FC3T1 - Prelink - System Hang every night c 04:30

[richard mullens]

Charles Curley wrote:

>On Sun, Jul 25, 2004 at 02:25:48PM +0100, richard mullens wrote:
>
>>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.
>>
>
>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 Installed: 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 10:16:00 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.
>
>
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.
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