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- From: cs4w+@andrew.cmu.edu (Charles William Swiger)
- Newsgroups: comp.sys.next.software
- Subject: Re: nbuf=64/128 theory
- Message-ID: <gezPnky00WBO04CO1Y@andrew.cmu.edu>
- Date: 9 Nov 92 01:20:48 GMT
- Organization: Senior, Chemistry, Carnegie Mellon, Pittsburgh, PA
- Lines: 32
- In-Reply-To: <1992Nov8.130418.19237@wam.umd.edu>
-
- Excerpts from netnews.comp.sys.next.software: 8-Nov-92 nbuf=64/128
- theory by L. Anathea Brooks@wam.um
- > I've changed my boot params using nbuf=128 or rather
- > nbu=128 because of 12 character limit.
- >
- > Now, I know this will speed up long compilations, perhaps
- > various sorts of number crunching. BUT is there any advantage
- > or speed gain in workaday world? I notice none, and wonder if
- > the memory used by the buffer might be better used as just
- > plain old memory.
-
- This seems to reduce the amount of drive access done under 3.0 quite
- noticably. It will help during any complex file access activity, such
- as compiling, using a database, navigating the filesystem with a
- browser, etc.
- This will also greatly speed up the floppy drive, once the disk pages
- have been loaded into memory. What you are doing is increasing the
- amount of paging activity slightly in order to considerably improve the
- disk caching performance of the filesystem.
-
- You may not need to have nbuf set that high is you don't do a lot of
- compiles. As a general rule, try setting nbuf equal to 5% of your real
- memory. For you that would be around 96.
-
- -Chuck
-
-
- +---------------------------------------------+
- | Charles William Swiger -- CMU sucks rocks | "The television screen is the
- | AMS & normal mail: cs4w+@andrew.cmu.edu | retina of the mind's eye."
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