From: "Rafael J. Wysocki" <rjw@sisk.pl>
To: Ben Gamari <bgamari.foss@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 7/9] PM: Measure device suspend and resume times
Date: Sat, 12 Sep 2009 00:18:23 +0200 [thread overview]
Message-ID: <200909120018.23375.rjw@sisk.pl> (raw)
In-Reply-To: <20090911174831.GA11467@ben-laptop>
On Friday 11 September 2009, Ben Gamari wrote:
> On Thu, Sep 10, 2009 at 01:39:21AM +0200, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rjw@sisk.pl>
> >
> > Measure and print the time of suspending and resuming all devices.
> >
> > Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
>
> Do you have any rough numbers describing actual suspend/resume times
> before and after this patch set? Of what order of magnitude is the
> improvement on standard x86 hardware? Just curious.
Depending on the system on which it's run, it gives up to 15% speedup,
but please note that only PCI and ACPI devices are now allowed to
suspend/resume asynchronously, while on my test systems the most significant
stalls are from USB, serio devices and (SATA) drives which are still
suspended/resumed synchronously.
Thanks,
Rafael
next prev parent reply other threads:[~2009-09-11 22:17 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-09 23:27 [PATCH 0/9] PM: Asynchronous suspend of devices Rafael J. Wysocki
2009-09-09 23:32 ` [PATCH 1/9] PM: Introduce PM links framework Rafael J. Wysocki
2009-09-09 23:32 ` Rafael J. Wysocki
2010-01-30 5:11 ` Mahalingam, Nithish
2009-09-09 23:35 ` [PATCH 2/9] PM: Asynchronous resume of devices Rafael J. Wysocki
2009-09-09 23:35 ` Rafael J. Wysocki
2009-09-09 23:36 ` [PATCH 3/9] PM: Asynchronous suspend " Rafael J. Wysocki
2009-09-09 23:36 ` Rafael J. Wysocki
2009-09-09 23:36 ` [PATCH 4/9] PM: Allow PCI devices to suspend/resume asynchronously Rafael J. Wysocki
2009-09-09 23:36 ` Rafael J. Wysocki
2009-09-09 23:37 ` [PATCH 5/9] PM: Allow ACPI " Rafael J. Wysocki
2009-09-09 23:37 ` Rafael J. Wysocki
2009-09-09 23:38 ` [PATCH 6/9] PM: Add a switch for disabling/enabling asynchronous suspend/resume Rafael J. Wysocki
2009-09-09 23:38 ` Rafael J. Wysocki
2009-09-10 10:26 ` Pavel Machek
2009-09-10 10:26 ` Pavel Machek
2009-09-10 18:56 ` Rafael J. Wysocki
2009-09-10 18:56 ` Rafael J. Wysocki
2009-09-10 18:59 ` Pavel Machek
2009-09-10 20:15 ` Rafael J. Wysocki
2009-09-10 20:15 ` Rafael J. Wysocki
2009-09-10 18:59 ` Pavel Machek
2009-09-09 23:39 ` [PATCH 7/9] PM: Measure device suspend and resume times Rafael J. Wysocki
2009-09-11 17:48 ` Ben Gamari
2009-09-11 22:18 ` Rafael J. Wysocki [this message]
2009-09-09 23:39 ` Rafael J. Wysocki
2009-09-09 23:40 ` [PATCH 8/9] PM: Add facility for advanced testing of async suspend/resume Rafael J. Wysocki
2009-09-09 23:40 ` Rafael J. Wysocki
2009-09-09 23:40 ` [PATCH 9/9] PM: Measure suspend and resume times for individual devices Rafael J. Wysocki
2009-09-09 23:40 ` Rafael J. Wysocki
2009-09-10 18:37 ` [PATCH 0/9] PM: Asynchronous suspend of devices Pavel Machek
2009-09-10 18:43 ` Rafael J. Wysocki
2009-09-10 18:43 ` Rafael J. Wysocki
2009-09-10 18:37 ` Pavel Machek
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