Memory: Dynamic Memory Usage

This statistic gives a high-level view of memory (DRAM) consumers, updated every second.

When to Check Dynamic Memory Usage

This can be used to check that the filesystem cache has grown to consume available memory.

Dynamic Memory Usage Breakdowns

Available breakdowns:

Table 6-20 A Breakdown of Dynamic Memory Usage

Breakdown Description

application name

See the following table.

Application names:

Table 6-21 Application Names

Application Name Description


The ZFS filesystem cache (ARC). This will grow to consume as much of available memory as possible, as it caches frequently accessed data.


The operating system kernel.


Oracle ZFS Storage Appliance management software.


Unused space.