RAM Disk, SSD tuning

ram.sh

#!/bin/bash

# Optimize performance by using RAM disk
# Espcially improve life for SSD

# Disable access time
mount -vuwo noatime /

# Create RAM disk
ramfs_size_mb=256
mount_point=/ram

ramfs_size_sectors=$((${ramfs_size_mb}*1024*1024/512))
ramdisk_dev=`hdid -nomount ram://${ramfs_size_sectors}`
newfs_hfs -v 'Ram' ${ramdisk_dev}
mount -o rw,noatime -t hfs ${ramdisk_dev} ${mount_point}
mkdir /ram/{log,tmp,user_cache}
# Create a skeleton
# Move all logs files here
chmod 777 /ram/{log,tmp}
chown your_name:staff /ram/user_cache
chmod 770
# Move user files cache there
rm -R /Users/your_name/Library/Caches
ln -s /ram/user_cache /Users/your_name/Library/Caches