PowerFlex: SVM vm.overcommit Best Practices

Résumé: This article provides instructions on how to check the vm.overcommit_memory and vm.overcommit_ratio settings and how to modify the settings to match best practices.

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Instructions

To check and/or modify the SVM vm.overcommit settings, follow these steps:

1. Log in to the SVM using SSH as root

2. Run cat /etc/sysctl.conf | grep "vm.overcommit"
Ex.
[root@sds-node logs]# cat /etc/sysctl.conf | grep "vm.overcommit"
vm.overcommit_memory = 2
vm.overcommit_ratio = 50

3, Run the following commands
sed -i 's/vm\.overcommit_memory = .*/vm\.overcommit_memory = 2/g' /etc/sysctl.conf
sed -i 's/vm\.overcommit_ratio = .*/vm\.overcommit_ratio = 100/g' /etc/sysctl.conf
sysctl -p

Validation
[root@sds-node logs]# cat /etc/sysctl.conf | grep "vm.overcommit"
vm.overcommit_memory = 2
vm.overcommit_ratio = 100

Repeat these steps on all SVMs in the environment to ensure that they are set to the recommended best practice settings. You do not need to place the SDS into maintenance mode to perform this operation. 
 
 

Produits concernés

PowerFlex rack
Propriétés de l’article
Numéro d’article: 000198177
Type d’article: How To
Dernière modification: 13 May 2026
Version:  8
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