by December 3, 2013 0 comments

CentOS as a group is a community of open source contributors and users. Typical CentOS users are organisations and individuals that do not need strong commercial support in order to achieve successful operation. CentOS is 100% compatible rebuild of the Red Hat Enterprise Linux, in full compliance with Red Hat’s redistribution requirements. 

Major Changes:

-The Precision Time Protocol – previously a technology preview – is now fully    supported. The following drivers support network time stamping: bnx2x, tg3, e1000e, igb, ixgbe, and sfc.
-OpenSSL has been updated to version 1.0.1.
-OpenSSL and NSS now support TLS 1.1 and 1.2.
-KVM received various enhancements. These include improved read-only         support of VMDK- and VHDX-Files, CPU hot plugging and updated virt-v2v-/virt-p2v-conversion tools.
-Hyper-V and VMware drivers have been updated.
-Updates to Evolution (2.32) and Libre Office (4.0.4)

CentOS 6 uses the ext4 filesystem by default, and allows the kernel to be booted from an ext4 partition – an operation 5.6 doesn’t support. The ext4 filesystem improves large file performance (compared to ext3), keeps disk fragmentation in check, and supports 16TB filesystems

CentOS drops Xen for virtualization and uses only the KVM hypervisor, which is now fully integrated into the kernel. Other virtualization improvements include the ability to assign CPU affinity for guests, and Kernel Same Page (KSM) technology, which allows the kernel to reuse identical memory pages across virtual machines.


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