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тАО01-17-2010 12:46 PM
тАО01-17-2010 12:46 PM
During the booting process of rp3440/hp-ux11i v2. The following was displayed on the console
Memory Class Setup
------------------------------------
Class Physmem Lockmem Swapmem
-------------------------------------
System : 12286 MB 12286 MB 12286 MB
Kernel : 12286 MB 12286 MB 12286 MB
User : 11499 MB 10020 MB 10059 MB
-------------------------------------
What does that mean? Can somebody please give me some explaination by line and columne? What's the total physical memory installed? (I think it's 12G. Is that right?)
Thanks a lot in advance.
Solved! Go to Solution.
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тАО01-17-2010 06:19 PM
тАО01-17-2010 06:19 PM
Re: What does "Memory class setup" mean?
Please check below thread for step by step explanation of HPUX booting process.
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1244789
>>(I think it's 12G. Is that right?)<<<
Yes its 12GB
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тАО01-17-2010 06:39 PM
тАО01-17-2010 06:39 PM
Re: What does "Memory class setup" mean?
Well System line shows the memory installed on the server
so 12286 MB is the physical memory installed
12286 MB is the lockable memory for server.
12286 MB can be used as swap [not very sure on this anyone please explain].
for second line is for the kernel.
Kernel can use 12286 MB and lockable 12286 MB of memory
LAst is the memory available for user.
Hope this would help.
BR,
Kapil+
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тАО01-17-2010 06:56 PM
тАО01-17-2010 06:56 PM
SolutionThe reservation works by having a User Class (user memory comes from here) and a Kernel Class (kernel memory) -- both of which then reserve from the System Class (which represents the available resources on the box as a whole).
Physmem is physical memory. The amount put in the Class is the available memory to the system minus early boot kernel consumption [and any other memory the system does not consider reservable].
Lockmem is Lockable memory - memory resources that are not going to be eligible for paging out (kernel memory is locked, user memory can be locked via interfaces like mlock and plock).
Swapmem is Memory Swap -- memory resources that are allowed to be reserved in lieu of actual physical (disk or filesystem) swap. These are not particular pages, it is simply a matter of extending virtual address swap resources by knowing that the system will have physical swap resources for paging -- and then memory can stay resident and still back virtual objects. Memory swap appears as the "memory" line in swapinfo output.
Total physical memory at boot is likely close to 12Gb, yes -- but the memory _installed_ could be different as things like bad pages or disabled memory ranges could make the kernel view different from the machine view.
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тАО01-17-2010 07:17 PM
тАО01-17-2010 07:17 PM