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- Newsgroups: comp.sys.novell
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!gatech!rpi!usc!cs.utexas.edu!swrinde!sgiblab!newsun!keith
- From: keith@novell.com (Keith Brown)
- Subject: Re: Novell 3.11 as NFS Unix News Server
- Message-ID: <1992Dec30.202240.13973@novell.com>
- Sender: news@novell.com (The Netnews Manager)
- Nntp-Posting-Host: ca.sjf.novell.com
- Organization: Novell, Inc. San Jose, California
- References: <1992Dec29.183823.2854@amiserv.chi.il.us>
- Date: Wed, 30 Dec 1992 20:22:40 GMT
- Lines: 52
-
- In article <1992Dec29.183823.2854@amiserv.chi.il.us> brianv@amiserv.chi.il.us (Brian Vargyas) writes:
- >
- >I've got a interesting question regarding performance and memory using 3.11
- >as a NFS news server. [...] Well, the 600MB
- >disk had to move to another machine for a reason, and a 1.7GM Maxtor drive
- >was replaced into the 3.11 Server. [...] the NFS news and DOS stuff.
- >I still only have 16MB ram, and I calculated 22MB was required. What will
- >happen in this situation if I don't add more memory?
-
- Increasing the size of the disk (actually the volumes) increase the
- size of the File Allocation Tables that are held in core by NetWare.
- The bigger these get, the less space is left over for cacheing file
- data. One of two things will happen if you don't add more memory.
- Either the volumes won't mount (the RAM/DISK size differential has to
- be out of wack in a pretty major way for this to happen) or you will
- have a smaller and thus less effective disk cache.
-
- >Will NFS eventually run out of memory?
-
- No. Once NetWare NFS has parked itself in to server memory it should be happy
- for the duration. It largely uses the various buffers that already exist
- around it in the OS (LSL buffers, disk cache etc....). Its dynamic memory
- requirements are quite small.
-
- >Even if I put in 22MB of ram..will all those TONS of little news files
- >do anything bad to the memory?
-
- No. Lots of little files being open and closed rapidly and randomly may
- cause some thrashing in the directory cache but I have serious doubts
- that any single application could cause a problem here by itself. The
- directory cache is optimised for loads that 250 DOS clients running
- Windows off of the server might place on it. Handling a UNIX news
- server should be a piece of cake.
-
- >Has anyone used their server as a Unix news server?
-
- Personally, no. I might have done though, were I the IS guy round here.
-
- >Is this a pratical thing for me to be doing?
-
- Sure.
-
- >I am assuming the logical thing here would be to add another 16MB ram and
- >take this machine to 32MB ram...
-
- Well, doing this certainly wouldn't hurt anything.
-
- Keith
- -
- Keith Brown Phone: (408) 473 8308
- Novell San Jose Development Center Fax: (408) 473 8990
- 2180 Fortune Dr, San Jose, California 95131 Net: keith@sjf.novell.COM
-