From: venkatesh.pallipadi@intel.com
To: cpufreq@www.linux.org.uk
Cc: davej@redhat.com
Subject: [patch 0/6] cpufreq: Use idle micro-accounting information in ondemand governor
Date: Thu, 17 Jul 2008 13:55:54 -0700 [thread overview]
Message-ID: <20080717205554.214645000@intel.com> (raw)
Currently, ondemand governor uses jiffy based idle statistics which is
very coarse grained. As a result, ondemand uses a big gaurd band around
CPU utilization while calculating the next freq.
This patchset lets ondemand use idle microaccounting when available
(when tickless feature is present) and switches to a smaller gaurd band.
This lets us do more aggressive power savings in partial idle workloads.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
--
next reply other threads:[~2008-07-17 20:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 20:55 venkatesh.pallipadi [this message]
2008-07-17 20:55 ` [patch 1/6] cpufreq: Add cpu number parameter to __cpufreq_driver_getavg() venkatesh.pallipadi
2008-07-17 20:55 ` [patch 2/6] cpufreq: Change load calculation in ondemand for software coordination venkatesh.pallipadi
2008-07-17 20:55 ` [patch 3/6] cpufreq: get_cpu_idle_time() changes in ondemand to suit idle-microaccounting venkatesh.pallipadi
2008-07-17 20:55 ` [patch 4/6] cpufreq_ondemand: Parameterize down differential venkatesh.pallipadi
2008-07-17 20:55 ` [patch 5/6] cpufreq: Changes to get_cpu_idle_time_us(), to be used in ondemand governor venkatesh.pallipadi
2008-07-17 20:56 ` [patch 6/6] cpufreq: Add idle microaccounting " venkatesh.pallipadi
2008-07-30 16:56 ` [patch 0/6] cpufreq: Use idle micro-accounting information " Dave Jones
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