A RAM disk or RAM drive is a block of RAM (primary storage or volatile memory) that a computer's software is treating as if the memory were a disk drive(secondary storage)
But we have more RAM[4GB]
Use tmpfs
$shell > sudo mkdir /media/ramdisk
$shell > sudo mount -t tmpfs tmpfs /media/ramdisk
Mount on Start Up Edit file /etc/fstab add to last line
tmpfs /media/ramdisk tmpfs defaults,mode=1 777 0 0
And reboot system
## Squashfs!! Compressed real-only file system for Linux. SquashFS compresses files , inodes and directories , and supports block sizes up to 1 MB for greater compression. SquashFS is also free software(licensed under the GPL) for accessing SquashFS filesystems.SquashFS is intented for general real-only file system use and in comstrained block device/memory system ( e.g. embedded systems) where low overhead is needed. The standrand version of SquashFS uses gzip compression , although there is also a project that brings LZMA compression to SquashFS.
Install squashfs tools
sudo apt-get install squashfs-tools
Create .sqsh file
mksquashfs /usr/lib/jvm/java-6-sun-1.6.0.21 /home/binkery/jdk6.sqsh
Unsquash
unsquashfs [option] target [file/directories to extract]
Use tmpfs
$shell > sudo mkdir /media/ramdisk
$shell > sudo mount -t tmpfs tmpfs /media/ramdisk
Mount on Start Up Edit file /etc/fstab add to last line
tmpfs /media/ramdisk tmpfs defaul,mode=1 777 0 0
Install squasfsh tools
sudo apt-get install squashfs-tools
create .sqsh file
mksquashfs /usr/lib/jvm/java-6-sun-1.6.0.21 /home/binkery/jdk6.sqsh
$shell > sudo mount /home/binkery/jdk6.sqsh /media/ramdisk -t squashfs -o loop
Make it permanant on startup Edit /etc/fstab add line
/home/binkery/jdk6.sqsh /media/ramdisk squashfs ro,defaults,loop 0 0
sudo update-alternatives --install "/usr/bin/java/" "/media/ramdisk/bin/java" 1
check install java complete
sudo update-alternatives --config java
And choose java in ram.
Finish.
- EOF -
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本文标题： Ubuntu & Debian RAM Disk
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