Shulou(Shulou.com)05/31 Report--

Red Hat RHEL 6 Beta version of the important improvements, I believe that many inexperienced people do not know what to do, so this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

Looking ahead, Red Hat RHEL 6 blurs the line between virtual, physical, and cloud computing to adapt to the changes taking place in contemporary IT environments. Red Hat RHEL 6 adopts upgraded core technology from kernel to application infrastructure to development tool chain, which can meet the needs of future generations of hardware and software technology.

The theme of the new version includes ubiquitous virtualization, better stability and high availability, higher energy efficiency, and the provision of multiple software technologies. As the Beta version is released, several new and noteworthy improvements will be introduced:

Comprehensive power management capability

Timely kernel improvements make it possible for the system to idle processors with no active tasks more frequently. This will result in cooler CPU and higher power savings than previous versions. New monitoring tools such as Powertop can help identify energy consumption problems that can be solved, thereby further reducing energy consumption. New tuning tools such as "tuned" (an adaptive system tuning daemon) enable the system to adjust energy consumption based on the analysis of service usage patterns.

Performance improvement

Red Hat engineers play a key role in the upstream development of various kernel performance improvements we plan to appear in Red Hat RHEL 6, completely rewriting the process scheduler so that it can distribute computing time more fairly among processors by allowing higher priority processes to deal with interference at a lower priority. In addition, a variety of multiprocessor lock synchronization improvements have been made. For example, eliminate unnecessary locking events, replace many spin locks with sleep locks, and adopt more efficient locking primitives. These fundamental changes affect many kernel subsystems.

Scalability improvement

The new hardware has led to a major development of the commodity computing platform. For example, a 5U rack cabinet can now hold 64 CPU and 2TB memory. These systems and their successor products will reach the scalability limit of Red Hat Enterprise Linux 5. One of the main features of Red Hat RHEL 6 is that it provides scalability for future systems. Its scalability ability ranges from the support for optimization of a large number of CPU and memory configurations to the ability to handle a larger number of system interconnection buses and peripherals. These capabilities are suitable for bare metal and virtualized environments at a time when virtualization becomes as ubiquitous as bare metal deployment.

New security features

A new service called the system Security Services daemon (SSSD) provides centralized identity management. It also has the ability to cache certificates for offline use. The new SELinux sandbox feature allows untrusted content to be executed in an isolated environment that does not affect the rest of the system. This includes the ability to isolate any virtual clients running on Red Hat RHEL 6.

Resource management

With the help of a new framework called Control Group (cgroups), the new system provides fine-grained control, allocation, and management of hardware resources. Cgroups runs at the process group level and can be used to manage resources from CPU, memory, network, and hard drives for applications. The framework is also used to manage virtual clients.

Virtualization

Red Hat RHEL 6 extends the integrated KVM-based virtualization technology provided by earlier Red Hat Enterprise Linux versions. The new system has multiple improvements in performance, scheduler, and hardware support, providing better flexibility and control regardless of the deployment model.

Storage

Through the support of FCoE and iSCSI protocols for network block storage, it is possible to use LVM/DM to change the size of mirrored and multipath volumes online.

File system

The new version includes the ext4 file system. As the next generation of extended file system families, it includes support for larger file sizes, more efficient hard disk space allocation, better file system checking, and more robust logging. In addition to ext4, we also intend to provide the XFS file system. XFS is suitable for very large files and directories, including the ability to defragment and resize a file system as it is used. NFS has been upgraded to version 4 to include support for IPv6.

Reliability, availability and serviceability (RAS)

The new version leverages new hardware capabilities to provide features such as hot-add devices and hardware, as well as enhanced error checking for PCIe devices through AER. It will also include advanced data integrity features (DIF/DIX). Such features are checked and validated by hardware from the application. The introduction of ABRT (automatic defect reporting tool) provides a more consistent way to identify and report system anomalies, such as kernel failures (kernel oops) and user-space application crashes.

Compilers and tools

The GCC compiler has been upgraded to version 4.4. This version is compiled in accordance with C++ 0x draft standard. It also complies with OpenMP 3.0 and includes many debugging features. SystemTap improvements include better support for user space exploration, a more secure script compilation server, and a new unprivileged mode that allows non-root users to access SystemTap. In addition, the new compiler has many other libraries that have been upgraded to the latest version and more languages and runtime environments, including the full LAMP stack and OpenJDK.

Desktop

The new version introduces detection of display types and support for multiple displays. We have also added new drivers that support upgrades for NVIDIA graphics devices. Of course, the new version will not be complete without updates to the GNOME and KDE desktops.

Various technologies in Red Hat RHEL 6 will be provided with extended support for key hardware platforms, and we believe that these technologies will make the new version of the platform an attractive choice to attract new and existing customers. As always, part of the value of the new version lies in our corporate certification.

After reading the above, have you mastered any important improvements to the Red Hat RHEL 6 Beta version? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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