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Author Archives kevinclosson

Some Blog Errors Are Just Too Serious To Ignore. A Comparison of Intel Xeon 5400 (Harpertown) to Intel Xeon 5500 (Nehalem EP).

I’d like to direct readers to an important blog update/correction. In my post entitled An Intel Xeon 5400 System That Outperforms An Intel 5500 (Nehalem EP) System? Believe It…Or Know It I blogged about an erroneous conclusion I had drawn about a …

Posted 31 August 2010 § Uncategorized ‡ Comments Off °

Oracle Exadata Database Machine I/O Bottleneck Revealed At… 157 MB/s! But At Least It Scales Linearly Within Datasheet-Specified Bounds!

It has been quite a while since my last Exadata-related post. Since I spend all my time, every working day, on Exadata performance work this blogging dry-spell should seem quite strange to readers of this blog. However, for a while it seemed to me as t…

Posted 28 August 2010 § Uncategorized ‡ Comments Off °

Linux Thinks It’s a CPU, But What Is It Really – Part III. How Do Intel Xeon 7500 (Nehalem EX) Processors Map To Linux OS Processors?

Last year I posted a blog entry entitled Linux Thinks It’s a CPU, But What Is It Really – Part I. Mapping Xeon 5500 (Nehalem) Processor Threads to Linux OS CPUs where I discussed the Intel CPU Topology Tool. The topology tool is most helpful when …

Posted 27 August 2010 § Uncategorized ‡ Comments Off °

What’s Really Happening at OpenWorld 2010? Part II.

The OOW folks informed me that they needed to move our session to a larger room. So, if you are interested here are the new details: ID#: S315110 Title: Optimizing Servers for Oracle Database Performance Track: Database Date: 20-SEP-10 Time: 17:00 &#82…

Posted 27 August 2010 § Uncategorized ‡ Comments Off °

What’s Really Happening at OpenWorld 2010?

This is a quick blog entry to share a few of my plans for OOW. I’ll be co-presenter with a Wallis Pereira, Sr. Technical Program Manager in the Mission Critical Segment of Intel’s Data Center Group. Wally is a very old friend of mine and we’ll be…

Posted 26 August 2010 § Uncategorized ‡ Comments Off °

Do-It-Yourself Exadata-Level Performance! Really? Part IV.

In my post entitled Do-It-Yourself Exadata-Level Performance? Really? I invited readers to visit the Oracle Mix page and vote for my suggest-a-session where I aimed to present on DIY Exadata-level performance. As the following screenshot shows I got a…

Posted 19 August 2010 § Uncategorized ‡ Comments Off °