virtualbox on archlinux when buff/cache is almost full of memory and free is very little, at this point it is not possible to start any VMs

[catmatrix]

virtualbox on archlinux when buff/cache is almost full of memory and free is very little, at this point it is not possible to start any VM. This phenomenon can be reproduced stably, at this point my free -h looks like this

                         total        used        free      shared  buff/cache   available
Mem：          62Gi        32Gi       3.8Gi       677Mi        28Gi        30Gi
Swap：         127Gi       6.4Gi       121Gi

I configured the virtual machine I'm about to start with 8G of RAM

The error message for attempting to start is as follows

Out of memory condition when allocating memory with low physical backing. (VERR_NO_LOW_MEMORY). 返回 代码: NS_ERROR_FAILURE (0x80004005) 组件: ConsoleWrap 界面: IConsole {6ac83d89-6ee7-4e33-8ae6-b257b2e81be8}

[catmatrix]

Virtual Machine Configuration Files That Did Not Successfully Start