Buffer Cache Test

This test monitors the usage of the system's buffer cache. This test is disabled by default.

Target of the test : A Solaris

Agent deploying the test : An internal agent

Outputs of the test : One set of results for every server being monitored

Configurable parameters for the test
  1. TEST PERIOD - How often should the test be executed
  2. Host - The host for which the test is to be configured
Measurements made by the test
Measurement Description Measurement Unit Interpretation

Cache lookups

Indicates the number of lookups to the buffer cache during the last measurement period.

Number

 

Cache hits:

 

Indicates the number of hits from the buffer cache during the last measurement period.

Number

 

Buffer cache hit ratio:

Indicates the ratio of cache hits to total lookups during the last measurement period.

Percent

A value close to 90% is good.

Buffers locked:

Indicates the number of buffers locked during the last measurement period.

Number

 

New buffer requests:

Indicates the number of new buffer requests issued during the last measurement period.

Number

 

Waits for buffer allocations:

Indicates the number of buffer allocation requests during the last measurement period that had to wait

Number

This value should be close to 0 for optimal operation.