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тАО04-19-2005 03:02 AM
тАО04-19-2005 03:02 AM
HP-UX 11.11 QUESTION: 2G RAM installed; only 312MB real memory available
Model: 9000/785/J5600
Physical Memory: 2049.8 MB
Real Memory:
Active: 278716.9 KB
Total: 324633.4 KB
When I checked the memory resource in SAM, I saw 2G physical memory installed, but only 312M real memory available. Why?
How can I make more real memory available?
Thanks.
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тАО04-19-2005 03:06 AM
тАО04-19-2005 03:06 AM
Re: HP-UX 11.11 QUESTION: 2G RAM installed; only 312MB real memory available
Check the kernel parms
dbc_max_pct
dbc_min_pct
If you left the default for the max - it's 50% & that can chew up a full Gig. Use bufpages & nbuf to hard set the buffer cache to around 400MB & that should free up some memory.
HTH,
Jeff
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тАО04-19-2005 03:13 AM
тАО04-19-2005 03:13 AM
Re: HP-UX 11.11 QUESTION: 2G RAM installed; only 312MB real memory available
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тАО04-19-2005 08:46 PM
тАО04-19-2005 08:46 PM
Re: HP-UX 11.11 QUESTION: 2G RAM installed; only 312MB real memory available
Is this by any chance a new system build...?
I had seen a similar case recently when a "standard server build" was applied to a technical workstation (ie kernel tunables were set way too high and the kernel itself appeared to be 'chewing up' far too much memory resource) - reducing the kernel tunables to 'sensible' values for this particular system appeared to resolve the issue...
HTH
Nick
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тАО09-27-2005 08:12 AM
тАО09-27-2005 08:12 AM
Re: HP-UX 11.11 QUESTION: 2G RAM installed; only 312MB real memory available
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тАО09-27-2005 08:25 AM
тАО09-27-2005 08:25 AM
Re: HP-UX 11.11 QUESTION: 2G RAM installed; only 312MB real memory available
That said, what runs on this server?
Is that with just the OS running?
Download and compile the attached c program (with the native compiler on HP).
It is called memdetail - and gives some nice info...
Another good utility - kmeminfo
Check out this thread:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=725841
Rgds...Geoff