Red Hat Bugzilla – Bug 494624
Add tuna interface to perf-counters in 2.6.29 RT kernel
Last modified: 2016-05-22 19:28:00 EDT
Description of problem:
New CPU cores have a builtin set of registers known as performance counters or perfcounters. The 2.6.29-rtX RT patch series contains snapshots of the -tip versions of code to manage access to perfcounters. Tuna should add code to display the contents of available perfcounters during a tuning session.
Support for using the perf events to notice the creation/destruction of threads has been commited upstream and should get into a MRG test package soon.
Tuna should use the perf infrastrucure to stop polling /proc and instead get perf events notifications for new threads.
*** This bug has been marked as a duplicate of bug 666958 ***