Back to bug 1388528

Who When What Removed Added
Beth Uptagrafft 2016-10-25 15:10:51 UTC Status NEW ASSIGNED
Assignee virt-maint williams
QA Contact virt-bugs jkastner
Beth Uptagrafft 2016-10-25 15:13:24 UTC Summary KVM-RT: halting and starting guests cause latency spikes KVM-RT: halting and starting guests cause latency spikes [rhel-rt-7.3.z]
John Shortt 2016-10-25 20:18:27 UTC CC jshortt
John Shortt 2016-10-27 18:56:04 UTC Blocks 1353018
Beth Uptagrafft 2016-11-02 20:14:16 UTC Status ASSIGNED MODIFIED
errata-xmlrpc 2016-11-03 14:28:21 UTC Status MODIFIED ON_QA
Jiri Kastner 2016-11-04 08:01:02 UTC QA Contact jkastner virt-bugs
juzhang 2016-11-04 08:03:59 UTC CC chayang
QA Contact virt-bugs pezhang
Pei Zhang 2016-11-15 10:10:19 UTC Flags needinfo?(williams)
Luiz Capitulino 2016-11-15 14:46:24 UTC Flags needinfo?(williams)
Clark Williams 2016-11-15 16:27:36 UTC Doc Text Cause: synchronized_rcu_expedited() is a call used upstream to increase the priority of rcu synchronize operations

Consequence: Calling this may hold off realtime operations and cause latency spikes

Fix: make the call to synchronize_rcu_expedited conditional on not being in an RT kernel

Result: No latency spikes caused by the rcu expedited call
Doc Type If docs needed, set a value Bug Fix
Pei Zhang 2016-11-17 10:51:04 UTC Status ON_QA VERIFIED
errata-xmlrpc 2016-12-06 00:28:38 UTC Status VERIFIED RELEASE_PENDING
errata-xmlrpc 2016-12-06 17:10:29 UTC Status RELEASE_PENDING CLOSED
Resolution --- ERRATA
Last Closed 2016-12-06 12:10:29 UTC

Back to bug 1388528