Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #78022 > unrolled thread

Bug#1029484: linux: Enable Intel Uncore frequency control driver

Back to article view | Back to linux.debian.kernel

Contents

  Bug#1029484: linux: Enable Intel Uncore frequency control driver Miguel Bernal Marin <miguel.bernal.marin@gmail.com> - 2023-01-23 07:20 +0100
    Bug#1029484: marked as done (linux: Enable Intel Uncore frequency  control driver) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2023-01-29 17:10 +0100

#78022 — Bug#1029484: linux: Enable Intel Uncore frequency control driver

Source: linux
Version: 6.1.7-1
Severity: wishlist
X-Debbugs-Cc: miguel.bernal.marin@linux.intel.com, jair.de.jesus.gonzalez.plascencia@intel.com

Dear Maintainer,

Please enable the Intel Uncore frequency control driver.
This driver allows control of uncore frequency limits on
supported server platforms.

# Intel Uncore frequency control driver

  CONFIG_INTEL_UNCORE_FREQ_CONTROL=m

  Some server users set limits on the uncore frequency using MSR 620H, while
  running latency sensitive workloads. This driver "the uncore frequency",
  controls RING/LLC (last-level cache) clocks.

  But MSR control is not always possible from the user space, so this driver
  provides a sysfs interface to set max and min frequency limits. This MSR
  620H is a die scoped in multi-die system or package scoped in non multi-die
  systems.

  When this driver is loaded, a new directory is created under
   /sys/devices/system/cpu.

  For example on a two package Skylake server:
  $ cd /sys/devices/system/cpu/intel_uncore_frequency

  $ ls
  package_00_die_00 package_01_die_00

  $ ls package_00_die_00
  max_freq_khz  min_freq_khz  initial_max_freq_khz
  initial_min_freq_khz

  $ grep . *
      max_freq_khz:2400000
      min_freq_khz:1200000
      initial_max_freq_khz:2400000
      initial_min_freq_khz:1200000

  Here, initial_max_freq_khz and initial_min_freq_khz are read only
  attributes to show power up or initial values of max and min frequencies
  respectively. Other attributes are read-write, so that users can modify.

A merge request was created at:

https://salsa.debian.org/kernel-team/linux/-/merge_requests/645

Thanks,
Miguel

[toc] | [next] | [standalone]

#78122 — Bug#1029484: marked as done (linux: Enable Intel Uncore frequency control driver)

[Multipart message — attachments visible in raw view] — view raw

Your message dated Sun, 29 Jan 2023 16:02:55 +0000
with message-id <E1pMA8t-008Bvw-20@fasolo.debian.org>
and subject line Bug#1029484: fixed in linux 6.1.8-1
has caused the Debian Bug report #1029484,
regarding linux: Enable Intel Uncore frequency control driver
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1029484: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1029484
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

[toc] | [prev] | [standalone]

Back to top | Article view | linux.debian.kernel

csiph-web