System Reporter 2.8 | 3PAR System Reporter User’s Guide |
9.3.2 Schedule
The schedule consists of three components: dates, weekdays and hours. You can choose multiple values of each of these components to create a schedule for when each adaptive optimization configuration executes.
NOTE: Adaptive optimization configurations may be scheduled to run at intervals that are shorter than their measurement hours (see 9.3.3 Measurement Hours on page 9.9). However, regions that have been moved are not considered in the analysis for subsequent iterations until at least the measurement interval has expired.
CAUTION: There is single regionmover process for each InServ array, and it completes analysis and data movement for all the adaptive optimization configurations scheduled for the current hour before proceeding to the next hour. If the time taken to complete the current configurations is so long that the hour is past the execution time for the configurations scheduled next, it may skip those configurations. You should therefore ensure that configurations are either executed together or sufficiently spaced.
9.3.3 Measurement Hours
You can specify the number of hours that you want to consider in order to determine the activity level of regions. Control of the measurement duration is important especially for applications whose performance is not uniformly important throughout the day.
For example, consider an application whose performance is important only during the first few hours of a business day (Monday through Friday, 8 am through 11 am) and then not particularly important throughout the rest of the day, though not necessarily idle the rest of the day. If we measure the application throughout the day, the tiering will consider the performance during times that are not important and as a result the performance during the important times of the day may not be optimal. We can achieve optimal results by scheduling adaptive optimization execution for 11 am Monday through Friday with a measurement interval of 3 or 4 hours. That way only performance measurements during the important period for the application will be considered.
Configuring Adaptive Optimization | 9.9 |