Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!gatech!mcnc!rti!bnrunix!dfh
From: dfh@bnrunix.UUCP (David F. Hinnant)
Newsgroups: comp.sys.hp
Subject: HP kernel memory usage - how much and where?
Keywords: HP 9000-360, video RAM, buffers, kernel memory
Message-ID: <167@bnrunix.UUCP>
Date: 22 May 89 01:38:37 GMT
Organization: BNR Inc., RTP, NC
Lines: 21

When my HP-9000/360 (8 MB RAM, 19" B&W monitor) boots, it finds 8 MB of
real memory, and then tells me that about 6 MB is available as user
memory and a somewhat smaller number is lockable. Now the questions:

1) What is lockable memory (I presume this means that processes using
this memory can be locked in RAM.) and why is it different from user
memory?

2) My bare HP-UX kernel sizes at about 940K. What eats the remaining
~1.6 MB beside disk buffers? NFS cache? Is there anything that describes
which tunable parameters bump static tables and which tables are
allocated at boot time? I guess the video is memory mapped. How much
does this eat?

Thanks,


-- 

David Hinnant                    UUCP: ...{decvax,akgua}!mcnc!rti!bnrunix!dfh
Bell Northern Research           (919) 991-8299