<html> <head> </head> <body> Charles Curley wrote: <blockquote type="cite" cite="mid:20040730160241.GA32595@charlescurley.com"> <pre wrap="">On Sun, Jul 25, 2004 at 02:25:48PM +0100, richard mullens wrote: </pre> <blockquote type="cite"> <pre wrap="">My system (Duron 850) hangs every night at about 04:30. System doesn't respond to mouse movement, keystroke, Control alt anything or PING. The time in the botton right hand of X display is the same as (or 1 minute later than) the timestamp of /var/log/prelink. (Frozen) top shows "makewhatis" and prelink running recently. Last message in /var/log/prelink always (so far):- "warning /usr/lib/lib???.so??? has undefined non-weak symbols. This problem doesn't affect an other machine I have running FC3T1, and perhaps, tonight, now that I have shut the case and added an extra fan, it will go away. However,I'd be interested to know the purpose of this nightly activity - and the consequences were I to inhibit it. </pre> </blockquote> <pre wrap=""> Oddly enough, I'm seeing much the same thing om my firewall, a headerless 333MHz PII. However: * I am running FC2. * I do not have prelink installed. * I do have tripwire, which has a daily cron job which is similarly disk intensive. I just did a manual run of tripwire, and at the same time I ran "iptables -L" from another login. The system locked up, same symptoms. I'm not sure when I started seeing this lockup. However, the tripwire job usually mails its results to my desktop. The first of those to not show up is on 15 July. The machine has crashed almost every morning since 23 July. Here is my yum.log from the last two updates prior to 15 July: 06/12/04 11:26:02 Installed: kernel 2.6.6-1.427.i686 06/12/04 11:26:02 Updated: net-tools 1.60-25.1.i386 06/12/04 11:26:02 Updated: xinitrc 3.41-1.noarch 06/12/04 11:26:02 Updated: krb5-libs 1.3.3-7.i386 07/10/04 10:16:00 Instal led: kernel 2.6.6-1.435.2.3.i686 07/10/04 10:16:00 Updated: xorg-x11-xauth 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-Mesa-libGLU 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-xfs 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-libs 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-twm 6.7.0-5.i386 07/10/04 10:16:00 Updated: dhclient 2:3.0.1rc14-1.i386 07/10/04 10:16:00 Updated: xorg-x11-libs-data 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-tools 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11 6.7.0-5.i386 07/10/04 10:16:00 Updated: GConf2 2.6.0-7.i386 07/10/04 10:16:00 Updated: xorg-x11-base-fonts 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-font-utils 6.7.0-5.i386 07/10/04 10:16:00 Updated: libpng 2:1.2.5-5.i386 07/10/04 10:16:00 Updated: xorg-x11-100dpi-fonts 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-Mesa-libGL 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-75dpi-fonts 6.7.0-5.i386 07/10/04 10:1 6:00 Updated: xinitrc 3.42-1.noarch 07/10/04 10:16:00 Updated: xorg-x11-truetype-fonts 6.7.0-5.i386 07/10/04 10:16:00 Updated: xorg-x11-xdm 6.7.0-5.i386 07/25/04 09:23:20 Updated: fam 2.6.10-9.FC2.i386 07/25/04 09:23:20 Updated: initscripts 7.55.1-1.i386 07/25/04 09:23:20 Updated: info 4.7-4.i386 One of the updates is a new kernel. I'm going to try running the prior kernel for several days and see what I get. </pre> </blockquote> The problem started when I moved from FC1 to FC3T1. Since blowing away the dust, adding a case fan and closing the case, it hasn't recurred. The first night after doing this maintenance, the system ran with 95% CPU utilisation for about 0.75 hours from 04:02 I was only half awake but I think that the main activity was "makewhatis". Now that makewhatis has run once, successfully, the nightly activity finishes much quicker. Now I leave the system monitor and top running - just in case I get another problem. I turned off the screen saver. </body> </html>