This is to set the kernel settings so that you can use Postgres query logging

sysctl.plist

<?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>sysctl</string>
 <key>ProgramArguments</key>
 <array>
 <string>/usr/sbin/sysctl</string>
 <string>-w</string>
 <string>kern.sysv.shmmax=1073741824</string>
 <string>kern.sysv.shmall=1073741824</string>
 </array>
 <key>RunAtLoad</key>
 <true/>
</dict>
</plist>