The issue is that browsers don’t release much memory back to the system when it’s needed. I wish they’d work more like the Linux kernel’s VFS caching later, but they don’t (and might not be able to. For example, I do don’t think the Linux kernel has good APIs for such a use case).
You can write limits to and then poll files in /proc/pressure/ to be notified of resource pressure. Systemd will also set an environment variable for similar files for your cgroup.
The issue is that browsers don’t release much memory back to the system when it’s needed. I wish they’d work more like the Linux kernel’s VFS caching later, but they don’t (and might not be able to. For example, I do don’t think the Linux kernel has good APIs for such a use case).
You can write limits to and then poll files in
/proc/pressure/to be notified of resource pressure. Systemd will also set an environment variable for similar files for your cgroup.