How to make google-chrome or chromium use less memory

I am using cgroup this way:

sudo cgcreate -a $USER:$USER -t $USER:$USER -g memory:groupChromiumMemLimit
sudo cgset -r memory.limit_in_bytes=$((1024*1024*1024)) groupChromiumMemLimit
cgexec -g memory:groupChromiumMemLimit chromium-browser

The chromium itself may get somewhat slowed sometimes, as it seems to be swapping, but it will not make the whole system hang on swapping other applications, so just chromium/chrome will swap as soon it "reaches 1GB limit".

But... if you look at htop, you will see many chromium processes that sum the resident memory a bit beyond 1GB, I think I need more info on this.

havent tried yet memory.soft_limit_in_bytes to see if it helps in some way, as is suggested in the link provided by https://superuser.com/a/1168435/157532.

but overall, chromium is using much less RAM than it used to, and it is clearly being swapped a lot, so these cgroup commands are working despite of what I can see at htop, so cgroup seems to try to keep chromium using "not much more than 1GB" what is good enough.

There is a plugin you could use to write memory of unused open tabs to swap. It releases that ammount of memory, so CHrome/chromium shows less memory consumption.

Search for Tab-suspender on the webstore of plugins.

https://chrome.google.com/webstore/detail/tab-suspender/fiabciakcmgepblmdkmemdbbkilneeeh