How Photon OS in Aria Operations 8.x onwards utilizes swap space.
Article ID: 340114
Updated On:
Products
VCF Operations/Automation (formerly VMware Aria Suite)
Issue/Introduction
Linux Kernel version, and settings are different between SLES (vRealize Operations Manager 7.5 and below) and Photon OS (Aria/vRealize Operations 8.x and above). The memory/swap management mechanism is handled differently.
Environment
VMware Aria Operations 8.x (Formerly vRealize Operations)
Cause
In Aria/vRealize Operations 8.x running on Photon OS (based on Linux kernel 4.19.97 and later), you might see swap space utilization, even if memory is available.
Resolution
The Linux kernel moves rarely used memory pages into swap space to ensure that more cacheable space is made available in-memory for frequently used memory pages. This improves overall system performance.
Continue to monitor and ensure you stay within the Aria/vRealize Operations sizing guideline limits.
Additional Information
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