prelink is a program which modifies ELF shared libraries and ELF dynamically linked binaries, so that the time which dynamic linker needs for their relocation at startup significantly decreases and also due to fewer relocations the run-time memory consumption decreases too . Such prelinking information is only used if all its dependant libraries have not changed since prelinking, otherwise programs are relocated normally. This works on Redhat, Oracle Linux, Fedora, CentOS.
It is intended to speed up a system by reducing the time a program needs to startup. This seems to help systems with a large number of libraries, such as KDE/GNOME.
How to run:
As root, run the following command.
# prelink -avmR
prelink package information :
[root@unixfoo ~]# which prelink /usr/sbin/prelink [root@unixfoo ~]# rpm -qf /usr/sbin/prelink prelink-0.3.9-2.1 [root@unixfoo ~]# rpm -qi prelink Name : prelink Relocations: (not relocatable) Version : 0.3.9 Vendor: Fedora Release : 2.1 Build Date: 21 Jun 2007 Install Date: Tue 02 Sep 2008 01:51:10 PM PDT Build Host: xxxxx Group : System Environment/Base Source RPM: prelink.src.rpm Size : 1681237 License: GPL Signature : DSA/SHA1, 21 Jun 2007 , Key ID dddffee Summary : An ELF prelinking utility Description : The prelink package contains a utility which modifies ELF shared libraries and executables, so that far less relocations need to be resolved at runtime and thus programs come up faster. [root@unixfoo ~]#