Bug 3805

Summary:	[UPDATE REQUEST] [UPSTREAM UPDATE] irqbalance
Product:	Server Bugs	Reporter:	Andrew Lukoshko <andrew.lukoshko>
Component:	Main Packages	Assignee:	Andrew Lukoshko <andrew.lukoshko>
Status:	RESOLVED FIXED	QA Contact:	ROSA Server Bugs <server-bugs>
Severity:	normal
Priority:	Normal	CC:	v.potapov
Version:	unspecified	Flags:	v.potapov: qa_verified+ andrew.lukoshko: published_server+
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Platform:	---	ROSA Vulnerability identifier:
RPM Package:		ISO-related:
Bad POT generating:		Upstream:

Description Andrew Lukoshko 2014-02-25 16:31:03 MSK

* Previously, the irqbalance daemon did not consider the NUMA node assignment for an IRQ (interrupt request) for the banned CPU set. Consequently, irqbalance set the affinity incorrectly when the IRQBALANCE_BANNED_IRQS variable was set to a single CPU. In addition, IRQs could not be assigned to a node that had no eligible CPUs. Node assignment has been restricted to nodes that have eligible CPUs as defined by the unbanned_cpus bitmask, thus fixing the bug. As a result, irqbalance now sets affinity properly, and IRQs are assigned to the respective nodes correctly.

* Prior to this update, the dependency of the irqbalance daemon was set incorrectly referring to a wrong kernel version. As a consequence, irqbalance could not balance IRQs on NUMA systems. With this update, the dependency has been fixed, and IRQs are now balanced correctly on NUMA systems.

http://rhn.redhat.com/errata/RHBA-2014-0096.html

https://abf.rosalinux.ru/build_lists/1658374
https://abf.rosalinux.ru/build_lists/1658375

Comment 1 Vladimir Potapov 2014-02-26 17:58:47 MSK

irqbalance-1.0.4-8.res6
http://abf-downloads.rosalinux.ru/rosa-server65/container/1658374/
http://abf-downloads.rosalinux.ru/rosa-server65/container/1658375/
*************************** RHEL Advisory ***************************
* Previously, the irqbalance daemon did not consider the NUMA node assignment for an IRQ (interrupt request) for the banned CPU set. Consequently, irqbalance set the affinity incorrectly when the IRQBALANCE_BANNED_IRQS variable was set to a single CPU. In addition, IRQs could not be assigned to a node that had no eligible CPUs. Node assignment has been restricted to nodes that have eligible CPUs as defined by the unbanned_cpus bitmask, thus fixing the bug. As a result, irqbalance now sets affinity properly, and IRQs are assigned to the respective nodes correctly.

* Prior to this update, the dependency of the irqbalance daemon was set incorrectly referring to a wrong kernel version. As a consequence, irqbalance could not balance IRQs on NUMA systems. With this update, the dependency has been fixed, and IRQs are now balanced correctly on NUMA systems.
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QA Verified