RAMDISK Linux

Software RAM disks use the normal RAM in main memory as if it were a partition on a hard drive rather than actually accessing the data bus normally used for secondary storage such as hard disk. How do I create and store a web cache on a RAM disk to improve the speed of loading pages under Linux operating systems?

# mkdir /tmp/ramdisk;

# chmod 777 /tmp/ramdisk

# mount -t tmpfs -o size=256M tmpfs /tmp/ramdisk/

where 256M is amount of RAM you wish to allocate for ramdisk. It’s clear that this value should be less than amount of free memory (use “free -m“).

By default 16 ramdisks are already created in RHEL/CentOS/Fedora