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Memory Management Between ZFS and Applications in Oracle Solaris 11.x (Doc ID 1663862.1)

Last updated on MARCH 22, 2021

Applies to:

Solaris Operating System - Version 11.1 and later
Information in this document applies to any platform.

Purpose

This document contains information regarding a new tunable parameter user_reserve_hint_pct in Solaris 11.2 and Solaris 11.1 SRU 20.5 or newer that provides a hint for how much memory to reserve for application use, thereby limiting how much memory can be used by the ZFS ARC cache.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 Considerations for user_reserve_hint_pct Parameter
 zfs_arc_max Vs user_reserve_hint_pct
 user_reserve_hint_pct
 How to calculate a suitable value
 Setting the user_reserve_hint_pct Parameter
References

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