From: Jean-Marc Monnez (monnez.jean-marc@AGORA.MSA.FR)
Date: Tue Jul 16 2002 - 05:12:22 EDT
lsattr -El proc[01]
shows the status.
Regards
-- JMM
justin.bleistein@sungard.com a écrit :
> This is what I come back with executing the procedure below:
>
> # bindprocessor -q
> The available processors are: 0 1
> # cpu_deallocate 1
> # chdev -a cpuguard=enable -l sys0
> sys0 changed
> # bindprocessor -q
> The available processors are: 0 1
> #
> Am I missing something here I'm still seeing 0,1 which suggests to be still
> two processors are active?. What should I be seeing am I missing something
> thanks!.
>
> --Justin Richard Bleistein
>
> "Dhotre, Shekhar"
> <Shekhar.Dhotre@T To: aix-l@Princeton.EDU
> -T.COM> cc:
> Sent by: IBM AIX Subject: Re: Disable CPUs
> Discussion List
> <aix-l@Princeton.
> EDU>
>
> 07/15/2002 04:55
> PM
> Please respond to
> IBM AIX
> Discussion List
>
> Deallocation of CPU?s with PCI Systems
>
> IT is important to note, that to enable run-time processor deconfiguration,
> you must change a kernel parameter. If cpuguard is disabled, you will not
> be
> able to use CPU_Deallocate successfully. You should first deallocate and
> then change the kernel parameter. You can check the parameter with the
> lsdev
> command.
>
> The order of events is slightly off base, AND poorly documented, but it
> works.
> 1. cpu_deallocate cpunum
> where:
> cpunum is a valid logical cpu number.
> Deallocation command
>
> 2. chdev -a cpuguard=enable -l sys0
>
> Changes kernel parameter
>
> 3. bindprocessor -q
>
> This checks available processors.
>
> After deallocation, you must re-boot your systems in order for the original
> configuration to come back.
>
> With Micro Channel systems, you can use the cpu_state command, which is
> more
> flexible. You do not have to do a re-boot to bring back your original
> configuration.
>
> Micro Channel I/O Systems
> cpu_state
>
> To disable?
> cpu_state -d cpunum
>
> Flags
>
> -d Disables the specified processor.
> -e Enables the specified processor.
> -l Lists the status of all processors.
>
> To change your memory configuration with AIX, you need only use the rmss
> command. You do not have to reboot your machine to go back to your original
> parameters.
>
> 1. To change your current memory size to 100MB, enter:
> rmss -c 100
> 2. To print the current memory size, enter:
> rmss -p
> 3. To reset the memory size to the real memory size of the machine, enter:
> rmss -r
>
> Shekhar Dhotre
> Unix Admin
> Boston, MA-02071
>
> -----Original Message-----
> From: justin.bleistein@SUNGARD.COM [mailto:justin.bleistein@SUNGARD.COM]
> Sent: Monday, July 15, 2002 4:39 PM
> To: aix-l@Princeton.EDU
> Subject: Re: Disable CPUs
>
> I tried using that command on my test system and I get the following error:
>
> # cpu_deallocate -P proc2
> cpu_deallocate requires a logical CPU number
> Usage: cpu_deallocate logical_CPU_id [-P]
>
> I even tried
>
> # cpu_deallocate proc2
> same results
>
> Anyone know the syntax? Lamar?
>
> Thanks!.
>
> --Justin Richard Bleistein
>
> "Saxon, Lamar"
> <Lamar.Saxon@AMERI To:
> aix-l@Princeton.EDU
> CREDIT.COM> cc:
> Sent by: IBM AIX Subject: Re: Disable CPUs
> Discussion List
> <aix-l@Princeton.E
> DU>
>
> 07/15/2002 04:21
> PM
> Please respond to
> IBM AIX Discussion
> List
>
> How about:
>
> /usr/sbin/cpu_deallocate
>
> Lamar
>
> -----Original Message-----
> From: AIX geek [mailto:aixgeek@YAHOO.COM]
> Sent: Monday, July 15, 2002 2:51 PM
> To: aix-l@Princeton.EDU
> Subject: Disable CPUs
>
> Can I disable a CPU on a B80? Is going into the
> service processor menu the only way to do this?
>
> [I seem to remember an old cpu_disable command, that
> was for microchannel SMPs only, if I remember right.]
>
> Thanks,
>
> -AG
>
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