Hi Thomas,
A kernel bug report was opened against Ubuntu [0]. After a kernel
bisect, it was found that reverting the following commit resolved this bug:
commit 1f12e32f4cd5243ae46d8b933181be0d022c6793
Author: Thomas Gleixner <t...@linutronix.de>
Date: Mon Feb 22 22:19:15 2016 +0000
x86/topology: Create logical package id
To build successfully with this commit reverted, I also had to revert
commits: e7ee3e8,2d4de83,87f01cc and 33c3cc7.
The regression was introduced as of v4.6-rc1.
I was hoping to get your feedback, since you are the patch author. Do
you think gathering any additional data will help diagnose this issue,
or would it be best to submit a revert request?
Thanks,
Joe
[0] http://pad.lv/1573231
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https://bugs.launchpad.net/bugs/1397880
Title:
[Feature] Memory Bandwidth Monitoring
Status in intel:
New
Status in linux package in Ubuntu:
Fix Released
Status in xen package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Status in xen source package in Xenial:
Fix Released
Bug description:
Memory Bandwidth Monitoring (MBM) is a CPU feature included in the family of
Platform QoS features. It is used to track memory bandwidth usage for a
specific task, or group of tasks.
Memory Bandwidth Monitoring is an extension of the existing Cache QoS
Monitoring (CQM) feature found in Haswell server. The mechanism used is the
same, where tasks are associated with an Resource Monitoring ID (RMID), which
the CPU uses to track the bandwidth usage.
Upstream status:
Kernel - 4.6
Xen - target 4.6
To manage notifications about this bug go to:
https://bugs.launchpad.net/intel/+bug/1397880/+subscriptions
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