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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Limiting CPUs on SUN
CPU_COUNT won't limit Oracle to running on a subset of CPU's.
If my reading of the Oracle licensing materials is correct (I don't even play a lawyer on TV), Oracle ignores any software partitioning in place when assessing license fees. If you have X+14 CPUs, Oracle will do its best to assess X+14 CPU licenses.
Justin Cave
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC
-----Original Message-----
From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Wolfson Larry -
lwolfs
Sent: Wednesday, May 12, 2004 11:37 AM
To: oracle-l_at_freelists.org
Subject: Limiting CPUs on SUN
Wanted to check on this.
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Client (Currently 8174) discovered they're only licensed for X CPUs
where they have X+14. They want to limit this to be in compliance and
still run associated apps.
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Someone's looking at CPU_COUNT which I don't think really works at
limiting anything. I've seen it set higher than actual by some DBAs,
but didn't hear what benefit that really was.
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Sun does have a psrset command I just heard of. Will that do the job
for
them?
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Thanks
Larry Wolfson
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We did this on TRU64 but we had to modify the OS ourselves. Not a
popular decision.
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NAME
psrset - creation and management of processor sets=20
SYNOPSIS psrset -a processor_set_id processor_id...=20
psrset -b processor_set_id pid...=20
psrset -c [processor_id]...=20
psrset -d processor_set_id=20
psrset -e processor_set_id command [argument(s)]=20
psrset -f processor_set_id=20
psrset [-i] [processor_set_id]...=20
psrset -n processor_set_id=20
psrset -p [processor_id]...=20
psrset -q [pid]...=20
psrset -r processor_id...=20
psrset -u pid...=20
DESCRIPTION
The psrset utility controls the management of processor sets. Processor
sets allow the binding of processes to groups of processors, rather than
just a single processor. There are two types of processor sets, those
created by the user using the psrset command or the pset_create(2)
<@FPI2SOI;targetdocent=3D-%2F%2FSun%3A%3ASunSoft%2F%2FDOCUMENT+REFMAN2+Ve=
r
sion
+2.0%2F%2FEN;localinfo=3Dpset-create-2;type=3D> system call, and those
automatically created by the system. Processors assigned to user-created
processor sets will run only LWPs that have been bound to that processor
set, but system processor sets may run other LWPs as well.
System-created processor sets will not always exist on a given machine. When they exist, they will generally represent particular characteristics of the underlying machine, such as groups of processors that can communicate more quickly with each other than with other processors in the system. These processor sets cannot be modified or removed, but processes may be bound to them.
l =20
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