Tag Archive for: Dawn May

Dawn May

Simplify with Subsystems

/0 Comments/in , , /by

IBM iA major differentiator of the IBM i operating system is the use of subsystems to separate workloads, often for managing memory and optimizing performance. While those are still valid reasons for separating work into multiple subsystems, today’s large memory sizes and fast processors reduce the need to optimize performance in this way.

In this article, I’ll explain how subsystems can make today’s web-oriented application workloads much easier to manage. Read more →

Alan Seiden

IBM i performance tools are for developers, too

/1 Comment/in /by

At last Friday’s OCEAN conference in Costa Mesa, Calif., IBM’s Dawn May and I presented “The Art of Performance Diagnostics,” showing how we’ve used tools that are free (Performance Data Investigator) and low-cost (Job Watcher) and included with IBM i to identify and resolve performance bottlenecks that would have been difficult using traditional green-screen tools alone.

One audience member said, “Developers should know about these tools! They aren’t just for system administrators.” With these tools and with documentation such as the IBM i Performance FAQ, performance expertise is within reach of developers as well as sysadmins.

How do IBM i performance tools help developers to be more effective? Developers can:

  • Respond to any reported slowdowns by looking at recent performance data. IBM i captures performance statistics transparently, enabling developers or admins to “go back in time” to look at past performance.
  • Even better, identify and resolve problems proactively during testing, rather than waiting for users to report problems.
Speakers Alan Seiden and Dawn May presenting The Art of Performance Diagnostics for IBM i at the OCEAN conference, July 17, 2015. Photo by Matthew Murtha

Alan Seiden and Dawn May presenting The Art of Performance Diagnostics for IBM i at the OCEAN conference, July 17, 2015. Photo by Matthew Murtha