Re: [HTCondor-users] condor_starter... kernel: NMI watchdog: BUG: soft lockup - CPU stuck for...

[Antonio Dorta <adorta@xxxxxx>]

Hi!

Thanks for replying!

I wouldn't say it happens so rarely in our case. I've checked in our  
logs of about 1 year in a ~200-machine pool and there were 9038 lines  
like: "Starter pid XXXXX died on signal 11 (signal 11 (Segmentation  
fault))".

Thanks once again for your help.

Best regards,




Quoting Jaime Frey <jfrey@xxxxxxxxxxx>:

> On Oct 18, 2016, at 3:51 AM, Antonio Dorta  
> <adorta@xxxxxx<mailto:adorta@xxxxxx>> wrote:
>
> Yeah, you're right, there is pretty much information in StarterLog.slotX...
>
> It seems it was trying to communicate to another machine and then it died...
>
> This looks like some sloppy cleanup code when the starter exits in  
> certain error conditions. It lost its network connection the shadow  
> daemon on the submit machine during file transfer. It was then told  
> to exit, which precipitated jumbled cleanup code that included  
> trying to tell the shadow it was exiting (over a dead connection). I  
> havenât trace the exact cause of the crash, but the code involved  
> has several problems that need to be fixed.
>
> The startd should recover from the crash without any assistance. If  
> these crashes are only happening rarely, then I wouldnât worry about  
> them. We will work on a fix, though.
>
> Thanks and regards,
> Jaime Frey
> UW-Madison HTCondor Project


--
Antonio Dorta
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