Output performance slow compared to gnome-terminal

[jbreitbart]

I have been playing around with terminus and noticed that cat is relatively slow for large files.

With terminus:

$ cat /var/log/vbox-install.log |wc -l
6516

$ time cat /var/log/vbox-install.log
...
real    0m12.963s
user    0m0.000s
sys     0m0.052s

With gnome-terminal

$ time cat /var/log/vbox-install.log
...
real	0m0.681s
user	0m0.000s
sys	0m0.032s

[pablomayobre]

Are you comparing a native C++ application with a hybrid app made with web technologies? Real question

[jbreitbart]

Yes, sure. Both serve the same purpose and whereas I did expect terminus to be slower, I did not expect a slowdown by a factor of ~18.

[pablomayobre]

Yeah, similarly to how Chrome is probably 100 times slower than a curl request...

Rendering is what is taking time

[OvermindDL1]

Rendering is what is taking time

What about rendering being done async so that actual printing to the screen runs at full speed to a buffer?

The speed that the terminal can receive the text (not necessarily display it, but 'receive' it) can often cause a difference in running speed of programs that flush output routinely.

[sylveon]

At least terminus is better than hyper. When running journalctl --no-pager, hyper will completely freeze for a while. Terminus will slowdown, but completely render the thing.

[stale]

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