9.6.1 Specifying thresholds for compaction effects

You can specify thresholds for compaction effects on cache data files. The following figure provides an overview of thresholds for compaction effects.

Figure 9‒3: Overview of thresholds for compaction effects

Approach

The compaction effects depend on the cache data file. By specifying a threshold when you execute the eztool compaction command, you can perform compaction on certain cache data files, for example, that will yield desired compaction effects.

You can use the eads.command.compaction.effect.threshold parameter in the command properties to specify a threshold of compaction effects that is to be set when the --threshold option is omitted from the following commands:

• eztool listecf command

• eztool compaction command

In this figure, cache data files 2 and 5 yield at least the threshold of compaction effects. If the eztool compaction command is executed with the --threshold option omitted, cache data files 2 and 5 become subject to compaction processing.

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