Red Hat APPLICATION STACK 1.2 RELEASE Manuale Utente Scaricare il pdf (Pagina 42)

Chapter 9. Package And Driver Changes

• net/tokenring/

• paride

• qla1280

• sound/core/oss

• sound/drivers/opl3/*

• sound/pci/nm256

Deprecated Drivers

• aacraid

• aic7xxx

• i2o

• ips

• megaraid_mbox

• mptlan

• mptfc

• sym53c8xx

Discontinued Kernel Components

• NBD - Network Block Device supplanted by iSCSI in Red Hat Enterprise Linux 6.

• HFS - Apple filesystem support discontinued in Red Hat Enterprise Linux 6.

• Tux - Web Server accelerator discontinued in Red Hat Enterprise Linux 6.

• Non-PAE x86 kernel - Previous versions of Red Hat Enterprise Linux contained multiple kernels for

the i686 architecture: a kernel with, and a kernel without PAE. It has been many years since non-

PAE hardware was sold in volume. Hence in Red Hat Enterprise Linux 6, there will only be a single

kernel, one that includes PAE.

• The Anticipatory I/O scheduler is deprecated and is not present in Red Hat Enterprise Linux 6. It

is replaced by the CFQ (Completely Fair Queueing) I/O scheduler, which has been the default I/

O scheduler in the Linux kernel since 2006. Customers using the Anticipatory I/O scheduler are

encouraged to test their workload using CFQ and file bugs for any performance issues observed.

While the goal is to make CFQ perform on par with the Anticipatory I/O scheduler in all tested

workloads, Red Hat cannot guarantee that there will be no outliers.

9.5. Library Changes

32-bit libraries are not installed by default on Red Hat Enterprise Linux 6. You can change this

behavior by setting multilib_policy=all in /etc/yum.conf, which will enable multilib policy as

a system-wide policy.

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Red Hat APPLICATION STACK 1.2 RELEASE Manuale Utente Pagina 42