Cache: ARC Adaptive Parameter

This is arc_p from the ZFS ARC. This shows how the ARC is adapting its MRU and MFU list size depending on the workload.

An understanding of ZFS ARC internals might be required to properly interpret this statistic.

When to Check ARC Adaptive Parameter

Rarely; this could be useful for identifying internal behavior of the ARC; however, there are other statistics to check before this one.

If there are caching issues on Oracle ZFS Storage Appliance, check the Cache: ARC Accesses statistic to see how well the ARC is performing, and the Protocol statistics to understand the requested workload. Then, check the Advanced Analytics Cache: ARC Size and Cache: ARC Evicted Bytes for further details on the ARC behavior.

ARC Adaptive Parameter Breakdowns