mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
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

  reply	other threads:[~2009-09-11 22:17 UTC|newest]

Thread overview: 18+ 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 23:35 ` [PATCH 2/9] PM: Asynchronous resume of devices Rafael J. Wysocki
2009-09-09 23:36 ` [PATCH 3/9] PM: Asynchronous suspend " 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 23:37 ` [PATCH 5/9] PM: Allow ACPI " Rafael J. Wysocki
2009-09-09 23:38 ` [PATCH 6/9] PM: Add a switch for disabling/enabling asynchronous suspend/resume Rafael J. Wysocki
2009-09-10 10:26   ` Pavel Machek
2009-09-10 18:56     ` Rafael J. Wysocki
2009-09-10 18:59       ` Pavel Machek
2009-09-10 20:15         ` Rafael J. Wysocki
2009-09-09 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 23:40 ` [PATCH 8/9] PM: Add facility for advanced testing of async suspend/resume Rafael J. Wysocki
2009-09-09 23:40 ` [PATCH 9/9] PM: Measure suspend and resume times for individual devices Rafael J. Wysocki
2009-09-10 18:37 ` [PATCH 0/9] PM: Asynchronous suspend of devices Pavel Machek
2009-09-10 18:43   ` Rafael J. Wysocki

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=200909120018.23375.rjw@sisk.pl \
    --to=rjw@sisk.pl \
    --cc=bgamari.foss@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®