Some background: Today I have realized that my system SSD is almost full (90% full) for the /home dir. I have realized that the main culprit is (are) the 77 chromium profiles that I use on my computer. I manage 16 google accounts and have created several profiles for some of the accounts as sub-departments (yes, I need the 77 chrome profiles, I want them, please do not tell to delete some, as I know that)

I am a Xubuntu user, and this question is related to Ubuntu / Xubuntu. I have been searching the web for solutions. The most valuable site regarding Chromium options has been this Arch Linux site for Chromium https://wiki.archlinux.org/index.php/Chromium/Tips_and_tricks

I currently launch my Chromium profiles like this:

chromium-browser --user-data-dir=/home/ThisComputerUsername/.config/chromium/GoogleUserProfileXSubjectY

1) One option I would have is to limit the amount of cache for each profile. So I would append --disk-cache-size=50000000 to my chromium launch command from before. Adding that to my launch command would result in a cache size of only 50MB, and the total command would look like :

chromium-browser --user-data-dir=/home/ThisComputerUsername/.config/chromium/GoogleUserProfileXSubjectY --disk-cache-size=50000000

Would this command be correct?

2) Another option would be to send the cache to /tmp to have it deleted each time the computer is restarted. I am ok with that, more internet usage but less SSD wear. Appending something like --disk-cache-dir=/tmp/cache to the launch command I would (I think) achieve that. The total command would look like this, also reducing the cache to 50MB as in option 1.

chromium-browser --user-data-dir=/home/ThisComputerUsername/.config/chromium/GoogleUserProfileXSubjectY --disk-cache-size=50000000 --disk-cache-dir=/tmp/cache/GoogleUserProfileXSubjectY

Would this command be correct?

3) And the final option, as I always move from place to place where I have very good internet connection, would be to place the cache in a /tmpfs, that as I understand, (just from today) is something like /tmp on ram, that also would be deleted when I restart the computer but with the plus of avoiding SSD wear as the cache is never stored (I don't mind having to load all the content of every web page I visit, I prefer to save SSD life)

So how would that be achieved?. I guess it will not be as easy as doing something like this, --disk-cache-dir=/tmpfs/cache/GoogleUserProfileXSubjectY right? Please note the fs on tmp

Would that be correct? If not, how I could do that? I am a regular Linux user, but not a systems wizard. Please some help.

  • If the cache for a profile is a regular file, I would try to 1) copy the file to /tmp, and 2) ln -sv /tmp/cache-file-name ~/.config/chromium/original-location/cache-file-name, 3) See if Chromium notices the difference or not. Then, delete the cache file from tmp, and make sure that Chromium recreates it, and does not overwrite the symlink. – jpaugh Sep 30 '19 at 22:00

Multiple caches exist per this web article:

data in /home/$USER/.cache/google-chrome/Default/Cache
media files in /home/$USER/.cache/google-chrome/Default/Media Cache
Java/HTML5 app data in /home/$USER/.config/google-chrome/Default/Application Cache/Cache

How can you redefine those to land in that /tmpfs? (An excellent idea, BTW.) As per another Chromium document, variables are used which comply with the XDG Base Directory specs, and the magic word is $XDG_CACHE_HOME . You have to redefine where that lives, by making a text file ~/.pam_environment which follows Ubuntu rules for changing variables, and contains your preferred location for cache files, a la:


which will redefine both the cache and the media cache. AppData's location is overridden with the $CHROME_USER_DATA_DIR environment variable, so make sure ~/.pam_environment also includes


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