[Xymon] Could not fork checkpoint child:Cannot allocate memory

[J.C. Cleaver]

On Mon, July 21, 2014 3:24 am, Raul GN wrote:
> After upgrading from xymon version 4.3.12 to 4.3.17  xymond daemon memory
> grow without any limit. After a 2 or 3 days this messages appear in logs:
>
> 2014-07-17 16:27:46 Setup complete
> 2014-07-18 04:16:49 Flapping detected for web.int:http - 10 changes in 868
> seconds
> 2014-07-18 04:16:49 Flapping detected for web.int:tomcat - 10 changes in
> 868 seconds
> 2014-07-18 04:18:23 Flapping detected for web.int:http - 10 changes in 892
> seconds
> 2014-07-18 04:18:23 Flapping detected for web.int:tomcat - 10 changes in
> 892 seconds
> 2014-07-18 18:25:44 Flapping detected for web.int:http - 10 changes in 808
> seconds
> 2014-07-18 18:25:44 Flapping detected for web.int:tomcat - 10 changes in
> 808 seconds
> 2014-07-18 23:40:53 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-18 23:50:54 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 00:00:55 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 00:10:56 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 00:20:57 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 00:30:58 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 00:40:59 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 00:51:00 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 01:01:01 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 01:11:02 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 01:21:03 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 01:31:04 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 01:41:05 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 01:51:06 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 02:01:07 Could not fork checkpoint child:Cannot allocate memory
> 2014-07-19 02:11:08 Could not fork checkpoint child:Cannot allocate memory
>
> ¿Anybody knows how to avoid this problem? If I don't reboot xymon it
> crash.
> _______________________________________________


Hmm. If it's growing truly without limit there's something unusual going
on; I'd take the memory allocation error later on at face value.

Can you provide any additional details? Do you have an unusual workload or
ulimits on the xymon user? Or a large number of host inserts/removals?
What OS are you running?


Regards,

-jc