Version 11.1.5.1, 2010-07-28
Abstract
These release notes apply to SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 for the x86_64 architecture.
This Novell product includes materials licensed to Novell under the GNU General Public License (GPL). The GPL requires that Novell make available certain source code that corresponds to those GPL-licensed materials. The source code is available for download at http://www.novell.com/linux/source. Also, for up to three years from Novell's distribution of the Novell product, Novell will mail a copy of the source code upon request. Requests should be sent by e-mail to sle_source_request@novell.com or as otherwise instructed at http://www.novell.com/linux/source. Novell may charge a fee to recover its reasonable costs of distribution.
SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 is an affordable, integrated suite of robust open source real-time technologies that enable enterprises to implement solutions with controlled response times.
SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 enables usage of SUSE Linux Enterprise Server 11 Service Pack 1 based technologies in environments where having control over latencies is a critical requirement.
Its open source license minimizes the risk of vendor lock-in, and its adherence to open standards encourages interoperability with industry standard tools and technologies.
In SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 a number of improvements have been added, some of which are called out explicitly here. For the full list of changes and bugfixes, please refer to the change logs of the RPM packages.
This section includes an overview of the major new features provided by SUSE Linux Enterprise Real Time Extension 11 Service Pack 1.
Kernel version has been updated to 2.6.33. This follows the latest development in the community-driven PREEMPT_RT project, as well as adds support for latest hardware.
NMI mitigation support has been enhanced and improved. This makes latencies controllable even in situations in which hardware/firmware-caused stalls are harming predictability of the overall system latencies.
OFED packages have been updated in order to provide most up-to-date fabric support.
SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 comes with sole support for the x86_64 architecture. x86_64 architecture allows operating system to use more than 4G of RAM natively without the latency penalties incured by PAE on 32bit systems.
AppArmor support in SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 has been discontinued.
ptpd (Precision Time protocol as defined by IEEE 1588 standard) support has been discontinued.
Direct upgrade from SUSE Linux Enterprise Real Time 10 Service Pack 3 is not supported. In order to upgrade, follow the following steps.
Remove SUSE Linux Enterprise Real Time 10 Service Pack 3 Add-On from SUSE Linux Enterprise Server 10 Service Pack 3.
Upgrade SUSE Linux Enterprise Server 10 Service Pack 3 to SUSE Linux Enterprise Server 11 Service Pack 1.
Install SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 Add-On.
If SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 Add-On is installed after installation of SUSE Linux Enterprise Server 11 Service Pack 1 is completed, the Real Time kernel is not set as the default one. Administrator needs to set the Real Time kernel as default in bootloader configuration manually. This issue is not present if SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 Add-On is installed during SUSE Linux Enterprise Server 11 Service Pack 1 installation.
Setting the default kernel in boot loader proposal during SUSE Linux Enterprise Server 11 Service Pack 1 installation with SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 Add-On has no effect. The Real Time kernel will be always selected as the default one.
Novell Customer Center Configuration YaST module may display SUSE Linux Enterprise Real Time Extension 11 Service Pack 1 as not registered when it is run again after the registration has been completed. This does not have any effect on the registration.
Support requires an appropriate subscription from Novell; for more information, please see: http://www.novell.com/products/server/services_support.html.
General Support Statement
The following definitions apply:
L1: Installation and problem determination - technical support designed to provide compatibility information, installation and configuration assistance, usage support, on-going maintenance and basic troubleshooting. Level 1 Support is not intended to correct product defect errors.
L2: Reproduction of problem isolation - technical support designed to duplicate customer problems, isolate problem areas and potential issues, and provide resolution for problems not resolved by Level 1 Support.
L3: Code Debugging and problem resolution - technical support designed to resolve complex problems by engaging engineering in patch provision, resolution of product defects which have been identified by Level 2 Support.
Novell will only support the usage of original (unchanged or not recompiled) packages.
Visit http://www.novell.com/linux/ for the latest Linux product news from SUSE/Novell and http://www.novell.com/linux/source/ for additional information on the source code of SUSE Linux Enterprise products.
Thanks for using SUSE Linux Enterprise Server in your business.
The SUSE Linux Enterprise 11 Team