Statistics in the VM Container 

Use

Statistic records are very useful for searching for performance bottle necks. In an SAP system a dialog statistic record is written for each dialog step. This contains a row of subrecords, for example, RFC subrecord or VM Container Statistic Record. The records are normally kept 48 hours in the working directory in each application server, and after this time they are aggregated. The statistic records are used for retrospective analysis.

Features

Various analysis tools are available. This document covers the tools to analyze the VM Container based on the statistic records. This involves transactions STAD and ST03, and report STATDUMP.

Workload Monitor (ST03)

In the Workload Monitor (transaction ST03) you will find the following extensions for running the VM Container:

Extension for the Workload Overview: Here you can see the VMC-related columns on the far right:

○     # VMC Call: Number of calls to the VM Container

○     S VMC CPU: Total CPU time used

○     S VMC Elaps: Total elapsed time

○     Ø VMC CPU and Ø VMC Elap: Average values for CPU time used and elapsed time used

There is also the new task type AUTOJAVA, the equivalent of Autoabap (ABAP batch job run periodically).

Extension for the Time Profile: Same as with the workload the time profile is extended by the above fields. The total times (starting with S) are in seconds; the average times (starting with Ø) are in milliseconds.

• VMC statistics display: The VM Container has its own analysis view. For more information see Displaying the VMC Profile.

Workload Monitor (STAD)

In the SAP workload overview (transaction STAD) you can see all the statistical main records of a specific user (or all users) and/or clients on selected application servers.

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For more information see VMC Statistics in the Workload Monitor.

Statistics Transport (STATDUMP)

Report STATDUMP triggers a statistics dump. Call transaction SE38 and run the report.

You will get the raw data of all statistic records from the current application server.

You can restrict the search to a user, to a time, or to a work process. Generally this is not an appropriate method for evaluating statistic records. But for reasons of completeness STATDUMP is still mentioned here.

The VM Container statistic record is of type 1F and can be found with the following character string: rectype .......... 1F

All times are in microseconds (µs), the memory is always specified in bytes.