Cheryl Watson's Tuning Letter

zEDC Metrics Changes on z15 and z16 Processors

Learn how moving the compression function from PCIE-attached zEDC cards to the zEDC Accelerator has resulted in changes (reductions) in the metrics that are available.

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Blog

Cleaning up the SAN Fabric: Getting Your House in Order Part Two

Cleaning up SAN fabric zones and storage array masking views are often a forgotten part of good storage hygiene. Although unused zones and masking views may seem harmless, they pose an availability risk to your environment on multiple fronts.

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Webinar

Implementing Asynchronous Duplexing in a Production Db2 Lock Structure - User Experience

Analyze the performance impacts of implementing asynchronous duplexing for Db2 lock structure in a high volume Db2 data sharing environment.

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Blog

Benefits of Storage Capacity Reclamation: Getting Your House in Order Part One

Unused volumes increase the likelihood of mistakes, can affect replication SLAs, can impact the cost of offsite storage, or may be stored on the wrong tier of storage.

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Cheryl Watson's Tuning Letter

How to Achieve Higher Availability and Lower Performance Costs with Asynchronous Db2 Lock Structure Duplexing

In this Cheryl Watson Tuning Letter Reprint, Todd Havekost and Frank Kyne detail the unexpected performance benefits gained after one site implemented Asynchronous duplexing.

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Video

Modern Alternative to SAS Reports for SMF Reading and Mainframe Reporting

For decades, the only way to read SMF data was to create your own SAS code that would generate output from SMF that could be understood. Technological innovations such as AI has made writing your own custom SAS code for SMF reports unnecessary for all but the most esoteric reports.

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Webinar

The Most Comprehensive Mainframe Analytics Solution: IntelliMagic Vision

A comprehensive solution that is suitable for everyone from executives looking for cost savings and managing availability risks, to the experienced analyst looking for the most detailed insights.

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Webinar

Imagine How Much You Can Learn Exploring Db2 Accounting Data | IntelliMagic zAcademy

This session suggests capabilities to keep in mind as you seek to modernize how you access and analyze your Db2 SMF data, both to promote rapid learning as well as boost the value you derive from your data.

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Blog

Should I Turn WLM I/O Priority Management On or Off?

For most shops, several key elements and options of the WLM service policy still remain unchanged from decades ago. This blog addresses whether one option, “I/O Priority Management” should be.

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Video

Db2 Accounting Data: Customized Dashboard Recap

Customized Db2 Accounting dashboards can promote collaboration across teams, as well as serve as a springboard for additional analysis as the views are applied to other time intervals.

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Video

Db2 Accounting: Exploring Other Metrics in Accounting Data by Plan

A sampling of several types of metrics available in the Db2 Accounting data viewed by plan such as rate of commits, number of rollbacks, volume of log data, volume of SQL statements by type, and more.

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Video

Db2 Accounting: Exploring Database Sync I/O Activity

Avoiding database sync I/Os (achieved when getpages are satisfied from data already residing in a buffer) plays a prominent role in Db2 performance and efficiency.

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