Each chart image generated with view #2 displays the CPU time used by synchronous web requests at the SYSID level (CSV data extracts 1 and 2), Web Server level (CSV data extracts 3 and 4), and Request Type level (CSV data extracts 5 and 6).
CPU time is displayed using stacked vertical bars, with each bar segment indicating CPU use for a specific processor type (CP, zIIP, or zAAP), and if on a CP processor, the portion, if any, that was zIIP or zAAP processor eligible. The count of synchronous requests processed is displayed using a horizontal line.
The level of detail provided in each of the six CSV data extracts is similar to that described above for Chart View #1. For more detailed information about the data elements displayed with Chart View #2, refer to the DATA EXTRACTS section below.
The second sample above is an example of Chart View #2, generated by the Daily Web Sync Reqs – Web Server by HOUR CSV data extract (4). This chart shows the hourly CPU use for web server CAP701W hosted on SYSID CA31 on an IBM 2827-615 (zEC12 CPC with 15 sub-capacity CP engines) for one day. You can see that the majority of CPU time used by synchronous requests occurs on zIIP processors (green bar segments). About 1/4th to 1/3rd of CPU use occurs on CP processors (blue), and access to zIIP processors is very good—because very little zIIP eligible CPU time was executed on CP processor engines (red bar segments). The number of synchronous requests processed each hour is shown with a horizontal line, and shows that CPU use per request is consistent—evident from the strong correlation observed between the number of requests processed and the CPU time used.
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