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HugePages does not match value in sysctl.conf. This may prevent system boot. (found: xx, sysctl.conf: xx) - DomU / Baremetal (Doc ID 2749597.1)

Last updated on MARCH 16, 2021

Applies to:

Oracle Exadata Storage Server Software - Version 11.1.3.1.0 to 20.1.7.0.0 [Release 11.1 to 20.0]
Linux x86-64

Symptoms

While performing pre-check on DomU server before patching, pre--check script encountered an error.

[INFO] Performing HugePage Checks
[FAIL] *** <hostname>: HugePages does not match value in sysctl.conf. This may prevent system boot. (found: 71863, sysctl.conf: 76800)
[PASS] <hostname>: HugePages < 80% of physical memory
[PASS] <hostname>: HugePages matches value in sysctl.conf
[PASS] <hostname>: HugePages < 80% of physical memory
Corrective Action: Inform Customer to tune the Hugepages configuration/
Huge pages should not occupy more than 80% of the physical memory.If it occupies , System crash will happen during reboot.
Command :: cat /proc/meminfo |grep -i memtotal=> To verify the total physical memory
Command ::cat /proc/meminfo |grep -i huge => To verify No.of Large pages and the size of Each large Page

Changes

Change value of HugePage

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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