topic Re: Wait on PIPE in Operating System - HP-UX

Wait on PIPE

Srini Jay — Sat, 27 Aug 2005 23:33:06 GMT

Hi All,We have around 1500 COBOL programs as part of our application running on HP UX 11.11. What I'm seeing is that some of these batch programs are taking a long time (2-4 hours!) to complete. Basically these programs read from Oracle DB and do some minimal processing, write to flat files, etc.
I found that most of time the job was in sleep state and glance reports that that job was waiting on PIPE. The system is also not much overloaded (average CPU usage is 12%, memory usage: 55% and not much disk activities)

I do not have much experience on IPC. Is there any kernel parameter to be tuned to avoid this wait on PIPE thing??? Any advice will help me a lot! Thanks

Re: Wait on PIPE

Alex Lavrov. — Sun, 28 Aug 2005 00:14:46 GMT

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=734444

Your problem exactly, but he never got an answer. You can try and reply to this thread and I hope this guy will get an email notification and maybe will answer you with the solution, if he found one ...

That's all I can help, sorry.

Alex.

Re: Wait on PIPE

Srini Jay — Tue, 30 Aug 2005 18:46:40 GMT

Thanks Alex! I will contact him and see if there is any solution.