3.59.36 TmS9SessionDuration

Measurement ID

11426

Measurement Group

P-DRA Diameter Usage

Measurement Type

Simple

Measurement Dimension

Arrayed

Description

Histogram of normally terminated S9 session durations.

Collection Interval

5 min

Peg Condition

When an S9 session record is removed, the appropriate histogram instance shall be incremented by 1.

Measurement Scope

Network, Place Association, Resource Domain

Recovery

1. This measurement shows a histogram of S9 session lifetimes, providing information to assist in predicting the duration of a session SBR Database Reconfiguration.
   Histogram measurements consist of 101 array entries:

   • 0 – Overflow. Incremented if duration is greater than 9,830 minutes
   • 1-5 – 1 minute buckets. Incremented for durations between 0 and 5 minutes.
   • 6-10 – 5 minute buckets. Incremented for durations between 0 and 30 minutes.
   • 11-15 – 10 minute buckets. Incremented for durations between 30 and 80 minutes.
   • 16-20 – 30 minute buckets. Incremented for durations between 80 and 230 minutes.
   • 21-100 – 120 minute buckets. Incremented for durations between 230 and 9,830 minutes.

   A session SBR Database Reconfiguration cannot complete normally until all session records for all supported Diameter interfaces have migrated. As a result, the session duration histogram for each interface being used must be examined to determine which interface has the highest average session duration. This value can be used to predict the likely duration of the reconfiguration.