Re: Managing CPU_COUNT for micro-partitioning on AIX
- From: "Mark Brinsmead" <pythianbrinsmead@xxxxxxxxx>
- To: Brandon.Allen@xxxxxxxxxxx
- Date: Thu, 6 Jul 2006 20:51:58 -0600
Cool. I now know a lot more than I did before. Thanks...
Still, in this situation, it would probably be wise to override the CPU
count the OS is reporting to the database. The OS is obviously lying. ;-)
Reading the AIX manuals more than the sysadmins do? That sounds all too
familiar.
As for not getting "root" passwords, well, that is not uncommon in my
experience. As a DBA, I have been given "root" passwords very rarely
indeed,
and as a sysadmin, I have provided "root" passwords to others even more
rarely. There are matters of responsibility and accountability that need to
be respected, after all. But a sysadmin who disregards (database) tuning
advice from the DBAs (or vice versa) is usually ill advised. Usually. ;-)
I do, however, remember times as a sysadmin when I had DBAs adamantly insist
that I must places specific data files on specific "cylinders" and
specific "surfaces" of the 500 or so SCSI disks I was managing. After
explaining to deaf eafs that neither UNIX nor SCSI really work that way
"ignoring" was the only option I had left. Sometimes it *is* a good
strategy. ;-)
On 7/6/06, oracle-l-bounce@xxxxxxxxxxxxx <oracle-l-bounce@xxxxxxxxxxxxx>
wrote:
More interesting output from another cool utility I just found:
/opt/oracle ->mpstat -s
System configuration: lcpu=10 ent=2.5
Proc0 Proc2 Proc4 Proc6
Proc8
7.33% 4.80% 1.64% 0.49%
0.19%
cpu0 cpu1 cpu2 cpu3 cpu4 cpu5 cpu6 cpu7 cpu8
cpu9
5.77% 1.56% 3.90% 0.90% 1.21% 0.43% 0.31% 0.17% 0.11%
0.07%
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Cheers,
-- Mark Brinsmead
Staff DBA,
The Pythian Group
http://www.pythian.com/blogs
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