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Conference vaxaxp::vmsnotes

Title:	VAX and Alpha VMS
Notice:	This is a new VMSnotes, please read note 2.1
Moderator:	VAXAXP::BERNARDO

Created:	Wed Jan 22 1997
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	703
Total number of notes:	3722

182.0. "Hung system" by CHEFS::MUNROM () Wed Feb 12 1997 08:14

Hi All,

Customer is running VMS 6.1 on a VAX. On several occasions the system has hung. 
Even Cntrl-Y at the operators console just produces "INTERRUPT" but no further 
response.

Looking at the DECPS data it stops collecting information at 14:30. Analysis of 
the DECPS dump data show the previous  6 minutes indicated no MWAIT states or 
anything suspicious in the DUMP data. Timestamps in the operators log continue 
until 15:03 at which point the customer does CNTRL-P. Analysis of a previous 
crash dump was inconclusive although all of the indications suggest it was 
similar.

The Customer is running Perfecttune, Perfectdisk and PerfectCache. I have seen 
one entry in the STARS database, article reference C940503-6781 but this applies  
to VMS 6.0 not 6.1. Analysis of the previous crash dump produce output similar 
to that in article.

Rgds,

Mark

T.R	Title	User	Personal Name	Date	Lines
182.1	I've seen similar probs from PERFECTUNE	POMPY::LESLIE	Andy Leslie, DEC man walking...	`Wed Feb 12 1997 08:44`	2
	Turn off the RAXCo products. If the behaviour continues, get a crash dump and IPMT. If the behaviour ceases, take it to RAXCO.
182.2		BSS::JILSON	WFH in the Chemung River Valley	`Wed Feb 12 1997 09:07`	8
	Next time it hangs, take 2-3 dozen PC samples from the console (ie halting the system then continuing it and wrtite down the PC) and then force a crash. Make sure the system is set-up to take a full memory dump as a partial dump is more than likely not to have the interesting info needed to analyze the hang. Additionally you could leave a process logged in at priority 17 and see if that process will respond if/when the system hangs. Jilly
182.3		AMCFAC::RABAHY	dtn 471-5160, outside 1-810-347-5160	`Thu Feb 13 1997 08:55`	9
	Supposedly extending a very large directory can cause behavior like this. $ i = 1 $ loop: $ create x'i'.x $ i = i + 1 $ goto loop I don't know if I believe.