Issued:
2012-06-20
Updated:
2012-06-20

RHBA-2012:0807 - irqbalance bug fix update

Synopsis

irqbalance bug fix update

Type/Severity

Bug Fix Advisory (none)

Topic

Updated irqbalance packages that fix one bug are now available for Red Hat Enterprise Linux 6.

Description

The irqbalance packages provide a daemon that evenly distributes interrupt requests (IRQ) load across multiple CPUs for enhanced performance.

This update fixes the following bug:

  • The irqbalance daemon assigns each interrupt source in the system to a "class", which represents the type of the device (for example Networking, Storage or Media). Previously, irqbalance used the IRQ handler names from the /proc/interrupts file to decide the source class, which caused irqbalance to not recognize network interrupts correctly. As a consequence, systems using biosdevname NIC naming did not have their hardware interrupts distributed and pinned as expected. With this update, the device classification mechanism has been improved, and so ensures a better interrupts distribution. (BZ#682211)

All users of irqbalance are advised to upgrade to these updated packages, which fix this bug.

Solution

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

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

  • irqbalance-debuginfo-0.55-34.el6.ppc64.rpm
  • irqbalance-0.55-34.el6.ppc64.rpm
  • irqbalance-0.55-34.el6.x86_64.rpm
  • irqbalance-debuginfo-0.55-34.el6.i686.rpm
  • irqbalance-debuginfo-0.55-34.el6.x86_64.rpm
  • irqbalance-0.55-34.el6.i686.rpm
  • irqbalance-0.55-34.el6.src.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information