the patch of this bug is under review in upstream. Once update is official, we will provide patch commit id in this bug. This bug is for tracking. Thanks for your support.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1730782 Title: [Bug] [KNL] ~5x slowdown of application when attaching by perf on KNL Status in intel: Won't Fix Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 Release: 18.10 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1730782/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
