On Wed, 2006-05-10 at 16:25 +0200, Nagatoro wrote:
> Matthias Langer wrote:
> > On Wed, 2006-05-10 at 13:58 +0200, Matthias Langer wrote:
> >> On Wed, 2006-05-10 at 07:51 +0200, Nagatoro wrote:
> >> [snip]
> >>> Least:
> >>> ... Gnome-terminal, slow, and in my opinion horrible color support.
> >> [snip]
> >>
> >> Gnome terminal used to be slow, but vte (the underlying library) has
> >> beem optimized heavily during the last few month. I've a simple program
> >> that measures the speed of terminals. According to this program
> >> gnome-terminal is now __50__ times faster than it was 5 month ago.
> >>
> >> Matthias
> >
> > Well, here are some comparisons done with my test-prog (attached)
> > (higher is better):
> >
> > eterm: ~ 14 000 l/s
> > xterm: ~ 8 500 l/s
> > gnome-terminal: ~ 3 500 l/s
> > frame-buffer: ~ 40 l/s
>
> Om my (slow?) laptop I get:
>
> frame-buffer: 34 l/s
> rxvt-unicode: 12 000 l/s
> xterm: 4500 l/s
> Konsole: 6666 l/s
> gnome-terminal: 6666 l/s
> ^^^
> _not_ faked :)
>
Maybe this has something to do with your screen resolution; as you are
using a 'slow' laptop, i guess you are using 1024x768, while i use
1280x1024 in my athlon-xp 2400+.
PS: Did you pass any values to the prog ? It's because, it stopps after
it has written 20 000 lines if no arguments are passed. For very fast
terminals this is bad; Imagine a terminal that puts out 11 000 lines per
second. It will then take about 1.8 s to write 20 000 lines. However,
the program uses time(...) and therefore it will write:
20 000 l/s. The '6666' is not a big surprise, because 20 000 / 3 =
6666.7. Thus, if your terminal needs from 3s to 4s for 20000 lines, you
will always get this result if specifying no arguments. As i said before
this is just a quick hack to make some comparisons. However, here is a
slightly impoved version ...
#include <cmath>
#include <ctime>
#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
static string
rStr("AaBbCcEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz(){}[]?*+-/_-:.;, ");
int main(int argc, char **argv)
{
int lines;
if(argc == 1)
lines = 20000;
else if(argc == 2)
{
lines = atoi(argv[1]);
if(lines < 1000)
{
cerr << "Please enter at least '1000' for lines !" << endl;
return 1;
}
}
else
{
cerr << "Usage: tspeed <lines>" << endl;
return 2;
}
time_t t1 = time(NULL);
for(int i=0; i != lines; ++i)
{
cout << rStr << endl;
random_shuffle(rStr.begin(), rStr.end());
}
time_t t2 = time(NULL);
time_t elapsed = t2-t1;
if(elapsed == 0)
{
cerr << endl;
cerr << "Writing " << lines << " lines to the screen took less than one second." << endl;
cerr << "Please choose a bigger value for lines." << endl;
return 3;
}
double speed = double(lines)/double(elapsed);
if(elapsed < 6)
{
cout << endl;
cout << "Warning: writing " << lines << " lines took fewer than 6 seconds." << endl;
cout << "The the results may be inaccurate." << endl;
cout << "Try tspeed <value> with value > " << ceil(6*speed) << endl;
}
cout << endl;
cout << "terminal speed: " << floor(speed) << " l/s" << endl;
return 0;
}
