** Changed in: linux-azure (Ubuntu Focal)
Status: New => Fix Committed
** Changed in: linux-azure (Ubuntu Hirsute)
Status: New => Fix Committed
--
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
