[Bugme-new] [Bug 19672] New: ondemand is slow

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Sun Oct 3 14:08:58 PDT 2010


https://bugzilla.kernel.org/show_bug.cgi?id=19672

           Summary: ondemand is slow
           Product: Power Management
           Version: 2.5
    Kernel Version: 2.6.35
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: cpufreq
        AssignedTo: cpufreq at vger.kernel.org
        ReportedBy: danielhollocher at gmail.com
        Regression: No


I find ondemand is allot slower than conservative for cpu bound tasks.  My
understanding is that performance wise, ondemand should be on par or slightly
faster than conservative.

My chip is an intel core 2 duo, I think 4300.  I am using 2.6.35 from Ubuntu.

On the kraken benchmark, ondemand completes in   34216.6ms +/- 2.3%   where as
conservative completes in   25699.3ms +/- 5.6%


Again, it is my understanding that ondemand should not have this much of a
slowdown.

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