Red Hat Enterprise Linux Server 6 (2xDVD) | 6.32 GB
Red Hat has officially announced the release of the distribution Red Hat Enterprise Linux 6 (RHEL6), whose support will continue until 2020.
Major changes:
* Distribution based on the core 06/02/1932;
* Includes a new distribution for a given task scheduler CFS (Complete Fair Scheduler);
* Implemented a comprehensive virtualization support KVM on 64-bit architecture (AMD64 and Intel 64), also abolished the support RHEL6 as a host Xen;
* Ext4 is used as a file system by default;
* Improved management snmp;
* Sold hot add peripherals PCIe bus and memory;
* Set of packages brought to the actual level (postgresql 8.4.4, apache 2.2.15, mysql 5.1.47, perl 5.10.1, python 2.6.5, php 5.3.2);
* Improved support for energy-saving technologies.
Additional Information:
Comprehensive support for energy-saving technologies.
Innovations in the field of time-sharing processes in the core Linux (tickless kernel) have allowed more frequent transfer processor core in a state with low power consumption. This in turn led to what the processor is less heated, and decreases energy costs. New tools, such as powertop, designed to help assess the problem areas in the waste of energy and then help to further reduce it. For example, the office of “tuned” allows you to adjust power consumption according to the nature of the system load.
Improvements in performance.
Red Hat’s engineers have played a key role in developing opportunities to improve the performance of the mainline kernel and most of them appeared in Red Hat Enterprise Linux 6. Primarily, this includes a new scheduler CFS (Complete Fair Scheduler), which is “fairly” divide CPU cycles, and provides certainty that the problem with high priority will not be affected by the implementation of tasks with low priority. In addition, it produced a large number of improved synchronization locks when operating in a multiprocessor system. These improvements include, for example, elimination of unnecessary block in the nucleus, the replacement of many spin lock’ov to sleep lock’i and implementation of more efficient locking primitives. These profound changes have affected a significant number of kernel subsystems. According to the representatives of the Red Hat network system performance has been increased twice, and the file system in a multiuser environment by 2-5 times;
Improvements in scalability.
Recent launches of new SMP processors from Intel and AMD have led to a significant increase in computing platforms, the mass level. For example, one can now have 64 processors and 2TB of RAM in the platform that fit only in Form Factor 5U. Such systems and systems that will follow them, have almost run into the limits of Red Hat Enterprise Linux 5. Home opportunity Red Hat Enterprise Linux 6 is to provide support for scalability, with the possibility of development of systems in the future. Opportunities RHEL6 include support for a large number of processors and large amounts of RAM, as well as support the work of system configurations with a large number of tires and related peripherals. Such opportunities are suitable for use directly on the hardware (bare metal) and in a virtualized environment, because the latter was no less widespread.
New features in security.
New Service System Security Services Daemon (SSSD) is engaged in providing centralized management of user accounts. It also has the option of caching the authorization for use outside the network (aka offline mode). SELinux now provides the ability to run untrusted software in a sandbox so that the system was intact. This includes the possibility of a work of isolated virtualized guest environments in Red Hat Enterprise Linux 6.
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