PE average response times

The figure in this topic shows the average response times for PE operations at different workload levels.

All PE operations are grouped into six categories (Query / Reassign / Update / Dispatch / Launch / Logon) and the response times are an average value for these groups. For this particular workload using direct PE Java API calls, response times below 200 ms are expected and good.

Line graph showing average response times non weighted for PE operations — Figure 1. Non-weighted average response times for PE operations

Observations

The average response times are stable and low over most of the workload range. At the highest workload level (above 10), at the CE/PE guest CPUs near maximum utilization, PE API response times also start to increase (while remaining well below 1 second). Close to the maximum CPU utilization processes on the CE/PE server are waiting on CPU power which results in higher response times.

Adding further virtual CPUs reduced response times for both CE and PE operations, allowing scaling to higher workload levels with good response times, as demonstrated in the following section.