The last two columns are the soft and hard limits, respectively. To check the current limits on your Mac OS X system, run: launchctl limit maxfiles Load these new settings: sudo launchctl load -w /Library/LaunchDaemons/įinally, check that the limits are correct: launchctl limit maxfiles It seems like there is an entirely different method for changing the open files limit for each version of OS X!Ĭreate a file at /Library/LaunchDaemons/ and paste the following in (feel free to change the two numbers (which are the soft and hard limits, respectively): Ĭhange the owner of your new file: sudo chown root:wheel /Library/LaunchDaemons/
zshrc or whatever) if you want it to run every time you open a shell. You can add it to your shell configuration file (. That change is also temporary it only lasts for the current shell session. The command for that is: ulimit -S -n 2048 # or whatever number you choose Up this many files are going to be initiated by the shell you’re Once you’ve done this, the kernel itself will have a maximum number ofįiles but the shell might not. Note: In OS X 10.10 or lower, you can add setting in /etc/nf like limit maxfiles and it will override whatever you put here. To make the change permanent, use sudo to put your settings in /etc/nf (which you may have to create), like this: kern.maxfiles=20480 sysctl -w kern.maxfilesperproc=18000 (or whatever number you choose).sysctl -w kern.maxfiles=20480 (or whatever number you choose).You can increase the limits (at your own risk) with:
To 12,288 and the maximum number of files a given process can open is According to this helpful article (which I recommend reading):īy default, the maximum number of files that Mac OS X can open is set
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