This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- hirsute' to 'verification-done-hirsute'. If the problem still exists, change the tag 'verification-needed-hirsute' to 'verification-failed- hirsute'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-hirsute -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu. https://bugs.launchpad.net/bugs/1939024 Title: linux-azure Enable CONFIG_RT_GROUP_SCHED Status in linux-azure package in Ubuntu: In Progress Status in linux-azure source package in Focal: Fix Committed Status in linux-azure source package in Hirsute: Fix Committed Status in linux-azure source package in Impish: In Progress Bug description: SRU Justification [Impact] Microsoft has requested that CONFIG_RT_GROUP_SCHED be enabled. This option has no discernible runtime impact in the default case. As quoted from research performed by Colin King, "I ran some synthetic stress-ng throughput and latency tests with and without CONFIG_RT_GROUP_SCHED on CONFIG_RT_GROUP_SCHED. I don't see enough variation in the throughput or latency to warrant any concern about enabling this option. We have quite a bit of small jitter on the results, but overall the kernel results are similar enough to make me feel OK to enable this option for Focal." [Test Case] Microsoft has tested this option using kernels at https://kernel.ubuntu.com/~rtg/azure-rt-group-sched-sf00314473/. The customer requesting this config option verified that it satisfied their requirements. Microsft also determined that there were no performance regressions for the default case, i.e., when no RT priority threads were created. [Where things could go awry] Adding options to the scheduler could impact work loads that we have yet to observe. [Other Info] SF: 00314473 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1939024/+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
