[CentOS] Hangs after inactivity

[Dennis Jacobfeuerborn]

On 31.12.2013 03:00, Arvind Nagarajan wrote:
> Hi,
>
> My linux machine hangs after some period of inactivity (8+ hrs).
> Anyone experiencing similar issue.
>
> CentOS
> Release 6.5(Final)
> Kernel Linux 2.6.32-431.el6_x86_64
> GNOME 2.28.2
>
> Processor (0 - 7):
> Intel(R) Core(TM) i7-4770 CPU @ 3.40 GHz
>
> Any pointers will be helpful.

You can try running the machine with the kernel option "pcie_aspm=off" 
and see if that helps and also try to disable C-States or Power Saving 
all together in the BIOS.
More Details here:

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Power_Management_Guide/ASPM.html

http://lists.us.dell.com/pipermail/linux-poweredge/2011-June/044901.html

I've experienced lock-ups in the past because of these issues. The 
network device hung because it tried to go into power saving mode using 
ASPM and it failed and whole servers locked-up after being idle for a 
while because of a bug in Intel Processors regarding the deeper power 
saving modes (C-States) although these are supposed to be fixed since 
6.3. Hope this helps.

Regards,
   Dennis