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Red Hat Product Errata RHBA-2013:0367 - Bug Fix Advisory
Issued:
2013-02-20
Updated:
2013-02-20

RHBA-2013:0367 - Bug Fix Advisory

  • Overview
  • Updated Packages

Synopsis

irqbalance bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

Updated irqbalance packages that fix multiple bugs and add various enhancements
are now available for Red Hat Enterprise Linux 6.

Description

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

The irqbalance packages have been upgraded to upstream version 1.0.4, which
provides a number of bug fixes and enhancements over the previous version. Among
other changes, the irqbalance daemon has been enhanced to support multiple MSI-X
interrupts for PCI devices, which significantly boosts speed of devices
producing high-rate interrupts, such as network cards. Also, the irqbalance
logic has been modified to consider PCI bus topology when making IRQ mapping
decisions. (BZ#789946)

This update also fixes the following bugs:

  • The irqbalance(1) man page did not contain documentation for the

IRQBALANCE_BANNED_CPUS environment variable. This update adds the extensive
documentation to this man page. (BZ#813078)

  • 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 that use NIC
biosdevnames did not have their hardware interrupts distributed and pinned as
expected. With this update, the device classification mechanism has been
improved, which ensures a better interrupts distribution. (BZ#843379)

  • Previously, the irqbalance init script started the irqbalance daemon with the

"--foreground" option, which caused irqbalance to become unresponsive. With this
update, the "--foreground" option has been removed from the init script and
irqbalance now starts as expected. (BZ#860627)

All users of irqbalance are advised to upgrade to these updated packages, which
fix these bugs and add these enhancements.

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/knowledge/articles/11258

Affected Products

  • Red Hat Enterprise Linux Server 6 x86_64
  • Red Hat Enterprise Linux Server 6 i386
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
  • Red Hat Enterprise Linux Workstation 6 x86_64
  • Red Hat Enterprise Linux Workstation 6 i386
  • Red Hat Enterprise Linux Desktop 6 x86_64
  • Red Hat Enterprise Linux Desktop 6 i386
  • Red Hat Enterprise Linux for Power, big endian 6 ppc64
  • Red Hat Enterprise Linux for Scientific Computing 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 x86_64
  • Red Hat Enterprise Linux Server from RHUI 6 i386

Fixes

  • BZ - 813078 - Document use of IRQBALANCE_BANNED_INTERRUPTS and give examples for it and for IRQBALANCE_BANNED_CPUS
  • BZ - 860627 - irqbalance is not being daemonize

CVEs

(none)

References

(none)

Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
x86_64
irqbalance-1.0.4-3.el6.x86_64.rpm SHA-256: d81ecd4fafe1bc78976934d9e958d75f9001e6e9f2d3ae0e78b5949f514f4345
irqbalance-debuginfo-1.0.4-3.el6.x86_64.rpm SHA-256: 777373ce2510db3547996456726d7acd587286bafe63e48f7dcee901ef337bf7
i386
irqbalance-1.0.4-3.el6.i686.rpm SHA-256: 2ceacf9ec2d13fa307f6335e270dfe81a28a00ee048488f00e72c50014479ee5
irqbalance-debuginfo-1.0.4-3.el6.i686.rpm SHA-256: 1415b6aafe1e006364629dc6d0051dd2c7033c14d1a1d81903267db4fedfbc39

Red Hat Enterprise Linux Server - Extended Life Cycle Support 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
x86_64
irqbalance-1.0.4-3.el6.x86_64.rpm SHA-256: d81ecd4fafe1bc78976934d9e958d75f9001e6e9f2d3ae0e78b5949f514f4345
irqbalance-debuginfo-1.0.4-3.el6.x86_64.rpm SHA-256: 777373ce2510db3547996456726d7acd587286bafe63e48f7dcee901ef337bf7
i386
irqbalance-1.0.4-3.el6.i686.rpm SHA-256: 2ceacf9ec2d13fa307f6335e270dfe81a28a00ee048488f00e72c50014479ee5
irqbalance-debuginfo-1.0.4-3.el6.i686.rpm SHA-256: 1415b6aafe1e006364629dc6d0051dd2c7033c14d1a1d81903267db4fedfbc39

Red Hat Enterprise Linux Workstation 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
x86_64
irqbalance-1.0.4-3.el6.x86_64.rpm SHA-256: d81ecd4fafe1bc78976934d9e958d75f9001e6e9f2d3ae0e78b5949f514f4345
irqbalance-debuginfo-1.0.4-3.el6.x86_64.rpm SHA-256: 777373ce2510db3547996456726d7acd587286bafe63e48f7dcee901ef337bf7
i386
irqbalance-1.0.4-3.el6.i686.rpm SHA-256: 2ceacf9ec2d13fa307f6335e270dfe81a28a00ee048488f00e72c50014479ee5
irqbalance-debuginfo-1.0.4-3.el6.i686.rpm SHA-256: 1415b6aafe1e006364629dc6d0051dd2c7033c14d1a1d81903267db4fedfbc39

Red Hat Enterprise Linux Desktop 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
x86_64
irqbalance-1.0.4-3.el6.x86_64.rpm SHA-256: d81ecd4fafe1bc78976934d9e958d75f9001e6e9f2d3ae0e78b5949f514f4345
irqbalance-debuginfo-1.0.4-3.el6.x86_64.rpm SHA-256: 777373ce2510db3547996456726d7acd587286bafe63e48f7dcee901ef337bf7
i386
irqbalance-1.0.4-3.el6.i686.rpm SHA-256: 2ceacf9ec2d13fa307f6335e270dfe81a28a00ee048488f00e72c50014479ee5
irqbalance-debuginfo-1.0.4-3.el6.i686.rpm SHA-256: 1415b6aafe1e006364629dc6d0051dd2c7033c14d1a1d81903267db4fedfbc39

Red Hat Enterprise Linux for Power, big endian 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
ppc64
irqbalance-1.0.4-3.el6.ppc64.rpm SHA-256: 972194aeceafb154e89a201bf632c6db51d330b0762046e85e77374b67b65d08
irqbalance-debuginfo-1.0.4-3.el6.ppc64.rpm SHA-256: 60ace9a8e679639700bbf72bc642770826f7df2888b51e2a656df8c6c39e8c53

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
x86_64
irqbalance-1.0.4-3.el6.x86_64.rpm SHA-256: d81ecd4fafe1bc78976934d9e958d75f9001e6e9f2d3ae0e78b5949f514f4345
irqbalance-debuginfo-1.0.4-3.el6.x86_64.rpm SHA-256: 777373ce2510db3547996456726d7acd587286bafe63e48f7dcee901ef337bf7

Red Hat Enterprise Linux Server from RHUI 6

SRPM
irqbalance-1.0.4-3.el6.src.rpm SHA-256: a35d2af58131196126e0443bb99b04faed9db8a352773ef792eff9491511c667
x86_64
irqbalance-1.0.4-3.el6.x86_64.rpm SHA-256: d81ecd4fafe1bc78976934d9e958d75f9001e6e9f2d3ae0e78b5949f514f4345
irqbalance-debuginfo-1.0.4-3.el6.x86_64.rpm SHA-256: 777373ce2510db3547996456726d7acd587286bafe63e48f7dcee901ef337bf7
i386
irqbalance-1.0.4-3.el6.i686.rpm SHA-256: 2ceacf9ec2d13fa307f6335e270dfe81a28a00ee048488f00e72c50014479ee5
irqbalance-debuginfo-1.0.4-3.el6.i686.rpm SHA-256: 1415b6aafe1e006364629dc6d0051dd2c7033c14d1a1d81903267db4fedfbc39

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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