-
-
Save skeeet/2367298 to your computer and use it in GitHub Desktop.
Create a RAM disk for using with XCode
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/bin/sh | |
# Create a RAM disk with same perms as mountpoint | |
# Script based on http://itux.idev.pro/2012/04/iservice-speed-up-your-xcode-%D0%BD%D0%B5%D0%BA%D0%BE%D1%82%D0%BE%D1%80%D1%8B%D0%B5-%D1%81%D0%BF%D0%BE%D1%81%D0%BE%D0%B1%D1%8B/ with some additions | |
# Usage: sudo ./xcode_ramdisk.sh start | |
USERNAME=$(logname) | |
TMP_DIR="/private/tmp" | |
RUN_DIR="/var/run" | |
SYS_CACHES_DIR="/Library/Caches" | |
USER_CACHES_DIR="/Users/$USERNAME/Library/Caches" | |
DEV_CACHES_DIR="/Users/$USERNAME/Library/Developer/Xcode/DerivedData" | |
DEV_IPHONE_DIR="/Users/$USERNAME/Library/Application Support/iPhone Simulator" | |
RAMDisk() { | |
mntpt="$1" | |
rdsize=$(($2*1024*1024/512)) | |
echo "Creating RamFS for $mntpt $rdsize" | |
# Create the RAM disk. | |
dev=`hdik -drivekey system-image=yes -nomount ram://$rdsize` | |
# Successfull creation... | |
if [ $? -eq 0 ] ; then | |
# Create HFS on the RAM volume. | |
newfs_hfs $dev | |
# Store permissions from old mount point. | |
eval `/usr/bin/stat -s "$mntpt"` | |
# Mount the RAM disk to the target mount point. | |
mount -t hfs -o union -o nobrowse -o nodev -o noatime $dev "$mntpt" | |
# Restore permissions like they were on old volume. | |
chown $st_uid:$st_gid "$mntpt" | |
chmod $st_mode "$mntpt" | |
fi | |
} | |
# Test for arguments. | |
if [ -z $1 ]; then | |
echo "Usage: $0 [start|stop|restart] " | |
exit 1 | |
fi | |
# Source the common setup functions for startup scripts | |
test -r /etc/rc.common || exit 1 | |
. /etc/rc.common | |
StartService () { | |
ConsoleMessage "Starting RamFS disks..." | |
RAMDisk "$TMP_DIR" 128 | |
RAMDisk "$RUN_DIR" 64 | |
RAMDisk "$SYS_CACHES_DIR" 64 | |
RAMDisk "$USER_CACHES_DIR" 1024 | |
RAMDisk "$DEV_CACHES_DIR" 1024 | |
RAMDisk "$DEV_IPHONE_DIR" 1024 | |
#RAMDisk /var/db 1024 | |
#mkdir -m 1777 /var/db/mds | |
} | |
StopService () { | |
ConsoleMessage "Stopping RamFS disks, nothing will be done here..." | |
# diskutil unmount /private/tmp /private/var/run | |
# diskutil unmount /private/var/run | |
} | |
RestartService () { | |
ConsoleMessage "Restarting RamFS disks, nothing will be done here..." | |
} | |
RunService "$1" |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
I have rewrote this as a new version that can unmount the disks.
https://gist.github.com/derjohng/a828e4c40a328fe5881f