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тАО04-29-2002 10:07 PM
тАО04-29-2002 10:07 PM
N class cpu missing..
We have an N Class server with 8 CPU's running HP-UX 11.0, Today I checked the top processes and found out only 7 CPU's (no 0 to 6) are busy with processes running. The 8th CPU is missing.
I also checked with STM.. it was also listing only 7 CPU's.. Is my CPU dead? How do I check? The System presently is running and doing some number crunching and I cannot shutdown for another week! Pls give ur valuable suggestions!
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тАО04-30-2002 12:29 AM
тАО04-30-2002 12:29 AM
Re: N class cpu missing..
have you checked the error log file for indication of faied processor.
/var/adm/syslog/syslog.log
also
dmesg | more
also
ioscan -fnCprocessor ( this will list all processors active or inactive )
cheers
John.
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тАО04-30-2002 12:52 AM
тАО04-30-2002 12:52 AM
Re: N class cpu missing..
To check the number of running processors you could use :
root/sv00154#echo "runningprocs/D" | adb -k /stand/vmunix /dev/mem
runningprocs:
runningprocs: 8
Alternatively, check in glance (CPU by processor).
Check the logs in GSP (SL command).
Oh, b.t.w. are you using ICOD CPU's ? If so, have all of them been activated ?
Hope this helps you determine the problem,
Tom
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тАО04-30-2002 01:58 AM
тАО04-30-2002 01:58 AM
Re: N class cpu missing..
The ioscan, runningprocs commands shows only 7 CPU's..
The GSP log has one particular entry having 1 processor as timeout.. Also there is a difference between the no of processors claimed in the syslog.log and oldsyslog files.. now Im certain that 1 CPU is having some genuine problem..
I could like to know how to physically identify the particular faulty one? Any Inputs?
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тАО04-30-2002 02:15 AM
тАО04-30-2002 02:15 AM
Re: N class cpu missing..
N Class CPUs handles LPMCs better than the K-Class or D-Class. If 1 CPU exhibits 3 LPMCs in 24 hours, that CPU is not used anymore. It is shown in ioscan, but with the "top" command, it can be verified that the CPU is idle.
Replace the CPU which "top" says it is idle.
HTH,
Vince
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тАО04-30-2002 03:31 AM
тАО04-30-2002 03:31 AM
Re: N class cpu missing..
Go to BCH (boot menue) if you can,
MainMenue->Information->PR and observe
the 'Processor State',it can be either 'Active'
or 'Stopped:Nonresponding'.
Also advised to run there (under Main->Info)
FV - firmware version and write it down.
Also nice thing is to use STM's logtool utility
(in stm,before checking specific hardware go
to 'tools'->'utility'->'run'->'logtool')It will
format log of events monitored by stm daemon,which should include cpu problems).Of course,in case that cpu got lost after reboot.
good luck
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тАО04-30-2002 03:42 AM
тАО04-30-2002 03:42 AM
Re: N class cpu missing..
you can check online with the GSP comman "ss" which processors are configured.
The output normally looks like:
GSP> ss
SS
System Processor Status:
Monarch Processor: 0
Processor 0 is : Installed and Configured
Processor 1 is : Installed and Configured
Processor 2 is : Installed and Configured
Processor 3 is : Installed and Configured
Processor 4 is : Installed and Configured
Processor 5 is : Installed and Configured
Processor 6 is : Installed and Configured
Processor 7 is : Installed and Configured
Best regards
Stefan Stechemesser
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тАО04-30-2002 05:48 AM
тАО04-30-2002 05:48 AM
Re: N class cpu missing..
If your dmesg is running fine then you can just do a dmesg | grep Proc | wc -l and that will give the no. of processor which are being sensed and are working . One more way is to go to SAM--->Performance Monitoring ----> system Properties .I think that you are counting the last cpu as no 7 where as the cpu's start form 0 and not 1.
Manoj Srivastava
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тАО04-30-2002 07:27 AM
тАО04-30-2002 07:27 AM
Re: N class cpu missing..
Login to GSP and see whether it creates any errolog on GSP. After logging to GSP give SL for System Log , then E for error log. And accordingly inform HP for CPU replacement.
Sandip