Re: Raspberry Pi 2 scroll speed

2016-01-06 Thread Jean-Marc Lasgouttes

Le 06/01/2016 16:54, Peter Kümmel a écrit :

Is this 2.1 or 2.2? In release mode?



The one shipped by Ubuntu, so I assume some 2.1 version.


Then hopefully the performance with 2.2 will be better.

JMarc



Re: Raspberry Pi 2 scroll speed

2016-01-06 Thread Peter Kümmel



Am 06.01.2016 um 14:45 schrieb Jean-Marc Lasgouttes:

Le 06/01/2016 13:25, Peter Kümmel a écrit :



Am 05.01.2016 um 12:28 schrieb Jean-Marc Lasgouttes:

Le 20/12/2015 15:07, Peter Kümmel a écrit :

Recently I gave away the computer which I've used when I
was
very busy on LyX. It was an Athlon XP 2GHz singlecore.

I was interested how the hardware progress looks like from
the LyX perspective, means the time needed to scroll
to the end of the reference manual:


How do you scroll?


With the page-down key.


With the same repeat rate? Note that by default page down
events will be skipped when they repeat faster than painting
is done. Therefore comparison is not very easy.



Athlon XP 2GHz: 19s (< full HD)
Haswell 4Ghz  :  8s (full HD window)
Haswell 4Ghz  :  3s (4k fullscreen)


How come that the second one is faster than the first?


I assume you mean on the Haswell system. The line width
is twice on 4k, so less pages, and it seems the pagelayout
is the expensive part.


And if you try to dimension windows so that the text width
is the same?


Ah yes, didn't had idea do use a 

Is this 2.1 or 2.2? In release mode?



The one shipped by Ubuntu, so I assume some 2.1 version.


JMarc



Re: Raspberry Pi 2 scroll speed

2016-01-06 Thread Jean-Marc Lasgouttes

Le 06/01/2016 13:25, Peter Kümmel a écrit :



Am 05.01.2016 um 12:28 schrieb Jean-Marc Lasgouttes:

Le 20/12/2015 15:07, Peter Kümmel a écrit :

Recently I gave away the computer which I've used when I was
very busy on LyX. It was an Athlon XP 2GHz singlecore.

I was interested how the hardware progress looks like from
the LyX perspective, means the time needed to scroll
to the end of the reference manual:


How do you scroll?


With the page-down key.


With the same repeat rate? Note that by default page down events will be 
skipped when they repeat faster than painting is done. Therefore 
comparison is not very easy.




Athlon XP 2GHz: 19s (< full HD)
Haswell 4Ghz  :  8s (full HD window)
Haswell 4Ghz  :  3s (4k fullscreen)


How come that the second one is faster than the first?


I assume you mean on the Haswell system. The line width
is twice on 4k, so less pages, and it seems the pagelayout
is the expensive part.


And if you try to dimension windows so that the text width is the same?

Is this 2.1 or 2.2? In release mode?

JMarc


Re: Raspberry Pi 2 scroll speed

2016-01-06 Thread Peter Kümmel



Am 05.01.2016 um 12:28 schrieb Jean-Marc Lasgouttes:

Le 20/12/2015 15:07, Peter Kümmel a écrit :

Recently I gave away the computer which I've used when I was
very busy on LyX. It was an Athlon XP 2GHz singlecore.

I was interested how the hardware progress looks like from
the LyX perspective, means the time needed to scroll
to the end of the reference manual:


How do you scroll?


With the page-down key.





Athlon XP 2GHz: 19s (< full HD)
Haswell 4Ghz  :  8s (full HD window)
Haswell 4Ghz  :  3s (4k fullscreen)


How come that the second one is faster than the first?


I assume you mean on the Haswell system. The line width
is twice on 4k, so less pages, and it seems the pagelayout
is the expensive part.




Raspberry Pi 2: 34s (Ubuntu Mate, full HD)

Especially I was in interested in the Raspberry Pi 2 numbers,
and it looks like the Rasp could at least be used for editing
lyx files.


I suspect that this number could be improved with a bit of
profiling...

JMarc



Re: Raspberry Pi 2 scroll speed

2016-01-05 Thread Jean-Marc Lasgouttes

Le 20/12/2015 15:07, Peter Kümmel a écrit :

Recently I gave away the computer which I've used when I was
very busy on LyX. It was an Athlon XP 2GHz singlecore.

I was interested how the hardware progress looks like from
the LyX perspective, means the time needed to scroll
to the end of the reference manual:


How do you scroll?



Athlon XP 2GHz: 19s (< full HD)
Haswell 4Ghz  :  8s (full HD window)
Haswell 4Ghz  :  3s (4k fullscreen)


How come that the second one is faster than the first?


Raspberry Pi 2: 34s (Ubuntu Mate, full HD)

Especially I was in interested in the Raspberry Pi 2 numbers,
and it looks like the Rasp could at least be used for editing
lyx files.


I suspect that this number could be improved with a bit of profiling...

JMarc


Raspberry Pi 2 scroll speed

2015-12-20 Thread Peter Kümmel

Recently I gave away the computer which I've used when I was
very busy on LyX. It was an Athlon XP 2GHz singlecore.

I was interested how the hardware progress looks like from
the LyX perspective, means the time needed to scroll
to the end of the reference manual:

Athlon XP 2GHz: 19s (< full HD)
Haswell 4Ghz  :  8s (full HD window)
Haswell 4Ghz  :  3s (4k fullscreen)
Raspberry Pi 2: 34s (Ubuntu Mate, full HD)

Especially I was in interested in the Raspberry Pi 2 numbers,
and it looks like the Rasp could at least be used for editing
lyx files.

Peter