e4rat (“Ext4 – Reducing Access Times”) is a toolset to accelerate the boot process as well as application startups. e4rat reduces disk access times through physical file reallocation. It is based on the online defragmentation ioctl EXT4_IOC_MOVE_EXT from the ext4 filesystem, which was introduced in Linux kernel 2.6.31.
This utility leads to a high disk transfer rate.
e4rat has proven to be very useful for workstations used by a single user using X windows.
Key Features
- e4rat-collect – gathers relevant files by monitoring file accesses during an application startup.
- e4rat-realloc – files are placed physically in a row on disk. The reallocation of the files’ content yields a higher disk transfer rate which accelerates program start processes.
- e4rat-preload – transfers files into memory in parallel to program startup.
Website: e4rat.sourceforge.net
Support: Documentation
Developer: Andreas Rid, Gundolf Kiefe
License: GNU General Public License v3.0
e4rat is written in C++. Learn C++ with our recommended free books and free tutorials.
Related Software
| Boot Utilities | |
|---|---|
| Ventoy | Create bootable USB drive for ISO/WIM/IMG/VHD(x)/EFI files |
| Limine | Multiprotocol bootloader and boot manager |
| rEFInd | EFI boot manager |
| Plymouth | Boot splash and boot logger |
| UNetbootin | Universal Netbook installer |
| sbctl | Create, enroll and manage Secure Boot keys |
| Grub Customizer | Graphical interface to configure the grub2/burg settings |
| bootchart2 | Merge of bootchart-collector and pybootchartgui |
| OProfile | Low-overhead, transparent system-wide profiler |
| e4rat | Ext4 - Reducing Access Times; toolset to accelerate the boot process |
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