Firefox does a lot of IO to the disk even thou you have lots of spare Ram, due to Sqlite, Bookmarks, History and Cache.
To make Firefox faster is to store the whole profile folder into a Ram Disk.
RamDisk in Linux are called TmpFS. You can also use shared memory folder /dev/shm if you have it in your fstab.
This post in the gentoo forums explains how to do it in Gentoo linux.
I made a similar script to make it work in OSX Leopard.
The Script have 2 parts, Start.sh and Stop.sh
Here are the Scripts:
#!/bin/bash # Run this script to enable the Ramdisk for Firefox profiles VolumeName="Mozilla" # Size in MB, make sure is not too low or not too high SizeInMB=220 NumSectors=$((2*1024*SizeInMB)) DeviceName=`hdid -nomount ram://$NumSectors` echo $DeviceName diskutil eraseVolume HFS+ RAMDisk $DeviceName # move the current profiles folder mv Profiles Profiles_ && # make a symlink to the ramdisk ln -s /Volumes/RAMDisk ./Profiles && # then copy it to the ramdisk /bin/cp -r Profiles_/* Profiles
#!/bin/bash cd ~/Library/Cache/Firefox/ # clean the cache rm -rf Profiles/*/Cache/* && # will save your modifications back to the DISK /usr/bin/rsync -av --delete ./Profiles/ ./Profiles_/ && # sometimes during unmount it will say disk is in use. # make sure you close firefox before. umount /Volumes/RAMDisk && rm -rf Profiles && mv Profiles_ Profiles
You can also use ‘tar’ instead of ‘rsync’. I just love rsync more.
* Warning: The ramdisk contents will be erased after you umount the ramdisk.
To speed up firefox even more run these commands:
cd ~/Library/Caches/Firefox/Profiles for i in */*.sqlite; do sqlite3 $i VACUUM;done; cd ~/Library/Application\ Support/Firefox/Profiles for i in */*.sqlite; do sqlite3 $i VACUUM;done;