A new customer story features Celanese, a global tech leader in the production of specialty materials and chemical products used in most major consumer and industrial applications. I found this story especially interesting due to the innovation engrained in their culture and the way Celanese takes advantage of HP Converged Infrastructure solutions to create the foundation that encourages this innovation to flourish.
One of the challenges in a Mission Critical environment is managing application response time. In one of my past roles, I was a product manager for HP Insight Dynamics - VSE Workload Management for HP Integrity Servers (a.k.a. Global Workload Manager), HP-UX Workload Manager, and HP Secure Resource Partitions (a.k.a. Process Resource Manager), now all part of HP Insight Dynamics - VSE.
One of the things that we worked on, particularly with the workload managers, was assigning enough resources to each workload to maintain the appropriate service levels. This turned out to be a lot of work, especially when you consider how many applications run on HP-UX 11i v3. We found from an HP-UX 11i and server perspective that it was easier to instrument CPU utilization as a proxy for application performance. It turns out that response times were usually consistent until CPU utilization was above 95%. If we conservatively set the CPU utilization threshold at 80%, and then add additional CPU resources, the application normally had a consistent response time.