[ltp] Re: T41: swsusp vs. swsusp2

[Shannon McMackin]

Shannon McMackin wrote:
> honey wrote:
> 
>>On Fri, 11 Nov 2005, Shannon McMackin wrote:
>>
>>
>>>In checking back, I was successful in getting suspend2 to run on a
>>>vanilla 2.6.14.1 kernel in Ubuntu Breezy.  I will say that based on the
>>>recommendations in the Ubunut forum, it's very slow.  Worse than
>>>standard suspend in most distros.
>>>
>>>Something on the order of ~2min to suspend and maybe ~3-4min to resume.
>>>Cold boots are better than that.
>>>
>>>I will keep fiddling because I don't think all the hibernate settings
>>>recommended make sense.
>>>
>>>Shannon
>>
>>
>>Yes, definitely something wrong there, Shannon - hard to say exactly
>>what.  My T40 (1GB ram) suspends to disk in approximately (a guess)
>>10-15 seconds and the same plus the time for it to get to grub to
>>resume (plus a few seconds for graphics to reset itself).
>>
>>Suspend2 did have a relatively rare issue about 2-3 months ago where
>>suspend times suddenly got very slow - something to do with disk access
>>mode or something - but it was fairly quickly cleared up I think.  Are
>>these Ubuntu users using the 2.2-rc series of suspend2?  I'm yet to try
>>it on my Ubuntu partition.
>>
>>Well worth checking the logs after resume - they will give a reading of
>>the Mb/s the suspend/resume read/write took. /var/log/hibernate.log from
>>memory.
>>
>>But I can confirm 2-4 minutes to suspend/resume with suspend2 isn't
>>expected or acceptable, and the developers would want to resolve that!
>>Nor would I use it at that speed.  Those Ubuntu forum users should pop
>>into #suspend2 on freenode.
>>
>>Honey
> 
> Looking at my /var/log/hibernate.log, the entire suspend/resume process
> took 4min 17sec.  Sounds like it should be more in the 2min range.
> 
> Time to dig...
> 
> Shannon
> 
My guess would have to be the generic IDE drivers.  I added the Intel
driver which covered my chipset even though I had to dig to verify.  My
suspend time is 24sec and resume is 49sec.  I'd have to say that feels
like success.

Shannon