Re: [GIT PULL] PM updates for 2.6.33

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sun, 6 Dec 2009 00:55:36 +0100
"Rafael J. Wysocki" <rjw@xxxxxxx> wrote:

> 
> Disk spinup/spindown takes time, but also some ACPI devices resume
> slowly, serio devices do that too and there are surprisingly many
> drivers that wait (using msleep() during suspend and resume).  Apart
> from this, every PCI device going from D0 to D3 during suspend and
> from D3 to D0 during resume requires us to sleep for 10 ms (the
> sleeping is done by the PCI core, so the drivers don't even realize
> its there).

maybe a good step is to make a scripts/bootgraph.pl equivalent for
suspend/resume (or make a debug mode that outputs in a compatible format
so that the script can be used as is.. I don't mind either way, and
consider this my offer to help with such a script as long as there's
sufficient logging in dmesg ;-)

that way we can SEE which ones are an issue.... and by how much.


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux IBM ACPI]     [Linux Power Management]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux