[Bug 64261] New: Intel Pstate driver truncates to pstate instead of rounding to nearest pstate

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



https://bugzilla.kernel.org/show_bug.cgi?id=64261

            Bug ID: 64261
           Summary: Intel Pstate driver truncates to pstate instead of
                    rounding to nearest pstate
           Product: Power Management
           Version: 2.5
    Kernel Version: 3.12rc7
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
          Assignee: cpufreq@xxxxxxxxxxxxxxx
          Reporter: dsmythies@xxxxxxxxx
        Regression: No

Created attachment 113151
  --> https://bugzilla.kernel.org/attachment.cgi?id=113151&action=edit
shows rounded pstate and current actual for frequency Vs. requested.

The Intel Pstate driver seems to truncate its calculations to the lower integer
pstate. The suggestion is that it should round to the nearest pstate. Recent
(kernel 3.12RC7) math improvements have made achieving 100% frequency better,
but rounding would make it more robust.

The attachment demonstrates.

-- 
You are receiving this mail because:
You are the assignee for the bug.
--
To unsubscribe from this list: send the line "unsubscribe cpufreq" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Kernel Devel]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Forum]     [Linux SCSI]

  Powered by Linux