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Full Discussion: CPU performance
Operating Systems AIX CPU performance Post 302989305 by zaxxon on Wednesday 11th of January 2017 03:49:26 AM
Old 01-11-2017
By the output of vmstat -v's numclient it seems there would be enough cached files that could be discarded to get free ram.

The AIO requests do not hit the maxreqs so that's good too.

By the mount options it looks you are not using DIO (Direct IO) nor CIO (Concurrent IO) which is often used to get some performance increase.
We implemented CIO once and it was a huge increase on performance for the Ora DB as the filesystem buffers are not used anymore and Oracle handles it itself.

Implementing it I can not say if it changes to the many blocked threads in the RunQueue.
Though if there would be a need for better performance, this should be a way to go.
For implementing it see the appropriate documentations as it may only be used for some types of Oracle files ie. filesystems.

Another much way, which is a lot more work than just adding mount options and the setting agent.kgb mentioned is using the Oracle ASM where you supply raw devices and Oracle will handle them accordingly. Though I have no experience with it and I am not aware what is the current "state-of-the-art".
Here is a document about implementing ASM:
>>> IBM ASM Doc

For the short glimpse and not knowing if there is some workload peaks, the box seems to could have a bit less CPU and RAM.

Last edited by zaxxon; 01-11-2017 at 04:56 AM..
 

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SQL::Translator::Parser::Oracle(3pm)			User Contributed Perl Documentation		      SQL::Translator::Parser::Oracle(3pm)

NAME
SQL::Translator::Parser::Oracle - parser for Oracle SYNOPSIS
use SQL::Translator; use SQL::Translator::Parser::Oracle; my $translator = SQL::Translator->new; $translator->parser("SQL::Translator::Parser::Oracle"); DESCRIPTION
From http://www.ss64.com/ora/table_c.html: CREATE [GLOBAL TEMPORARY] TABLE [schema.]table (tbl_defs,...) [ON COMMIT {DELETE|PRESERVE} ROWS] [storage_options | CLUSTER cluster_name (col1, col2,... ) | ORGANIZATION {HEAP [storage_options] | INDEX idx_organized_tbl_clause}] [LOB_storage_clause][varray_clause][nested_storage_clause] partitioning_options [[NO]CACHE] [[NO]MONITORING] [PARALLEL parallel_clause] [ENABLE enable_clause | DISABLE disable_clause] [AS subquery] tbl_defs: column datatype [DEFAULT expr] [column_constraint(s)] table_ref_constraint storage_options: PCTFREE int PCTUSED int INITTRANS int MAXTRANS int STORAGE storage_clause TABLESPACE tablespace [LOGGING|NOLOGGING] idx_organized_tbl_clause: storage_option(s) [PCTTHRESHOLD int] [COMPRESS int|NOCOMPRESS] [ [INCLUDING column_name] OVERFLOW [storage_option(s)] ] nested_storage_clause: NESTED TABLE nested_item STORE AS storage_table [RETURN AS {LOCATOR|VALUE} ] partitioning_options: Partition_clause {ENABLE|DISABLE} ROW MOVEMENT Column Constraints (http://www.ss64.com/ora/clause_constraint_col.html) CONSTRAINT constrnt_name {UNIQUE|PRIMARY KEY} constrnt_state CONSTRAINT constrnt_name CHECK(condition) constrnt_state CONSTRAINT constrnt_name [NOT] NULL constrnt_state CONSTRAINT constrnt_name REFERENCES [schema.]table[(column)] [ON DELETE {CASCADE|SET NULL}] constrnt_state constrnt_state [[NOT] DEFERRABLE] [INITIALLY {IMMEDIATE|DEFERRED}] [RELY | NORELY] [USING INDEX using_index_clause] [ENABLE|DISABLE] [VALIDATE|NOVALIDATE] [EXCEPTIONS INTO [schema.]table] Note that probably not all of the above syntax is supported, but the grammar was altered to better handle the syntax created by DDL::Oracle. AUTHOR
Ken Youens-Clark <kclark@cpan.org>. SEE ALSO
SQL::Translator, Parse::RecDescent, DDL::Oracle. perl v5.14.2 2012-01-18 SQL::Translator::Parser::Oracle(3pm)
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