Simpler Navigation for Servers and Operating Systems - Please Update Your Bookmarks
Completed: a much simpler Servers and Operating Systems section of the Community. We combined many of the older boards, so you won't have to click through so many levels to get at the information you need. Check the consolidated boards here as many sub-forums are now single boards.
If you have bookmarked forums or discussion boards in Servers and Operating Systems, we suggest you check and update them as needed.
Operating System - Tru64 Unix
cancel
Showing results for 
Search instead for 
Did you mean: 

CPU EXCEPTION in uerf

kkdurrani
Advisor

CPU EXCEPTION in uerf

Hi all,
We have some performance isssues on alphaserver 4100. Just wondering if these "cpu exception" are hardware related issue.

Kairm

EVENT CLASS ERROR EVENT
OS EVENT TYPE 100. CPU EXCEPTION
SEQUENCE NUMBER 123.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Wed Aug 10 21:01:12 2005
OCCURRED ON SYSTEM cpaprd05
SYSTEM ID x00070016
SYSTYPE x00000000
PROCESSOR COUNT 4.
PROCESSOR WHO LOGGED x00000000

----- UNIT INFORMATION -----

UNIT CLASS CPU

********************************* ENTRY 2. *********************************

----- EVENT INFORMATION -----

EVENT CLASS ERROR EVENT
OS EVENT TYPE 100. CPU EXCEPTION
SEQUENCE NUMBER 122.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Wed Aug 10 21:01:12 2005
OCCURRED ON SYSTEM cpaprd05
SYSTEM ID x00070016
SYSTYPE x00000000
PROCESSOR COUNT 4.
PROCESSOR WHO LOGGED x00000000

----- UNIT INFORMATION -----
9 REPLIES
Ivan Ferreira
Honored Contributor

Re: CPU EXCEPTION in uerf

CPU EXCEPTION messages are often related to memory problems, BUT:

If you are using Tru64 V5 or above, you should not use uerf, you must install and use DECEVENT, the dia command replaces the uerf command. The uerf command wont translate correctly the binary error log.
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
Stuart Fuller_2
Valued Contributor

Re: CPU EXCEPTION in uerf

For each of the entries, is there more information, or was this posting edited down? If edited down, then all the good information has been edited out.
kkdurrani
Advisor

Re: CPU EXCEPTION in uerf

Yeah this posting is edited down for the good view. attached is the full file
Stuart Fuller_2
Valued Contributor

Re: CPU EXCEPTION in uerf

Yep, looks like a job for DECEVENT.
Aaron Biver_2
Frequent Advisor

Re: CPU EXCEPTION in uerf

Hi,
uerf will not help much here. WEBES/WSEA (Compaq Analyze) would be ideal. Support personnel are very adept at interpreting the output.

Was there a crash associated with the event? If so, can you provide the console output (maybe from the crash dump or the /var/adm/messages file) from before and after that event? A stack trace from the crash dump is sometimes useful here, though not likely.


kkdurrani
Advisor

Re: CPU EXCEPTION in uerf

No There was no crash. I have run dia -i cpus. Please help me to figure out if anything suspecious.
Aaron Biver_2
Frequent Advisor

Re: CPU EXCEPTION in uerf

These appear to be hardware-correctable ECC errors. They occur every month or so. Indicates a bit gets whacked every now and again.

Not a big deal, based on what I see in the dia output.
kkdurrani
Advisor

Re: CPU EXCEPTION in uerf

No hardware problems. they are correctable errors
Michael Worthington
Occasional Visitor

Re: CPU EXCEPTION in uerf

Encountered similar issue on Alpha 1200 - identified as faulty memory - resolved by replacement