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# see the current limits | |
$ sysctl -a | grep maxproc | |
# increase it | |
$ sudo sysctl -w kern.maxproc=xxxx | |
$ sudo sysctl -w kern.maxprocperuid=xxx | |
# run at startup | |
$ sudo vim /etc/sysctl.conf | |
kern.maxproc=xxxx | |
kern.maxprocperuid=xxxx | |
$ sudo launchctl limit | |
$ sudo launchctl limit maxproc <maxprocperuid> <maxproc> | |
$ sudo launchctl limit maxfiles 512 unlimited | |
# run at startup | |
$ sudo vim /etc/launchd.conf | |
limit maxproc <maxprocperuid> <maxproc> | |
limit maxfiles 512 unlimited |
The changes to /etc/launchd.conf don't appear to work in Yosemite.
After setting the following in launchd.conf
limit maxproc 1418 2128
limit maxfiles 512 unlimited
and rebooting launchctl limit
still says:
$ launchctl limit
maxproc 709 1064
maxfiles 256 unlimited
It appears other users have also encountered this issue: http://superuser.com/questions/836883/increasing-yosemite-maxfile-limit-for-application
(Sharing here as this currently rises to the top on google search results for "yosemite forkpty")
think
Thank you for this! What are the maximum values that can be set for maxproc
and maxprocperuid
?
I'm getting this issue right now on 10.12.6 and im on one of the newer and faster mac pros. It seems a little unbelieveable that im hitting this limit. I have firefox with 20 or more tabs and then say 10 other applications open but on my old mac I never hit this limit. I'm following the guide listed here, but could there ever be any issues to the mac if you double your process count i.e could it burn out the process or drain battery massively?
A limit of 1064 processes on a 16 GB 8-core i7 Macbook is extremely low - I couldn't believe it when I first hit this "Cannot fork" issue.
from man 8 sysctl
:
The -w option has been deprecated and is silently ignored.
I also needed sudo sysctl kern.tty.ptmx_max=255
(or 511, or whatever). My default (in El Capitan) was 127. (As a tmux
user, I need more than that.)
Thanks for this!