EvPduPoolPeak

Measurement Group: MP Performance

Measurement Type: Max

Measurement Dimension: Single

Description: The peak Diameter PDU Buffer Pool utilization (0-100%) measured during the collection interval.

A PDU is allocated to each message that arrives at an MP and is de-allocated when message processing completes. This measurement is useful for evaluating whether persistent network problems exist. In general, PDU buffers are engineered to match the processing capacity of the MP. If network problems exist, delaying the off-loading of egress messages from the MP, then PDUs/messages will sit in internal Diameter queues.

Collection Interval: 5 min

Peg Condition: The maximum Diameter PDU Buffer Pool utilization sample taken during the collection interval.

Measurement Scope: Server Group

Recovery:

  1. If both the peak and average measurements for multiple MPs within a Network Element are consistently near the recommended maximum engineered capacity of an MP when the ingress message rate and/or Diameter process CPU utilization measurements are below the recommended maximum engineered capacity of an MP, then a network (IP or Diameter) problem may exist. Looking at these measurements on a time of day basis may provide additional insight into potential network problems.
  2. If the peak and average for an individual MP is significantly different than other MPs in the same Network Element then an MP-specific software problem may exist (e.g., a buffer pool leak).
  3. Contact My Oracle Support (MOS) for assistance if needed.
Parent topic: Message Processor (MP) Performance measurements