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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Limiting CPUs on SUN
Justin has a good point. Even if you can create a processor set
with just X CPUs, and get all the oracle processes to bind to that
processor set, you'll still need to convince Oracle that you're in=20
compliance. ;-)
Mark J. Bobak
Oracle DBA
ProQuest Company
Ann Arbor, MI
"Post Hoc Ergo Propter Hoc"
-----Original Message-----
From: Justin Cave (DDBC) [mailto:jcave_at_ddbcinc.com]=20
Sent: Wednesday, May 12, 2004 1:48 PM
To: oracle-l_at_freelists.org
Subject: 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.
=3D20
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.
=3D20
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.
=3D20
Sun does have a psrset command I just heard of. Will that do the job
for
them?
=3D20
Thanks
Larry Wolfson
=3D20
=3D20
We did this on TRU64 but we had to modify the OS ourselves. Not a
popular decision.
=3D20
=3D20
NAME
psrset - creation and management of processor sets=3D20
SYNOPSIS psrset -a processor_set_id processor_id...=3D20
psrset -b processor_set_id pid...=3D20
psrset -c [processor_id]...=3D20
psrset -d processor_set_id=3D20
psrset -e processor_set_id command [argument(s)]=3D20
psrset -f processor_set_id=3D20
psrset [-i] [processor_set_id]...=3D20
psrset -n processor_set_id=3D20
psrset -p [processor_id]...=3D20
psrset -q [pid]...=3D20
psrset -r processor_id...=3D20
psrset -u pid...=3D20
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=3D3D-%2F%2FSun%3A%3ASunSoft%2F%2FDOCUMENT+REFMAN2+=
V
e=3D
r
sion
+2.0%2F%2FEN;localinfo=3D3Dpset-create-2;type=3D3D> 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 =3D20
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