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- Path: sparky!uunet!spool.mu.edu!agate!darkstar.UCSC.EDU!osr
- From: keller@cse.ucsc.edu (Jeffrey Keller)
- Newsgroups: comp.os.research
- Subject: Re: WINDOWS/NT
- Date: 11 Sep 1992 17:00:37 GMT
- Organization: University of California, Santa Cruz (CE/CIS Boards)
- Lines: 39
- Approved: comp-os-research@ftp.cse.ucsc.edu
- Message-ID: <18qjblINNepv@darkstar.UCSC.EDU>
- References: <18lc72INN47e@darkstar.UCSC.EDU> <18o3ueINNorf@darkstar.UCSC.EDU> <18obp3INNquh@darkstar.UCSC.EDU>
- NNTP-Posting-Host: ftp.cse.ucsc.edu
- Originator: osr@ftp
-
- Can anyone tell us something concrete about the architecture and
- capabilities of Windows/NT? For example, although I know almost
- nothing about Windows/NT, I expect it to resemble OS/2, and I do
- know something about what that provides:
-
- virtual memory (address space of 2GB or something)
- dynamic link libraries
- preemptive multitasking (processes have distinct address spaces)
- threads (sharing data segment)
- adjustable priorities for threads and processes
- semaphores
- the ability to trample most anything in a device driver
- (for example, allocating physical memory)
-
- It does not provide fine gradations in privileges: device drivers
- run as superuser and all other processes are mundane.
-
- It does not provide memory-mapped files or sophisticated real-time
- support such as system calls to pin pages into physical memory, but
- such things could probably be added without major redesign.
-
- It does not provide multi-user support (ownership and restricted
- access to files, processes, etc.). There may be hooks somewhere to
- allow this to be fixed, but I haven't seen them.
-
- In short, it's a respectable single-user operating system, but
- it's crippled with regard to sharing resources among users. You
- could add, say, kerberos and AFS and access resources on a network
- in a reasonable fashion, but when it comes to sharing the machine
- or enforcing accounting or any other restrictions on local processes,
- you lose.
-
- So, on this level, what can be said about Windows/NT?
-
- --
- Jeff Keller <keller@cse.ucsc.edu> CIS Board, UCSC
- "If X is the answer, what was the question?" --David Fuller
-
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