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Appendix A Commands of Performance Monitoring/Optimization Function
period of summarizing are provided as additional information. If the input file is a statistic
information history file (primary summarizing and direct secondary summarizing), I/O count in each
logging Interval is divided by each logging Interval time, and time density of I/O count is calculated.
Then, the maximum and minimum values in the period of summarizing are selected. If the input
file is a primary summarized file (secondary summarizing), the maximum and minimum values in
the period of summarizing are selected from the additional information recorded in the input file.
Maximum and minimum values of Average Transfer Rate
The maximum and minimum values of average transfer rate in each logging Interval in the period of
summarizing are provided as additional information. If the input file is a statistic information
history file (primary summarizing and direct secondary summarizing), the maximum and minimum
values in the period of summarizing are selected from the average transfer rates in the logging
Intervals. If the input file is a primary summarized file (secondary summarizing), the maximum
and minimum values in the period of summarizing are selected from the additional information
recorded in the input file.
Maximum and Minimum Values of the Average Busy Ratio
The maximum and minimum values of the average busy ratio in each logging Interval in the period
of summarizing are provided as additional information. If the input file is a statistic information
history file (primary summarizing or direct secondary summarizing), the maximum and minimum
values in the period of summarizing are selected from the average busy ratio in the logging Intervals.
If the input file is a primary summarized file (secondary summarizing), the maximum and minimum
values in the period of summarizing are selected from the additional information recorded in the
input file.
Other time information
Statistic information acquisition time is obtained from the statistic information acquisition time
contained in the last statistic information record in the period of summarizing. Output time of the
statistic information record is obtained from the output time of the last statistic information record in
the period of summarizing.
Configuration information
When configuration information indicating a configuration change is detected, the configuration
information is written to the statistic information summarized file at the point in time. However,
the auxiliary configuration information contained in configuration information is not written to the
statistic information summarized file.
Nickname change information
When nickname change information is detected, it is written to the statistic information summarized
file at the point in time. Summarizing process continues. Therefore, when nickname change
information exists within the period of summarizing, the nickname change information is written to
the file earlier than the statistic information summarizing the period.
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