April 22th, 2008
These release notes cover the following areas:
1.0 General: Information that everybody should read.
2.0 Update: Changes related to updating that are not mentioned in the Administration Guide.
3.0 Installation: Additional pertinent information for the installation.
4.0 Technical: These sections contains a number of technical changes, enhancements and known problems for the experienced user.
5.0 Feedback
6.0 Legal Notices
This release of SUSE Linux Enterprise Real Time ships as an extension to a base SUSE Linux Enterprise Server 10 SP2. Please refer to the SUSE Linux Enterprise Server 10 SP2 release notes for more information:
/usr/share/doc/release-notes/SUSE_Linux_Enterprise_10/RELEASE-NOTES.en.html.
Please refer to the README file on the CD for detailed instructions on YAST install procedures.
SUSE Linux Enterprise Real Time should run on Multiprocessor systems for maximum benefits.
Please see the README file on the CD for detailed information on installation steps.
To run application at real-time priority an unrestricted access to certain resources is needed (for example real-time priorities, cpu). Access to these resources is usually limited for regular processes. This can be changed by adding the user to the group realtime. This group has rights for unrestricted access to certain resources. If a user is in this group and starts an application, the application inherets these rights.
A number of scheduler improvements and fixes that increase performance as well as reduce latency for critical applications.
A new adaptive locking algorithm for kernel locks that significantly increases throughput for applications. As opposed to immediately releasing the CPU when waiting on a contended resource, the adaptive locking enhancement allows the task to wait in a preemptible manner for the resource to become available. This dramatically decreases the number of context switches on the system, increases throughput, and potentially decrease latency for certain applications.
The latest stable version of OFED 1.3 is included in this release. OFED 1.3 includes a number of new features and enhancements for Infiniban fabrics.
Inclusion of the Precision Time Protocol package (PTP) version 1. PTPd implements the Precision Time Protocol, defined by the IEEE 1588 standard. PTPd allows for precise time synchronization between nodes on a Ethernet based network.
The addition of the cset command which is an application to make using the cpusets facilities in the Linux kernel easier. The command allows manipulation of cpusets on the system and provides higher level functions such as implementation and control of a basic CPU shielding setup.
The Linux Real Time community cyclictest command. Cyclitest is a program designed to measure wakeup latency on Real Time Linux. You can use this command to help tune your system to optimum real time performance.
AMQP/qpid Qpid C++ implementation of the Advanced Messaged Queuing Protocol (AMQP) specification and related technologies including transaction management, queuing, distribution, security, management and heterogeneous multi-platform support for messaging. Qpid's overall goal is to create an open and interoperable implementation for messaging which implements the AMQP specification. Currently, we include the C++ broker, and the C++, python, ruby and mono clients at the M2 release point.
The following known problems exist on the following hardware :
In case of encountering a bug please report it through your support contact.
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