Question about boottime kubuntu 14.04 and 16.04

[O. Sinclair]

On 14/05/2016 17:02, bmarsh at bmarsh.com wrote:
> 
> 
>> On May 14, 2016, at 10:28 AM, anton <antonxx at gmx.de> wrote:
>>
>> Hi,
>>
>> I did the following test:
>> on my kubuntu 14.04 (64bit) I used Virtual Box 4.3.36 to
>> create two virtual machines:
>>
>> 1. One with Kubuntu 14.04 64 bit (fresh install without updates)
>> 2. One with Kubuntu 16.04 64 bit (fresh install without updates)
>>
>> Now I start the kubuntu 14.04 VM and habe the following timings +-2sec
>> because I look on my watch:
>>
>> 1. Time from start to appearance of login screen: 18 sec
>> 2. Time from login until appearance of desktop: 15 sec
>> After a second try I get:
>> 1. ... 21 sec
>> 2. ... 14 sec
>>
>> Now I do the same test with kubuntu 16.04:
>>
>> 1. Time from start to appearance of login screen: 24 sec
>> 2. Time from login until appearance of desktop: 23 sec
>> After a second try I get:
>> 1. ... 25 sec
>> 2. ... 20 sec
>>
>> So I get the foolowing sums:
>>
>> Kubuntu 14.04
>> 1. 33 s =  18 s + 15 s
>> 2. 35 s =  21 s + 14 s
>>
>> Kubuntu 16.04
>> 1. 47 s =  24 s + 23 s
>> 2. 45 s =  25 s + 20 s
>>
>>
>> OK, while these values are not soo precise there
>> is a clear trand that kubuntu 16.04 seems to be slower on bootup,
>> and on the login part.
>>
>> My questions:
>> - do you observe similar values on your machines?
>> - is the Virtual Box faking me?
>> - is the login part slower due to plasma5 (Kde5 = qt5?)
>>   or the use of QML? (I don't know what plasma 5 is really working)?
>>
> 
> 
> And my question is:   Why does it matter??   I might boot my machine once a month or so...   Even a minutes difference wouldn't make a hill-a-beans!
> 
> But I'm not sure your virtual runs are accurate...  I'm running 16.04 64bit and it seems a lot faster.
> 
> It has always boggled my mind why people are so concerned about "boot time".
> 
Not everyone can keep their computers on for ages. For me it is
powercuts, internet goes down on and off, KWin starts chewing RAM and so
on.

For me: have tried 16.04 around 4 times now. On 2 computers. Some or
other thing goes wrong on every install. One boot on new laptop wireless
is not on. On old laptop I get black screen.

Have also tried Manjaro. Same thing. There is something in the whole
Plasma 5 thing that is unstable.

For now I hang on to old KDE4