Processor Topology – A Picture Says 1024 Words
We all know that our z/OS LPARs rely on processors to execute the code to run our business. We also need to plan on having sufficient resources available for our workload when we design our LPARs.
Deriving Value when Deluged with Data (aka CICS Transaction Reporting)
When searching for the response time of certain CICS transactions, you need an easy and effective way to filter out the noise and rapidly find what you’re looking for.
Conserving MSUs – Déjà vu All Over Again
In the past, you probably only focused on MSU usage during your peak 4HRA. Now, thanks to IBM's Enterprise Consumption, paying more attention to MSUs at non-peak times literally “pays” in terms of saving real money.
Root Cause Analysis for z Systems Performance – Down the Rabbit Hole
Root cause analysis for z Systems can be a confusing and timely process. With the right approach, more time is spent resolving the problem than finding it.
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.
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.
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.
IFCID 199 – “DNA” for Investigating Db2 Buffer Pool Performance
Db2 IFCID 199 data provides buffer pool statistics at the dataset level. Integrating this with SMF 42 dataset I/O performance data provides extensive insights into I/O activity and response time data at the Db2 buffer pool and database levels.
z/OS Memory and Db2 – A Match Made in Heaven
Leveraging z/OS memory so that almost all data referenced by Db2 already resides in a buffer pool significantly improves performance and CPU efficiency.