From: David Brownell <david-b@pacbell.net>
To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, "Rafael J. Wysocki" <rjw@sisk.pl>,
linux-acpi@vger.kernel.org, Len Brown <lenb@kernel.org>
Subject: Re: 2.6.25 regression: powertop says 120K wakeups/sec
Date: Fri, 28 Mar 2008 17:15:19 -0700 [thread overview]
Message-ID: <200803281715.19973.david-b@pacbell.net> (raw)
In-Reply-To: <924EFEDD5F540B4284297C4DC59F3DEEC83EF5@orsmsx423.amr.corp.intel.com>
On Friday 28 March 2008, Pallipadi, Venkatesh wrote:
> 100% C0 is not real reading. The problem behind that is there is no wat
> to measure exact C1 idle time with halt based C1s. So, we always used to
> report 0 time in acpi and that's what is reported by powertop.
> This should be fixed in future, as we now export approx time (even
> though not exact) in cpuidle and powertop is about to start using it.
I just pulled the latest powertop SVN and see it's smarter now.
It says over 90% in C1 (doing normal desktop stuff), with nasty
IRQ rates but that's the fault of silly desktop code. ;)
- Dave
prev parent reply other threads:[~2008-03-29 0:15 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20080322202454.9D69DCC0EF@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
2008-03-23 0:35 ` 2.6.25 regression: powertop says 120K wakeups/sec Andrew Morton
2008-03-23 18:04 ` Alexey Starikovskiy
2008-03-28 19:01 ` David Brownell
2008-03-28 19:13 ` Pallipadi, Venkatesh
2008-03-28 19:44 ` David Brownell
2008-03-28 20:30 ` Venki Pallipadi
2008-03-28 21:09 ` David Brownell
2008-03-28 21:55 ` Pallipadi, Venkatesh
2008-03-28 22:09 ` David Brownell
2008-03-28 22:56 ` Venki Pallipadi
2008-03-28 23:01 ` Rafael J. Wysocki
2008-03-28 23:07 ` Pallipadi, Venkatesh
2008-03-31 17:42 ` Mark Lord
2008-03-31 18:34 ` Pallipadi, Venkatesh
2008-03-28 23:36 ` David Brownell
2008-03-28 23:51 ` Pallipadi, Venkatesh
2008-03-29 0:15 ` David Brownell [this message]
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