[ltp] Re: T41: swsusp vs. swsusp2

[Shannon McMackin]

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