Andrey (azangru) wrote,
Andrey
azangru

Note to future self:

To increase the maximum limit of open files on Ubuntu:

1) When logging in via GUI:
Modify the following (commented out) line in /etc/systemd/user.conf and /etc/systemd/system.conf:
#DefaultLimitNOFILE=

(and add the desired upper limit)

2) When logging in via command line:
Add the following lines to /etc/security/limits.conf:
/user/ hard nofile /desired max number of open files/
/user/ soft nofile /desired max number of open files/

e.g.: andrey hard nofile 65535

3) Probably add to .bashrc and .bash_profile the line to change the upper limit for the number of open files:
ulimit -n /desired max number of open files/

Source

Writing this out here, because the readily googlable solution (summarized in step 2 above) did not work on my laptop, and it wasn’t immediately apparent that it’s only suitable for command-line logins.

Dunno if step 3 is still necessary when using step 1.

P.S.: WTF? LJ just went ahead and added a tag to my post. Because I put a hash before DefaultLimitNOFILE. Ugh!
Tags: #defaultlimitnofile
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