[linux-pm] suspend slow in 2.6.25-rc6 (was Re: Suspend and hibernation patchset against -rc6)
Alexey Starikovskiy
astarikovskiy at suse.de
Tue Mar 18 16:45:12 PDT 2008
Pavel Machek wrote:
> On Tue 2008-03-18 10:31:28, Linus Torvalds wrote:
>>
>> On Tue, 18 Mar 2008, Pavel Machek wrote:
>>> On Tue 2008-03-18 14:06:42, Pavel Machek wrote:
>>>> Confirmed, suspend slowness is in 2.6.25-rc6, too. It takes 15 seconds
>>>> to suspend/resume, while 2.6.24 takes 9. Thinkpad x60.
>>> IIRC 2.6.25-rc5 was "fast".
>> Can you bisect it? There's only 343 commits between -rc5 and -rc6, so it
>> should not take too long to check which commit it is. Even if it should
>> take 9 reboots to bisect it entirely, going just five or six will likely
>> narrow it down sufficiently that we can probably guess fairly well what
>> it's about.
>
> Slowdown is fixed by this patch:
I think only this part is relevant here. But yes, I agree that the whole
patch should be reverted.
> @@ -230,7 +227,6 @@ static int acpi_ec_wait(struct acpi_ec *
> while (time_before(jiffies, delay)) {
> if (acpi_ec_check_status(ec, event))
> goto end;
> - msleep(5);
> }
> }
> pr_err(PREFIX "acpi_ec_wait timeout,"
Thanks,
Alex.
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