topic Re: "Dmesg" reply errors in Operating System - HP-UX

"Dmesg" reply errors

RuyiLuo — Mon, 13 Dec 2004 20:14:28 GMT

Hello all.

When I use "Dmesg" command,it replies with errors such like "LPMC type : I-Cache Parity Error."

In syslog.log I see two lines about "Cache":
Dec 5 22:19:19 xgjf1 vmunix: LPMC type : I-Cache Parity Error.
Dec 5 22:19:19 xgjf1 vmunix: LPMC type : I-Cache Parity Error.
But no more information is finded.

MODEL--9000/800/L2000-5X

So what can i do now?Thanks to anyone who gives a advisement

Re: "Dmesg" reply errors

Michael Tully — Mon, 13 Dec 2004 20:21:15 GMT

It;s likely your encountering a processor problem. Another place to look is in the GSP logs. Here is a similar discussion to yours.

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=692543

Re: "Dmesg" reply errors

Steven E. Protter — Mon, 13 Dec 2004 20:32:23 GMT

This is a Low Priority Machine Check

It needs to be dealt with before it becomes a High Priority Machine Check(HPMC)

If that happens its instant crash. In this situation you may come back up with no system due to a system board issue, or short a processor.

This should be dealth with via a hardware call as soon as practical.

SEP

Re: "Dmesg" reply errors

A. Clay Stephenson — Mon, 13 Dec 2004 20:50:18 GMT

Because these two events happened at the same time, for our purposes let's call them the same event. Yours is a Low Priority Machine Check in the Instruction Cache. This is really only of concern if you see it freequently. I'll loosely define frequently as more than about 1 per week. This type of event can literally be the result of comsic or other background radiation although, in general, unless you are in an unusual environment only cosmic radiation is energetic enough to cause this. If you begin to see these events often then it is time to call your HP Mr. Goodwrench and have a processor board replaced.

Re: "Dmesg" reply errors

RuyiLuo — Tue, 14 Dec 2004 03:21:02 GMT

I am sorry that i have ignored the information follows:

Dec 5 22:19:19 xgjf1 vmunix: Parity Error.^M
Dec 5 22:19:19 xgjf1 vmunix: LPMC type : I-Cache Parity Error.^M
Dec 5 22:10:25 xgjf1 cmcld: Warning: cmcld process was unable to run for the last 3 seconds
Dec 5 22:19:19 xgjf1 vmunix: LPMC type : I-Cache Parity Error.^M
Dec 5 22:39:19 xgjf1 above message repeats 80 times
Dec 5 22:10:30 xgjf1 cmcld: Warning: cmcld process was unable to run for the last 3 seconds

It seems terrible.I have made a hardware call,and the result they give me is a problem of Memory.They promise me replacement of Memory.

But i still want to know how to deal with this situation.

Re: "Dmesg" reply errors

Hoang Chi Cong_1 — Tue, 14 Dec 2004 04:44:00 GMT

Hi guru
Here is good link:
http://www5.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000065556468

(You have to type username/password to login)

And here is good thread, it may help you:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=105608

Hope this helps

Regard,

Jimkery

Re: "Dmesg" reply errors

Hoang Chi Cong_1 — Tue, 14 Dec 2004 04:54:04 GMT

Oops, click 'submit' a bit prematurely...

You can check in the syslog.log file for the even ID. Then check in this site:
http://www.docs.hp.com/en/diag/ems/lpmc_em.htm

regard,
Jimkery

Re: "Dmesg" reply errors

Saurav_1 — Tue, 14 Dec 2004 05:34:29 GMT

Confirm that Diagnostics and Patches are updated in your system to latest.

MDT. Memory Deallocation table. and Page deallocation table. Keeps the track of faulty pages in memory. Those pages once locked will not be used again by system.

memlogd is the daemon for this.

Cheers
Saurav