OakTable World 2012 Reply

This Monday Oct 1, 2:00-2:50PM I’ll be presenting at the OakTable World which used to be called as Oracle Closed World, this year it’s a full two-day conference with awesome speakers lineup and very interesting topics… you can just watch this video by Mogens Norgaard to know more about the roots of this very technical event.

My presentation title is “Where did my CPU go?” – monitoring & capacity planning adventures on a consolidated environment .. and If you love to hack the ASH and AWR data and curious about CPU capacity planning then you’re really going to enjoy this session.. it’s going to be all about CPU ;)


The effect of ASM redundancy/parity on read/write IOPS – SLOB test case! for Exadata and non-Exa environments 13

Last week I had a lengthy post at oracle-l that tackles Calibrate IO, Short Stroking, Stripe size, UEK kernel, and ASM redundancy effect on IOPS Exadata which you can read here
followed by interesting exchange of tweets with Kevin Closson here (see 06/21-22 tweets) which I was replying in between games at UnderwaterHockey US Nationals 2012 which we won the championship for the B division ;) I have my awesome photo with the medal here

This post will detail on the ASM redundancy/parity effect on IOPS… if… by changing the ASM redundancy (external, normal, and high) will it decrease the workload read/write IOPS or stay as is. I’ll walk you through the step by step on how I did the instrumentation + the test case itself then end with some results and observations.

Let’s get started!


IOsaturationtoolkit-v2 with Exadata IORM and AWESOME text graph 2

I’ve got a new version of IOsaturation toolkit which you can download here http://karlarao.wordpress.com/scripts-resources/ and it has a cool script called “smartscanloop” that shows you the Smart Scan MB/s per database across the Exadata  compute nodes.. it’s a per 2secs sample so that’s a pretty fine grained perf data and near real time text graph. Very useful for doing IORM demos and monitoring what database is currently hogging the IO resources and since it’s presented in a consolidated view you don’t have to go to each Enterprise Manager performance page and have a bunch of browser windows open.

The SECTION 1 is what I usually use to validate the IO numbers on the database side from my Orion (see oriontoolkit here) and Calibrate IO runs. I’ve been using it for quite a while on new RAC/non-RAC installations from client sites.. and I used it heavily on my R&D server while continuously enhancing the toolkit