Improving start performance of apps in Fedora 18 with the preload service

Last week I have red somewhere, to improve startup performance of
often used applications by installing preload and starting the service.

The last few days I've seen that the service is starting apps a lot faster.

yum install preload 

systemctl start preload

systemctl status preload
preload.service - LSB: Adaptive readahead daemon
      Loaded: loaded (/etc/rc.d/init.d/preload)
      Active: active (running) since Fri 2013-02-08 22:15:57 CET; 22min ago
     Process: 1280 ExecStart=/etc/rc.d/init.d/preload start (code=exited, status=0/SUCCESS)
      CGroup: name=systemd:/system/preload.service
          └─1296 /usr/sbin/preload --verbose 1

Feb 08 22:15:57 lxewer preload[1280]: Starting preload daemon: [  OK  ]
Feb 08 22:15:57 lxewer systemd[1]: Started LSB: Adaptive readahead daemon.