7.3 UX Virtual Memory

The UX Virtual Memory object provides counters for monitoring the virtual memory usage on UNIX systems.

For counters that accept a processor instance, an individual CPU identifier is an integer: 0, 1, 2, and so on. For example, to monitor the total amount of swap space on your disk for CPU 1 on an HP-UX computer, type:

UX Virtual Memory|Avail Swap|1

To monitor a counter that does not accept a processor instance, such as the total free memory in KB, use the _Total instance and type one of the following:

UX Virtual Memory|Free List|_Total
UX Virtual Memory|Free List

The following table describes the counters for the UX Virtual Memory object.

Counter Name

Description

Platforms

Avail Swap

Total amount of swap space available on your hard disk. For HP-UX, specify one of the following as the instance:

  • an individual CPU identifier

  • _Total (for all instances).

For Solaris, Linux, and AIX, specify _Total as the instance.
  • AIX
  • Linux
  • HP-UX
  • Solaris

Buffers

Size of memory used by system buffers in KB. Specify _Total as the instance.

Linux

Cached

Size of memory being cached in KB. Specify _Total as the instance.

Linux

Free List

Total amount of free memory in KB. Specify _Total as the instance.
  • AIX
  • HP-UX
  • Solaris

Page Reclaims

Number of page reclaims per second. Specify _Total as the instance.
  • AIX
  • HP-UX
  • Solaris

Page Freed

Number of pages freed per second. Specify _Total as the instance.
  • HP-UX
  • Solaris

Memory Free

Memory available on the heap in KB. Specify _Total as the instance.
  • Linux
  • HP-UX

Memory Shared

SIze of shared memory in KB. Specify _Total as the instance.

Linux

Minor Faults

Number of minor page faults per second. Minor page faults occur when the CPU cannot find memory because it is swapped out and must be swapped in again. Specify _Total as the instance.

Solaris

Total Reclaims

Total number of reclaims since the computer was last booted up. Specify _Total as the instance.
  • AIX
  • HP-UX
  • Solaris

Reclaims From Free List

Number of reclaims from free list per second. Specify _Total as the instance.
  • HP-UX
  • Solaris

Zero Fill Page Faults

Number of zero fill page faults on demand per second. Specify _Total as the instance.
  • AIX
  • HP-UX
  • Solaris

Page Faults

Number of page faults (of all kinds) per second. Specify _Total as the instance.

AIX