From: bugzilla-daemon@bugzilla.kernel.org
To: cpufreq@vger.kernel.org
Subject: [Bug 64261] New: Intel Pstate driver truncates to pstate instead of rounding to nearest pstate
Date: Sat, 02 Nov 2013 21:52:12 +0000 [thread overview]
Message-ID: <bug-64261-12968@https.bugzilla.kernel.org/> (raw)
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@vger.kernel.org
Reporter: dsmythies@telus.net
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.
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next reply other threads:[~2013-11-02 21:52 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-02 21:52 bugzilla-daemon [this message]
2013-11-04 7:17 ` [Bug 64261] Intel Pstate driver truncates to pstate instead of rounding to nearest pstate bugzilla-daemon
2013-11-04 16:14 ` bugzilla-daemon
2013-11-04 16:54 ` bugzilla-daemon
2013-11-04 18:39 ` bugzilla-daemon
2013-11-04 22:19 ` bugzilla-daemon
2013-11-05 1:28 ` bugzilla-daemon
2013-11-05 7:21 ` bugzilla-daemon
2013-11-05 7:35 ` bugzilla-daemon
2013-11-05 8:12 ` bugzilla-daemon
2013-11-05 15:06 ` bugzilla-daemon
2013-11-06 5:34 ` bugzilla-daemon
2013-11-06 5:38 ` bugzilla-daemon
2013-11-06 5:43 ` bugzilla-daemon
2013-11-06 5:48 ` bugzilla-daemon
2013-11-06 6:04 ` bugzilla-daemon
2013-11-06 18:58 ` bugzilla-daemon
2013-11-06 19:44 ` bugzilla-daemon
2014-04-18 3:02 ` bugzilla-daemon
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