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frequency, then you must increase the collection period for all the metrics classes.

However, you must ensure that you have adequate machine resource.

WINDOW_PERIOD is measured in seconds. The values are 900 (default) and 300 for

15-Minutes and 5-Minutes periods respectively. However, on special mix period,

you must set the value at 900 (15 Minutes)

WAVE_PERIOD is an internal window sliding period that is measured in seconds. This

value must be non-zero integer, and a denominator value for WINDOW_PERIOD. The

default value is 300 for 5 Minutes. The default value is recommended for most of

the scenarios. Therefore, you change the default value only when you have a

strong reason.

ACCOUNTING_WAIT_DURATION or PERFORMANCE_WAIT_DURATION is the amount of time to

wait for complete records for a period before writing to the CSV file. The

ACCOUNTING_WAIT_DURATION parameter is used for the accounting classes and the

PERFORMANCE_WAIT_DURATION parameter is used for the performance classes.

However, both the parameters function the same way. This value must be divisible

by WAVE_PERIOD. The default value is 300 for 5 Minutes.

For example, if ACCOUNTING_WAIT_DURATION and WAVE_PERIOD is 300, then the job

will buffer records for one sliding window period (ACCOUNTING_WAIT_DURATION and

WAVE_PERIOD), while the WINDOW_PERIOD is 900

Scenario 1

01:31 Received 100 accounting records with timestamp of 01:01 (Rounded down

to its window period: 01:00)

01:32 Received 200 accounting records with timestamp of 01:01 (Rounded down

to its window period: 01:00)

01:40 WAVE_PERIOD is triggered.

01:42 Received 200 accounting records with timestamp of 01:17 (Rounded down

to its window period: 01:15)

01:45 WAVE_PERIOD is triggered. There are no new records for the 01:00 period

because the wait period is 1 sliding window. The records for the 01:00

period will be written to the CSV file.

Scenario 2

01:31 Received 100 accounting records with timestamp of 01:01 (Rounded down

to its window period: 01:00)

01:32 Received 200 accounting records with timestamp of 01:01 (Rounded down

to its window period: 01:00)

01:40 WAVE_PERIOD is triggered.

01:42 Received 200 accounting records with timestamp of 01:17 (Rounded down

to its window period: 01:15)

01:45 WAVE_PERIOD is triggered. There are no new records for the 01:00 period.

The records for the 01:00 period will not be written to the CSV file.

01:46 Received 200 accounting records with timestamp of 01:19 (Rounded down

to its window period: 01:15)

01:50 WAVE_PERIOD is triggered. There are no new records for the 01:00 period

because the wait period is 1 sliding window. The records for the 01:00

period will be written to the CSV file.

Chapter 10. Modifying the collection strategy 67

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