Re: speed of qt terminal

[Tatsuro M. <tma...@ya...>]

----- Original Message -----

> ----- Original Message -----
> 
>>  From: Tatsuro MATSUOKA 
>>  To: tmacchant3 Daniel J Sebald 
>>  Cc: gnuplot-beta> Date: 2015/6/27, Sat 13:13
>>  Subject: Re: speed of qt terminal
>> 
>>  ----- Original Message -----
> 
> <snip>
> 
>>  Ubuntu 14.04 (LTS) amd64, Qt 4.8.5, nvidia-304
>> 
>>  Qt QT_GRAPHICSSYSTEM non-specified a litte bit slow
>>  QT_GRAPHICSSYSTEM=raster normal almost the same as X11
>>  QT_GRAPHICSSYSTEM=opengl does not work
>> 
>>  X11 normal
>>  wxt rather faster than qt and x11
>> 
>>  Perhaps speed of qt on this test depends strongly environments.
>> 
>>  Tatsuro
> 
> 
> I have rebuilt gnuplot-5.1 with qt5 (qt5.2.1) on Ubuntu 14.04 amd64. 
> QT_GRAPHICSSYSTEM has no mean on qt5
> 
> Test
> splot 'blutux.rgb' binary array=(128,128) flipy format='%uchar' 
> using 1:2:3 with rgbimage 
> 
> I cannot test quantitatively. 
> To be honest qualitatively I cannot feel distinguishable differences 
> on mouse operation of a plot between three terminals (qt, wxt, and x11).
> 
> Perhaps this is due to my PC is rather old. 
> (The nvidia driver version is 304.)
> 
For make check, qt is the fastest.

time GNUTERM=qt make check
real    0m22.559s
user    0m8.834s
sys    0m0.883s

time GNUTERM=wxt make check
real    0m34.771s
user    0m23.197s
sys    0m1.901s

time GNUTERM=x11 make check
real    0m30.643s
user    0m8.574s
sys    0m1.582s

Tatsuro