>Hi list, >Once again my FC4 box (Duron 1200mHz, 512 ram) has crawled to a halt. >I quickly top'ed and found a process prelink that varied between >74%-98% CPU usage. > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 5202 root 39 19 11724 9280 536 R 89.9 1.9 0:23.59 prelink > >So I googled for prelink and now know that it helps preload libraries >so that progreams can start faster. Which is senseable because the >machine started slowing down when I clicked 'manage bookmarks' in >firefox, which opens another program. My question is, what can I do to >prevent this from happening again? Do I have to ust cross my fingers >every time I open a new program? > If you look in /etc/crontab, you will probably see something like: SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO=root HOME=/ # run-parts 01 * * * * root run-parts /etc/cron.hourly 02 4 * * * root run-parts /etc/cron.daily 22 4 * * 0 root run-parts /etc/cron.weekly 42 4 1 * * root run-parts /etc/cron.monthly This tells cron to run stuff at regular intervals. If you look in /etc/cron.daily/ you will see things like 00-logwatch 00-makewhatis.cron 0anacron logrotate prelink rpm slocate.cron tetex.cron tmpwatch yum.cron Looking at the prelink script, it goes round your system seeing if there is any new stuff to prelink. Likewise 00-makewhatis.cron re-builds the 'whatis' database These are both disk-intensive (hence cache-consuming) things which you may not want to do so frequently... Cheers, Terry.
