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CPU is busy by terminal

 
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Yaroki
Super Advisor

CPU is busy by terminal

Hello,

 

When I close terminal with double click or Window -> close(dtterm) the top utility indicates that the %CPU is about 11%-13% and the %WCPU is about 34%.

Also this simple task takes few seconds.

 

HP-UX (C-8000, B.11.11)

 

Please advice

 

Yali

5 REPLIES
Dennis Handly
Acclaimed Contributor

Re: CPU is busy by terminal

>the top utility indicates that the %CPU is about 11%-13% and the %WCPU is about 34%.

>Also this simple task takes few seconds.

 

Does it say what process is using the CPU?  And if it finishes in a few seconds, why worry?

Yaroki
Super Advisor

Re: CPU is busy by terminal

The process that is using by the CPU is dtterm.

The worry comes from the users' complains. Actually, they are right - this simple task should end within less then a second and not used so many CPU resources.

Dennis Handly
Acclaimed Contributor

Re: CPU is busy by terminal

>this simple task should end within less then a second and not used so many CPU resources.

 

You might try attaching with tusc before you close the window and see what it's doing.

Is your wtmp file too large?

Yaroki
Super Advisor
Solution

Re: CPU is busy by terminal

> You might try attaching with tusc before you close the window and see what it's doing.

 

I don't know what you mean in this sentence but /var/adm/wtmp was too large.

 

Thank you on behalf of the users :)

Dennis Handly
Acclaimed Contributor

Re: CPU is busy by terminal

>I don't know what you mean in this sentence

 

tusc is a system call tracing tool.  It could tell you what calls you are doing and how long they take.

Or the fact it is opening wtmp and doing lots of I/O.

You can download it from:

http://hpux.connect.org.uk/hppd/hpux/Sysadmin/tusc-8.1/