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doc: benchmark: move alacritty-unicode-random text from footnote to separate chapter

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Daniel Eklöf 2020-06-09 20:58:45 +02:00
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@ -81,17 +81,24 @@ Scrollback=10000 lines
| scrolling-filled-lines | 1.888s ±0.021 | 2.334s ±0.078 | 2.145s ±0.074 | 3.372s ±0.078 | 2.144s ±0.091 | | scrolling-filled-lines | 1.888s ±0.021 | 2.334s ±0.078 | 2.145s ±0.074 | 3.372s ±0.078 | 2.144s ±0.091 |
| unicode-random | 1.545s ±0.229 | 0.164s ±0.012 [^1] | 11.180s ±0.342 | crashed | 11.389s ±0.269 | | unicode-random | 1.545s ±0.229 | 0.164s ±0.012 [^1] | 11.180s ±0.342 | crashed | 11.389s ±0.269 |
[^1]: [Alacritty and "unicode-random"](#alacritty-and-unicode-random)
[^1]: Alacritty is actually **really** slow at rendering this (whether
it is fallback fonts in general, emojis, or something else, I # Alacritty and "unicode-random"
don't know). I believe the reason it finishes the benchmark so
quickly is because it reads from the PTY in a separate thread, Alacritty is actually **really** slow at rendering this (whether it is
into a larger receive buffer which is then consumed by the main fallback fonts in general, emojis, or something else, I don't know).
thread. This allows the client program to write its output much
faster since it is no longer stalling on a blocked PTY. This means I believe the reason it finishes the benchmark so quickly is because
Alacritty only needs to render a couple of frames since it can it reads from the PTY in a separate thread, into a larger receive
reach the final VT state almost immediately. On the other hand, buffer which is then consumed by the main thread. This allows the
`cat`:ing the `unicode-random` test file in an endless loop, or client program to write its output much faster since it is no longer
just manually scrolling up after the benchmark is done is stalling on a blocked PTY.
**slow**, which besides being felt (input lag), can be seen by
setting `debug.render_timer = true` in `alacritty.yml`. This means Alacritty only needs to render a couple of frames since it
can reach the final VT state almost immediately.
On the other hand, `cat`:ing the `unicode-random` test file in an
endless loop, or just manually scrolling up after the benchmark is
done is **slow**, which besides being felt (input lag), can be seen by
setting `debug.render_timer = true` in `alacritty.yml`.