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Lower Zone Protection on OL4/5 (Doc ID 842886.1)

Last updated on APRIL 21, 2020

Applies to:

Linux OS - Version Oracle Linux 4.4 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64
Linux x86
Linux Kernel - Version: 2.6


This note introduces the lower zone protection in the virtual memory management system on Oracle Linux 4/5. This note could be used as a reference for system administrator to configure the lower zone protection feature when dealing with LowMem issues.


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In this Document
 How to configure vm.lower_zone_protecion
 lower_zone_protection for Hugemem kernel
 lower_zone_protecton on x86_64
 lower_zone_protection on RHEL5/OL5

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