[Info-vax] VSI I64VMS CSWS V2.4-48B subprocesses go bererk?

[abrsvc]

On Tuesday, December 28, 2021 at 8:01:15 AM UTC-5, Volker Halle wrote:
> Steven, 
> 
> you can at least try to collect some more information to determine, whether the problem is inside Apache or OpenVMS. 
> 
> $ SHOW PROC/CONT/ID=<pid-of-looping-process> 
> 
> Any resource consumption except CPU ? 
> Collect some PC values. In process or system space ? 
> 
> $ ANALYSE/SYS 
> SDA> SET PROC/ID=<pid-of-looping-process> 
> SDA> SHOW PROC/CHAN 
> ... any Busy channels ? 
> SDA> SHOW CALL/SUMMARY 
> ... collect some stack traces. Always the same routine names on the stack ? 
> SDA> EXA/INS <pc-values-collected-above> - which routine names ? 
> 
> Volker.

Set the process priority down to zero too.  This will help.  I have used the technique mentioned by Volker many times to resolve "hanging" processes.  Setting the priority down, will allow for better capture of PCs in a tight loop as little CPU will be used if the system is relatively busy given the process priority.