** Description changed: Description: Workload slows down for default sampling cycles in KNL. There are some processing in perf that's single threaded and bottlenecked when number of cores really go up. A second issue is that things slow down when we issue perf record – workload vs perf record -a – workload Patch is submitted for review https://www.spinics.net/lists/kernel/msg2552460.html https://www.spinics.net/lists/kernel/msg2552461.html https://www.spinics.net/lists/kernel/msg2552462.html https://www.spinics.net/lists/kernel/msg2552463.html - Target kernel: TBD + Target kernel: 5.2 Target Release: 19.04
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1730782 Title: [Bug] [KNL] ~5x slowdown of application when attaching by perf on KNL To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1730782/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
