I think there's an entry from the VMS FAQ for this...
5.7 Why doesn t OpenVMS see the new memory I just added? When adding
memory to an OpenVMS system, one should check for an existing definition
of the PHYSICALPAGES (OpenVMS VAX) or PHYSICAL_MEMORY (OpenVMS Alpha)
parameter in the SYS$SYSTEM:MODPARAMS.DAT parameter database, use a text
editor to reset the value in the file to the new correct value as
required, and then perform the following command: $ _at_SYS$UPDATE:AUTOGEN
GETDATA REBOOT FEEDBACK This AUTOGEN command will reset various system
parameters based on recent system usage (FEEDBACK), and it will reset
the value for the PHYSICALPAGES parameter to the new value. It will also
reboot the OpenVMS system. PHYSICALPAGES and PHYSICAL_MEMORY can also be
used to deliberately lower the amount of memory available for use by
OpenVMS. This ability can be useful in a few specific circumstances,
such as testing the behaviour of an application in a system environment
with a particular (lower) amount of system memory available.
PHYSICALPAGES and PHYSICAL_MEMORY can be set to -1 (on OpenVMS Alpha) or
(better and simpler) the entry can be removed from the MODPARAMS.DAT
file, to indicate that all available memory should be used.
Hope this helps!
Brian
On Fri, 2002-06-07 at 12:41, carlos_murillo_at_epm.net.co wrote:
> Hello everyone;
>
>
> I have noticed that OpenVMS 7.2 doesn't seem to recognize all
> of the physical memory in my vaxstation 4000/60; I am sure
> that I have 32 MB (8MB mainboard + 6 x 4MB modules) and
> in fact it is recognized by the prom:
>
> KR46-A V1.1-31E-V4.0
> 08-00-2B-2A-F8-AB
> 32MB
> |||||||||||||||||||||||||||||||||||||||
>
> OK
>
> 85 RESTART SYS
> >>>
>
> >>> show config
>
> KR46-A V1.1-31E-V4.0
> 08-00-2B-2A-F8-AB
> 32MB
>
> DEVNBR DEVNAM INFO
> ------ -------- -------------------------------
> 1 NVR OK
> 2 LCG OK
> HR - 8PLN FB - V1.1
> 3 DZ OK
> 4 CACHE OK
> 5 MEM OK
> 32MB = SY=8MB, S0/1=8MB, S2/3=8MB, S4/5=8MB
> 6 FPU OK
> 7 IT OK
> 8 SYS OK
> 9 NI OK
> 10 SCSI OK
> 0-ST31200 5-TZ30 6-INITR 7-CD-ROM
> 11 AUD OK
>
> >>>
>
> Similarly, the TEST 100 command tests all of the hardware and
> there aren't any errors. So, as far as the diagnostics in the
> Prom are concerned, the system has 32MB of memory and it tests OK.
>
> But, this is what I get under OpenVMS:
>
> $ show memory
> System Memory Resources on 6-JUN-2000 16:25:53.84
>
> Physical Memory Usage (pages): Total Free In Use Modified
> Main Memory (16.00Mb) 32768 8459 22775
> 1534
>
> Virtual I/O Cache Usage (pages): Total Free In Use Maximum
> Cache Memory 11 0 11 51649
>
> Slot Usage (slots): Total Free Resident Swapped
> Process Entry Slots 48 25 21
> 2
> Balance Set Slots 43 23 19
> 1
>
> Dynamic Memory Usage (bytes): Total Free In Use Largest
> Nonpaged Dynamic Memory 1359360 103552 1255808 12480
> Paged Dynamic Memory 717824 435488 282336 434448
>
> Paging File Usage (pages): Free Reservable Total
> DISK$VAX4000SYS:[SYS0.SYSEXE]SWAPFILE.SYS
> 6240 6240
> 7200
> DISK$VAX4000SYS:[SYS0.SYSEXE]PAGEFILE.SYS
> 55557 15536 65536
>
> Of the physical pages in use, 10827 pages are permanently allocated to
> OpenVMS.
>
>
>
> So, what is happening here? Does anybody have some suggestions
> as to why OpenVMS doesn't see/want to use the remaining 16MB?
>
> Best regards,,
>
> Carlos.
>
>
>
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Received on Fri Jun 07 2002 - 13:08:35 BST