High CPU Usage

[CD Ajaykumar]

Hi,

At times, some of the screen processes in our application consume up to 99% CPU time .

These screens processes use a lot of curses functions and we see a lot of EINTR and EIO erros related to these screens in their debug files.

What could be the potential resons for this high CPU usage and how we can get rid of it?
Thanks
Ajay

[Steve Steel]

Hi

This has 2 options

1)Tuning

Does /var/dt/Xerrors $HOME/.dt/startlog $HOME/.dt/errorlo /var/adm/syslog/syslog.log
contain any errors.

2)Patches

This points often to software

Go to http://www.software.hp.com/SUPPORT_PLUS/
and get the quality pack for your box

Steve Steel

[John Bolene]

We sometimes get a random dtlogin that uses quite a bit, some kind of loop somewhere.

We just kill them and continue.

[CD Ajaykumar]

Thanks for the input.
I will check the syslog files.

To overcome this problem, is there any related patch available for Digital UNIX and Tru 64 ?

Thanks
Ajay

[Steven E. Protter]

Performance data collection can help you as well.

I'm attaching a script that runs background, its production, and I've used it for years.

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