Customizing profiling settings for J2EE performance analysis

Usually, for analyzing the performance of J2EE applications, you will select the J2EE Performance Analysis profiling set, which contains the J2EE Performance Analysis profiling type, as shown in the Profiling Type list below. The J2EE Performance Analysis profiling type by default collects data from all types of J2EE components, with no filters. To modify these defaults:

  1. Select the J2EE Performance Analysis profiling type and click Edit.
  2. In the Edit Profiling Set dialog, under Time Analysis, select J2EE Performance Analysis.
  3. On the Components tab, select the types of J2EE components from which you want to collect data.
  4. On the Filters tab, specify the hosts and transactions that you want to monitor. Note: The filters indicate the type of data you do want to collect (that is, they filter in, not filter out). Also see the Note: About Filtering and Sampling.
  5. On the Sampling tab, you can limit the amount of data being collected by specifying a fixed percentage or a fixed rate of all the data to collect. (*ARM)
    • Sample a percentage of all method invocations: The profiler will alternate between collecting and discarding invocations. For example, with a setting of 25%, the first will be collected, the next 3 will be discarded.
    • Sample a specific number of invocations each minute: The first n invocations (where n is the specified value) will be collected, and nothing else will be collected that minute. Thus, you will never receive more than n invocations in any given minute.

    Also see the Note: About Filtering and Sampling.

  6. Click Finish.

Now, when you start profiling, the specified data will be collected.

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