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launchctl limit maxfiles

launchctl limit maxfiles 

On BSD based systems, sysctl variable is called kern.maxfiles:

On BSD based systems, the sysctl variable is called kern.maxfiles:

OS X

To check the limit on OS X run:

launchctl limit maxfiles

and look at the last two columns (soft and hard limits respectively). To change the limits create a property list at: /Library/LaunchDaemons/limit.maxfiles.plist and add the following:

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>limit.maxfiles</string> <key>ProgramArguments</key> <array> <string>launchctl</string> <string>limit</string> <string>maxfiles</string> <string>65536</string> <string>65536</string> </array> <key>RunAtLoad</key> <true/> <key>ServiceIPC</key> <false/> </dict> </plist> 

Modifying the properties as necessary. Then create /Library/LaunchDaemons/limit.maxproc.plist with the following:

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple/DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>limit.maxproc</string> <key>ProgramArguments</key> <array> <string>launchctl</string> <string>limit</string> <string>maxproc</string> <string>2048</string> <string>2048</string> </array> <key>RunAtLoad</key> <true /> <key>ServiceIPC</key> <false /> </dict> </plist> 

then chown both files to root:wheel and chmod them to 644 (-rw-r--r--). Now restart or run launchctl limit to apply.

For older versions of OS X, this tutorial may help.

Solaris

In solaris, add a line like the following:

set rlim_fd_max=65536 

to /etc/system (see this blog post for more info)

Linux

You're most likely hitting the cap for the number of open file descriptors on your operating system.

To see the number of descriptors currently in use (on a Linux based machine with the /proc filesystem), you can look at the /proc/sys/fs/file-max virtual device:

$ cat /proc/sys/fs/file-max 792823 

or run:

sysctl fs.file-max 

and to check the actual limit (-H is the hard limit, -S is the soft limit) run:

$ ulimit -Hn 4096 $ ulimit -Sn 1024 

as the user for which you want to check the limit. To change this on Linux, edit the /etc/sysctl.conf file:

fs.file-max = 100000 

You'll need to log out and back in, or run sysctl -p for the changes to take effect.

To change the FD limit for a specific user, look in the /etc/security/limits.conf file and add lines like the following:

username soft nofile 4096 username hard nofile 10240 

BSD

On BSD based systems, the FD limit can be changed by modifying the kern.maxfiles sysctl variable.

sysctl kern.maxfiles 

You're most likely hitting the cap for the number of open file descriptors on your operating system.

Linux

To see the number of descriptors currently in use (on a machine with the /proc filesystem), you can look at the /proc/sys/fs/file-max virtual device:

$ cat /proc/sys/fs/file-max 792823 

or run:

sysctl fs.file-max 

and to check the actual limit (-H is the hard limit, -S is the soft limit) run:

$ ulimit -Hn 4096 $ ulimit -Sn 1024 

as the user for which you want to check the limit. To change this on Linux, edit the /etc/sysctl.conf file:

fs.file-max = 100000 

You'll need to log out and back in, or run sysctl -p for the changes to take effect.

To change the FD limit for a specific user, look in the /etc/security/limits.conf file and add lines like the following:

username soft nofile 4096 username hard nofile 10240 

BSD

On BSD based systems, sysctl variable is called kern.maxfiles:

sysctl kern.maxfiles