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
