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Operating Systems AIX How to measure waiting time in run queue? Post 302803019 by GiiGii on Sunday 5th of May 2013 05:45:03 PM
Old 05-05-2013
Quote:
Originally Posted by MichaelFelt
This would depend on what you are trying to collect.

One, classic approach, might be to use sar perhaps.

A different approach would be to use AIX Advanced Accounting.

If you are looking for a deep approach, and are looking at a specific process (rather than all processes) of a know PID and/or TID you could use various trace based tools (e.g., tprof, curt, etc) and/or trace and trcrpt. Rather than PID this could also be command name - there are too many options to name them all.

And, another option could be using probevue mechanism.

Hope this helps!

Hello,

Thank you for your answers. I should have specify my working environment :

Business app : SAP R3 on Oracle Cluster-ware
DB : Oracle 11g + RAC
FS : GPFS
OS : AIX 6.1
Servers : IBM psystem (Power7 CPU)

We are investigating divergence between real CPU consumption versus 'sap + rac oracle + gpfs' benchmarks in order to challenge our advanced support from SAP and Oracle.

By the way, I am not a AIX sysadmin neither I am an AIX expert. And unfortunately, I do not have hands over the system. To do something on the system, I have to ask our contractor in charge of. However, I understand thing well ... I think Smilie

About your propositions :

First thing first, I want just graph this waiting time over the time no matter the process. I should read more carefully the SAR doc. I didn't know about the AIX advanced accouting system. Hence, I printed the doc and now I have to read it Smilie

If we find something particuliar, I may go for a deep analysis but not with a real time trace I that is possible. We ran some CURT (3 time 1 minutes) and heavily impacted our 6000 users :x

Thank you again for your time. I will be certainly back with others questions and I hope results.

Regards
 

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DBIx::Class::Storage::DBI::Oracle::WhereJoins(3)	User Contributed Perl Documentation	  DBIx::Class::Storage::DBI::Oracle::WhereJoins(3)

NAME
DBIx::Class::Storage::DBI::Oracle::WhereJoins - Oracle joins in WHERE syntax support (instead of ANSI). PURPOSE
This module is used with Oracle < 9.0 due to lack of support for standard ANSI join syntax. SYNOPSIS
DBIx::Class should automagically detect Oracle and use this module with no work from you. DESCRIPTION
This class implements Oracle's WhereJoin support. Instead of: SELECT x FROM y JOIN z ON y.id = z.id It will write: SELECT x FROM y, z WHERE y.id = z.id It should properly support left joins, and right joins. Full outer joins are not possible due to the fact that Oracle requires the entire query be written to union the results of a left and right join, and by the time this module is called to create the where query and table definition part of the SQL query, it's already too late. METHODS
See DBIx::Class::SQLMaker::OracleJoins for implementation details. BUGS
Does not support full outer joins. Probably lots more. SEE ALSO
DBIx::Class::SQLMaker DBIx::Class::SQLMaker::OracleJoins DBIx::Class::Storage::DBI::Oracle::Generic DBIx::Class AUTHOR
Justin Wheeler "<jwheeler@datademons.com>" CONTRIBUTORS
David Jack Olrik "<djo@cpan.org>" LICENSE
This module is licensed under the same terms as Perl itself. perl v5.16.2 2012-08-16 DBIx::Class::Storage::DBI::Oracle::WhereJoins(3)
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