Issued:
2013-11-20
Updated:
2013-11-20

RHBA-2013:1705 - numad bug fix and enhancement update

Synopsis

numad bug fix and enhancement update

Type/Severity

Bug Fix Advisory (none)

Topic

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

Description

The numad packages provide a daemon for NUMA (Non-Uniform Memory Architecture) systems, monitors NUMA characteristics and manages placement of processes and memory to minimize memory latency. The packages also provide an interface that can be used to query the numad daemon for the best manual placement of an application.

This update fixes the following bugs:

  • When all CPUs were busy, the numad daemon was too reluctant to balance processes across nodes even though it would have resulted in significantly better application and system performance. With this update, numad is more aggressive about moving processes even when all CPUs are busy. As a result, overall system performance has improved significantly. (BZ#987563)

  • Previously, it was not possible to set the system's hugepage "scan_sleep_millisecs" parameter. As a consequence, NUMA performance was damaged when process memory was migrated across nodes. The underlying code has been changed to accept the new "-H" option to specify "scan_sleep_millisecs", thus fixing the bug. The user can now set the value to fine-tune the numad's performance. (BZ#987559)

This update also adds the following enhancement:

  • A configuration file for the logrotate tool has been added to be fully supported by Red Hat Enterprise Linux 6. (BZ#913546)

All users of numad 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/site/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

  • numad-debuginfo-0.5-9.20130814git.el6.x86_64.rpm
  • numad-debuginfo-0.5-9.20130814git.el6.ppc64.rpm
  • numad-0.5-9.20130814git.el6.ppc64.rpm
  • numad-0.5-9.20130814git.el6.src.rpm
  • numad-debuginfo-0.5-9.20130814git.el6.i686.rpm
  • numad-0.5-9.20130814git.el6.i686.rpm
  • numad-0.5-9.20130814git.el6.x86_64.rpm

Fixes

CVEs

(none)

References

(none)

Additional information