Real Memory Consumed By Buffers And Cache (UsedByBuffersAndCache)


This parameter reports the real memory used by file-system buffers and cache. AIX systems allocate free memory dynamically for use by file-system buffers and page cache rather than wasting the physical memory. Whenever applications need more memory, the memory used by buffers and cache is allocated for use by applications. Hence, the memory consumed by buffers and cache is treated as free memory rather than used memory, on these systems.

The value for this parameter is reported correctly only when the kernel module, bunyip, is loaded on the system. If this module is not loaded, the value for this parameter is reported as zero. This parameter is not available on HP-UX and Solaris, in the PSL collection mode.

 PATROL properties

Attribute

Default value

Application class

IAK_Memory

Command type

Not applicable

Platform

All platforms

Icon style

Graph

Unit

MB

Border range

Undefined

Alarm1 range

Undefined

Alarm2 range

Undefined

Scheduling (poll time)

Inherits poll time of collector

Active at installation

Yes

Parameter type

Consumer

Value set by

Central Monitoring Administration properties

Property

Default value

Monitor type

Memory

Key Performance Indicator

No

Graph by default

No

Availability

No

Statistical

Yes

Config

No

Response time

No

Monitor for
abnormalities

No

Normal distribution

Yes

Application collection status

No

Delta

No

Value format (%d)

No

 

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