Friday Jan 24, 2014

Friday Spotlight: Maximizing Oracle Linux Performance

Happy Friday!

Our spotlight this week is on a fantastic screencast video by Oracle's Greg Marsden. In the video, Greg covers a number of specific tips to help maximize performance of your Oracle Linux deployment. Give it a watch by clicking below:

See you next week!

-Chris 

Friday Dec 06, 2013

Oracle Linux Friday Spotlight - December 6, 2013

Happy Friday!

By now, you've probably heard about the release of Oracle Linux 6.5. One really cool thing about this release is that Unbreakable Enterprise Kernel Release 3 is installed by default, meaning you get to use all the great features of UEK R3 without needing to do a separate installation. And are there a lot of great features in UEK R3! So, our spotlight this week is on the release notes for the latest version of Oracle's Unbreakable Enteprise Kernel.

Unbreakable Enterprise Kernel Release 3 release notes

You'll learn about Control Groups, Linux Containers, DTrace, additional crypto options, improved diagnostics, the updated btrfs, better memory management, more networking options, improvements for performance, security, storage, and much more.

See you next Friday!

-Chris 

Tuesday Nov 19, 2013

Learn to Install, Configure, Maintain, Update, and Secure Linux

Linux system administration skills are much sought after in the workplace. To take full advantage of the innovations, performance and scalability of Oracle Linux while building your system administrator knowledge, taking training from the experts.

You can attend live, instructor-led training from your own office through live-virtual classes, choosing from a selection of events on the schedule to suit different timezones.

Alternative, you can travel to an education center for an in-class event. Below is a selection of the in-class events already on the schedule.

In the 5-day Oracle Linux System Administration course, you learn how to install, configure, maintain, update and secure Linux.

 Location

 Date

 Delivery Language

 London, England

 16 December 2013

 English

 Manchester, England

 27 January 2014

  English 

 Reading, England

 12 May 2014

  English 

 Milan, Italy

31 March 2014

 Italian

 Rome, Italy

 10 February 2014

 Italian

 Warsaw, Poland

 9 June 2014

 Polish

 Bucharest, Romania

 20 January 2014

 Romanian

 Ankara, Turkey

 12 January 2014

 Turkish

 Istanbul, Turkey

 16 December 2013 

 Turkish

 Casablanca, Morocco

 16 December 2013

 English

 Muscat, Oman

 2 March 2014

 English

 Johannesburg, South Africa

 17 February 2014

 English

 Tunis, Tunisia

 31 March 2014

 French

 Jakarta, Indonesia

 9 December 2013

  English 

 Kuala Lumpur, Malaysia

 25 November 2013

 English

 Makati City, Philippines

 9 December 2013

 English

Singapore 

 25 November 2013

  English 

 Bangkok, Thailand

 24 February 2014

 English

 Melbourne, Australia

 16 December 2013

 English

 Sydney, Australia

 30 January 2014

 English

Mississauga, Canada

 24 February 2014

 English

 Ottawa, Canada

 28 April 2014

 English

 Belmont, CA, United States

 10 February 2014

  English 

 Irvine, CA, United States

 12 May 2014

 English

 San Francisco, CA, United States

 13 January 2014

 English

 Chicago, IL, United States

 14 April 2014

 English

 Roseville, MN, United States

 10 February 2014

 English

 Edison, NJ, United States

10 March 2014 

 English

 Columbus, OH, United States

14 April 2014 

 English

 Caracas, Venezuela

13 January 2014  

  Spanish 

In the 3-day Oracle Linux Advanced System Administration course you go further by learning to manage and allocate resources, and identify and diagnose performance problems.

 Location

 Date

 Delivery Language

 Jakarta, Indonesia

 28 January 2014

 English

 Bangkok, Thailand

 2 December 2013

 English

 Melbourne, Australia

 8 January 2014

  English 

 Sydney, Australia

 29 January 2014

 English

 San Francisco, CA, United States  

6 January 2014

 English

 Roseville, MN, United States

 25 November 2013

 English

 Edison, NJ, United States

 28 May 2014

 English

 Columbus, OH, United States

20 January 2014 

 English

 Irving, TX, United States

 16 April 2014

 English

 Reston, VA, United States

17 February 2014  

 English

 Caracas, Venezuela

24 February 2014  

 Spanish

For more information about the Oracle Linux system administration curriculum, to register for an event, or to request an additional event, go to http://oracle.com/education/linux.

Prove your Linux system administration expertise by taking the Oracle Linux OCA certification exam.

Tuesday Sep 17, 2013

Performance Issues with Transparent Huge Pages (THP)

One key reason customers choose Oracle Linux is the investment Oracle makes in optimizing Linux for demanding workloads.  Part of this work includes extensive testing for I/O intensive workloads, like the Oracle Database. A common test used at Oracle to measure I/O throughput and performance is the Oracle Orion Calibration Tool, which simulates the I/O workloads of an Oracle Database. Recently, the Oracle Linux team discovered a significant lag in I/O performance, which was later traced to a feature in the Linux kernel, Transparent Huge Pages (also known as THP). During these tests, our engineering teams discovered THP introduced a 30% performance degradation in I/O throughput. When Transparent Huge Pages were removed from the kernel, performance values returned to their expected levels.

Our engineers have been working with the community to identify the root cause of this performance problem, which also impacts other projects, such as Hadoop. Oracle’s kernel engineers have traced the performance issues with Transparent Huge Pages to its use of swappable hugepages. Prior to THP, hugepages were not swappable. It appears the overhead generated by this implementation is the root cause of the deterioration seen in performance when the feature is enabled (compiled) in the kernel. Our kernel engineers are working on several changes to the code which they believe will improve performance with THP, but the final resolution will take time to develop, test and release.

Due to the impact this feature has on performance with applications like the Oracle Database and the timing of a final fix, Oracle Linux will disable Transparent Huge Pages in the Unbreakable Enterprise Kernel, beginning with Quarterly Update 5 for the Unbreakable Enterprise Kernel, Release 2 (version 2.6.39-400.209.1). To maintain binary compatibility with the Red Hat distribution, the Red Hat Compatible kernel will be left as is, with Transparent Huge Pages enabled. In addition, the Oracle Database team has released an alert recommending all customers disable THP in all Linux systems running RAC and even those systems running single instances, due to instability. Please note that THP is not used by the Oracle Database, the recommendation is to use huge pages. Additional information for huge pages can be found in your Oracle Database documentation or on My Oracle Support.

Our engineers will continue to work with others in the community on a final resolution to the performance issues seen with Transparent Huge Pages. Once a fix is available, we will re-enable this feature in the Unbreakable Enterprise Kernel.

Tuesday Mar 13, 2012

Unbreakable Enterprise Kernel Release 2 has been released

We’re proud to announce the availability of a major enhancement to Oracle Linux: Unbreakable Enterprise Kernel Release 2 (2.6.39) has been released! The RPM packages are now available from the Unbreakable Linux Network and the public yum repositories. This kernel can be installed on both Oracle Linux 5.8 and newer as well as Oracle Linux 6.2 and newer. By simply updating the Unbreakable Enterprise Kernel, Oracle Linux customers can benefit from the latest improvements that have taken place in mainline Linux, without having to re-install their distribution or applications.

This release includes many new features as well as numerous performance and scalability improvements that were added to mainline Linux since the first Unbreakable Enterprise Kernel release (which is based on Linux 2.6.32). Despite the version number, the Unbreakable Enterprise Kernel Release 2 is based on mainline Linux 3.0.16 and includes a few selected patches from other mainline Linux versions. The source code is available from this public git source code repository.

Some key highlights in this release include:

  • Btrfs file system
  • Performance and scalability improvements
  • Virtualization improvements
  • Transparent Huge Pages and Memory compaction
  • Cgroups improvements
  • Linux Containers
  • OCFS2 improvements
  • Updated Device Drivers

For more information, please see the Unbreakable Enterprise Kernel Release 2 features and benefits document and consult the release notes for more For installation instructions, check out the Getting Started with the Unbreakable Enterprise Kernel installation guide on the Oracle Technology Network.

Now that the Unbreakable Enterprise Kernel Release 2 has been released, we will continue to provide support for Release 1 of the Unbreakable Enterprise Kernel (2.6.32) in the form of critical bug fixes and security errata for another 9 months. However, new hardware enablement (e.g. by providing device driver updates) will now only be made available through the quarterly updates of Unbreakable Enterprise Kernel Release 2 on the Unbreakable Linux Network. During this grace period, we encourage all customers to switch to Release 2.

Thursday Feb 16, 2012

WEBCAST: Leveraging Linux Innovations for Extreme Performance with Oracle Exadata

You are invited to the live Webcast: 

Event Date: Wednesday, March 7, 2012

Time: 10:00 AM PT

With thousands of installations already in place, Oracle Exadata is the ideal platform for consolidating multiple workloads onto private clouds, while delivering extreme performance and lower cost. It is a complete package of servers, storage, InfiniBand networking, and software and includes Oracle Linux with Unbreakable Enterprise Kernel. Oracle Linux has been optimized to offer extreme performance for Exadata implementations. 

Join us  for a Webcast to hear Oracle's Linux and Exadata experts talk about:

  • The benefits of using Oracle Linux with Oracle Exadata
  • Specific optimizations in Linux to support Exadata
  • Extreme performance advantages from using the Unbreakable Enterprise Kernel
  • Suitable workloads

Tuesday Jan 17, 2012

Oracle Linux with UEKR2 running on a Sun Fire X4800 M2 server sets a new TPC-C world record on x86

We issued the following press release today: Oracle Extends Performance Leadership with x86 World Record on TPC-C Benchmark

"Oracle’s Sun Fire X4800 M2, running Oracle Linux with the Unbreakable Enterprise Kernel Release 2, Oracle Tuxedo, and Oracle Database 11g Release 2, achieved 4,803,718 transactions per minute (tpmC) with a price/performance of $.98/tpmC."

 The benchmark was performed on the following Oracle stack:

  • Sun Oracle x4800 M2 system with 4TB RAM and 160 CPU threads
  • Oracle Linux with Unbreakable Enterprise Kernel Release 2
  • Oracle Database 11gR2

Update (2012-01-18): More details about the benchmark configuration can be found in this blog post over at the Oracle BestPerf blog.
2nd Update (2012-01-18): The full disclosure report is now available as a PDF from here.

Looking at the current non-clustered benchmark results on tpc.org, this submission delivers the best result performed on an x86 system, ranking  #3 overall for non-clustered TPC-C workloads. It's also worth pointing out that this system has a much better price/performance ratio ($0.98/tpmC) than the top 2 on this list ($2.81/tpmC).

This is a very impressive result – handling this kind of workload on 4TB RAM and 160 CPU threads clearly shows the scalability possibilities of running Oracle Linux with the Oracle Unbreakable Enterprise Kernel.

For more information, please go to Oracle Linux  web page or  follow us at : 

Twitter   Facebook YouTube Newsletter

Wednesday Dec 08, 2010

Oracle Linux Delivers Top CPU Benchmark Results on Sun Blades

From the Performance and Best Practices blog: Fresh SPEC CPU2006 results for Sun Blade X6275 M2 Server Modules running Oracle Linux 5.5.

The highlights:

  • The dual-node Sun Blade X6275 M2 server module, equipped with two Intel Xeon X5670 2.93 GHz processors per node and running the Oracle Enterprise Linux 5.5 operating system delivered the best SPECint_rate2006 and SPECfp_rate2006 benchmark results for all systems with Intel Xeon processor 5000 sequence.
  • With a SPECint_rate2006 benchmark result of 679, the Sun Blade X6275 M2 server module, with two compute nodes per blade, delivers maximum performance for space constrained environments.
  • Comparing Oracle's dual-node blade to HP's dual-node blade server, based on their single node performance, the Sun Blade X6275 M2 server module SPECfp_rate2006 score of 241 outperforms the best published HP ProLiant BL2X220c G5 server score by 3.2x.
  • A single node of a Sun Blade X6275 M2 server module using 2.93 GHz Intel Xeon X5670 processors delivered 37% improvement in SPECint_rate2006 benchmark results and 22% improvement in SPECfp_rate2006 benchmark results compared to the previous generation Sun Blade X6275 server module.
  • Both nodes of a Sun Blade X6275 M2 server module using 2.93 GHz Intel Xeon X5670 processors delivered 59% improvement on the SPECint_rate2006 benchmark and 40% improvement on the SPECfp_rate2006 benchmark compared to the previous generation Sun Blade X6275 server module.
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