Re: kernel space and user space in RHEL AS3.0

In alt.os.linux Jun <juntaroo2000@xxxxxxxxxxx>:
"Jeroen Geilman" <not@xxxxxxx> wrote in message
news:h8st54-d82.ln1@xxxxxxxxxxxxxxxxx
Jun wrote:

[ fixed top posting, general formatting ]

I'm planning to setup 32bit RHEL 3.0 with enterprise kernel
IBM machine has 16GB physical Memory What size estimate
Kernel space and User space?
[..]

Since the static (code) portions of the kernel don't grow, you
need only be concerned with how much dynamic memory is needed
- if you expect to run thousands of processes, use megabytes
of buffered disk access, and ridiculously large stack spaces
needed by very badly written applications, then the kernel
space becomes an issue.

I didn't know you could even adjust this for Linux.

This machine will be used for Database server for Oracle 10g.
Some Oracle articles say that Oracle VLM can allocate Physical
Mem to User space as database cache. If a larger kernel space
needed , can we control a ratio of Kernel space and User space
?

Remote guess you are talking about Oracle SGA and alike stuff,
the info about memory split can be found (www.redhat.com) in the
technical specs for RHEL.

I strongly suggest to take a deep look at www.puschitz.com.
You'll find there very well written guides how to setup various
versions of Oracle on RHEL and how to go about kernel tuning for
Oracle.

Good luck

--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo zvpunry@xxxxxxxxxx | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 75: There isn't any problem
.

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