Re: abnormal freezes

[Patrick Kirsch <pkirsch@xxxxxxxxxxxxxxx>]

Hey,
attila.mathe@xxxxxxxxxxxxxxxxxx wrote:

I’m having a linux box running with Centos 5.3 x86 (kernel 2.6.18-128.7.1.el5xen)  which is freezing time to time and can’t login neither trough console.

The only thing what I can do, to pass the situation is to power off/on the pc.

 

The pc is used only as a torrent server running with transmission 1.74.

There are days when 400GB data traffic goes through the pc, and there are days when after 50Mb freezes.

 

What I checked:

-          Network card doesn’t show any error (netstat –in)

-          /var/log/messages (nothing serious is mentioned)

-          Router logs (nothing)

-          temperature (sensors show normal parameters, which are true measured manually also)

 

 

Do you have any idea how to troubleshoot the situation, what I’m missing  ?

A way to get more information about the situation is to increase the kernel log level and attach a serial console to the host.
/usr/src/linux/Documentation/serial-console.txt helps.
Next when you get the state you can request the system "/usr/src/linux/Documentation/sysrq.txt", I mean you can print out the active processes and the kernel log buffer.
Afterwards send the logs right back to the list, maybe we can then help further.

I’m thinking that there may be some hardware issues, but the thing was running fine for 1 month, and didn’t do much beside yum update on it.

If you think of a hardware issue, you should run memcheck. Afterwards you should stress the remaining lower bandwidth subsystems of the host.

 

 

Thanks,

Cheers,

A

Regards,
 Patrick

-- 
Software Developer

Email: Patrick.Kirsch@xxxxxxxxxxxxxxx
Web: http://www.billigflieger.de | http://www.bookandsmile.de

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