Problem with disk_em and diaglogd

[MassimilianoRHO]

Ciao!
we have a problem with disk_em and diaglogd process because they consuiming more cpu time: disk_em 90% and disglogd 25%.

I've HP-UX B.11.23 U ia64 1458817579 unlimited-user license.

How i can stop process definitely?
thanks
mb

[Matti_Kurkela · Accepted solution]

These processes are parts of "Diagnostic and Support Tools" and normally it's a very good thing to have them running, as they will detect and report hardware failures.

That kind of CPU time consumption is clearly excessive. Which version of the diagnostics you're running? If it's an old one, consider getting up to date (it's free, and can be upgraded without rebooting the server):

http://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6191AAE

I'll definitely NOT recommend uninstalling the diagnostic software.

MK

[whiteknight]

Massi,

It is not recommended to stop permanently, because Diagnostic tools is very important for HP troubleshooting.

please check your current STM version.

http://docs.hp.com/en/diag/stm/stm_upd.htm#table

There is STM patches which will fix the issue.

WK

[MassimilianoRHO]

how i can know my version of STM?
thanks
mb

[whiteknight]

Mb,

# swlist -l product | grep -i Sup-Tool-Mgr
Sup-Tool-Mgr B.11.11.19.01 Support Tools Manager for HPUX systems

WK

[Andrew Merritt_2]

Are you getting any events logged in /var/opt/resmon/log/event.log? Also, run STM and run logtool from there - are there a lot of SCSI I/O errors being logged? The most likely cause of what you're seeing is a disk problem generating a lot of I/O errors which diaglogd and disk_em need to process. If that's the case, it's the hardware that needs to be fixed.

As already advised, you should check you have a current version of the OnlineDiags, this table should help - http://www.docs.hp.com/en/diag/stm/stm_upd.htm#table

Andrew

[Torsten.]

If the system is the same like in your other thread

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1168344

version C.46.05
you should really update it!

This version is from September 2004!

[Andrew Merritt_2]

And if this is the same system as in another of your threads,
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1160426

then you've already had the answer, that it's likely to be a SCSI device that's reporting a lot of errors causing your disk to fill up, and disk_em and diaglogd to burn CPU.

What happened on that system?

Andrew