Issued:
2014-10-13
Updated:
2014-10-13

RHBA-2014:1422 - cpupowerutils bug fix and enhancement update

Synopsis

cpupowerutils bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Topic

Updated cpupowerutils packages that fix several bugs and add one enhancement are now available for Red Hat Enterprise Linux 6.

Description

The cpupowerutils packages provide a suite of tools to manage power states on appropriately enabled central processing units (CPU).

This update fixes the following bugs:

  • Prior to this update, the turbostat utility did not correctly access the energy status register on certain Intel Core processors. As a consequence, turbostat displayed the following error message:

    /dev/cpu/0/msr offset 0x641 read failed

With this update, turbostat has been fixed to correctly access the proper energy status registers. As a result, turbostat now returns the expected data in the described scenario. (BZ#1056310, B#1080631)

  • Previously, on systems using the ACPI CPU frequency driver, the cpupower utility displayed the CPU frequencies rounded to two digits even though the frequencies values were of 3 digits. This behaviour could lead to various problems with scripts using this output. To fix this bug, the "--no-rounding" option has been added to cpupower and the output can now be reliably used by following scripts and applications. (BZ#1109187)

In addition, this update adds the following enhancement:

  • This update adds support for the Intel Broadwell Microarchitecture to the turbostat utility. (BZ#1093513)

Users of cpupowerutils are advised to upgrade to these updated packages, which fix these bugs and add this enhancement.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • cpupowerutils-devel-1.2-5.el6.ppc.rpm
  • cpupowerutils-1.2-5.el6.ppc64.rpm
  • cpupowerutils-1.2-5.el6.i686.rpm
  • cpupowerutils-debuginfo-1.2-5.el6.ppc64.rpm
  • cpupowerutils-debuginfo-1.2-5.el6.ppc.rpm
  • cpupowerutils-debuginfo-1.2-5.el6.i686.rpm
  • cpupowerutils-1.2-5.el6.ppc.rpm
  • cpupowerutils-devel-1.2-5.el6.i686.rpm
  • cpupowerutils-1.2-5.el6.x86_64.rpm
  • cpupowerutils-devel-1.2-5.el6.ppc64.rpm
  • cpupowerutils-debuginfo-1.2-5.el6.x86_64.rpm
  • cpupowerutils-devel-1.2-5.el6.x86_64.rpm
  • cpupowerutils-1.2-5.el6.src.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information