yellow books, Blue books, and Green books.  These books (called IBM Technical Bulletins) were very similar in concept to Redbooks, however they were published by IBM’s Systems Centers rather…

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CICS TS 5.3 Red Alert

Jun212017frank

IBM announced a Red Alert for CICS TS 5.3 on June 19, 2017 (the first one in nearly 7 months).  This Red Alert is the result of a bug whereby two CICS transactions can be given the same Unit of Work ID (UOWID). The problem arises when the duplicate UOWIDs are passed to a subsystem…

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Considerations for Over-Provisioning z Systems CPCs

Jun212017frank

Our Tuning Letter subscribers have probably read our article on A Holistic Approach to Capacity Planning in our Tuning Letter 2015 No 4 (pages 55-75). Or you might have seen our SHARE presentations (one is The Cheryl & Frank zRoadshow, SHARE 2016 in San Antonio) where Frank discussed activating more CPs in order to reduce…

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Latest Tuning Letter Emailed to Subscribers

Jun052017frank

We emailed Cheryl Watson’s Tuning Letter 2017 No. 1 (140 pages) to our subscribers on May 10.  This is a summary of the main articles: This issue included an article by one of our readers, Ronald Kristel (with invaluable input from IBM’s Tom Wasik) about selecting the optimal JES2 checkpoint configuration. If you are fed…

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SHARE Presentations Added to Website

Mar192017cheryl

We had a great week at the SHARE conference in San Jose.  Frank had 125 sessions that he decided he wanted to attend (he didn’t quite achieve that goal!).  We had a vendor session for our new SCRTPro service, presented two EXECUforum sessions in addition to our zRoadshow session on Friday (thanks to all those that…

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