e4rat - Toolset to accelerate the boot process as well as application startups

Distribution: PCLinuxOS
Repository: PCLinuxOS x86_64
Package name: e4rat
Package version: 0.2.3
Package release: 4pclos2016
Package architecture: x86_64
Package type: rpm
Installed size: 793.28 KB
Download size: 793.28 KB
Official Mirror: ftp.nluug.nl
e4rat ("Ext4 - Reducing Access Times") is a toolset to accelerate the boot process as well as application startups. Through physical file realloction e4rat eliminates both seek times and rotational delays. This leads to a high disk transfer rate. Placing files on disk in a sequentially ordered way allows to efficiently read-ahead files in parallel to the program startup. The combination of sequentially reading and a high cache hit rate may reduce the boot time by a factor of three, as the example below shows. e4rat is based on the online defragmentation ioctl EXT4_IOC_MOVE_EXT from the Ext4 filesystem, which was introduced in Linux Kernel 2.6.31. Other filesystem types and/or earlier versions of extended filesystems are not supported.



  • e4rat = 0.2.3-4pclos2016
  • e4rat(x86-64) = 0.2.3-4pclos2016
  • libe4rat-core.so.0()(64bit)


    Install Howto

    1. Enable PCLinuxOS x86_64 repository in /etc/apt/sources.list:
      rpm http://ftp.nluug.nl/pub/os/Linux/distr/pclinuxos/pclinuxos/apt/ pclinuxos/64bit x86_64
    2. Update the package index:
      # apt-get update
    3. Install e4rat rpm package:
      # apt-get install e4rat