brian-armstrong-discord

Setup: Intel Haswell, Debian. Both tests ran against the same image libraries (libjpeg-turbo etc).
Both ran on a single thread only. Save qualities were 85 for JPEG and WEBP, compress level 7 for PNG.
Both tests ran many iterations and then averaged results.
Benchmarking code can be found at https://github.com/discordapp/lilliput-bench

Test types:
- Header reading: We don't actually know what's in a blob of image bytes when we get it. Reading the header allows us
   to decide if we want to resize the image.
- Resize, 256x256 => 32x32: We have lots of icon-sized assets that we need resized into various smaller formats.
   These make up a pretty sizable percentage of our resizes.

brian-armstrong-discord

lilliput
===============
JPEG 1920x1080 header read: 1920x1080, avg: 0.005083 ms, min: 0.004398 ms, max: 0.663941 ms
PNG 1920x1080 header read: 1920x1080, avg: 0.003636 ms, min: 0.003362 ms, max: 0.134671 ms
WEBP 1920x1080 header read: 1920x1080, avg: 0.002145 ms, min: 0.001795 ms, max: 1.949846 ms
GIF 1920x1080 header read: 1920x1080, avg: 0.003795 ms, min: 0.003521 ms, max: 0.140039 ms
JPEG 256x256 => 32x32: 1078 Bytes, avg: 0.62 ms, min: 0.58 ms, max: 1.07 ms
PNG 256x256 => 32x32: 1411 Bytes, avg: 0.92 ms, min: 0.88 ms, max: 1.43 ms
WEBP 256x256 => 32x32: 946 Bytes, avg: 3.19 ms, min: 2.87 ms, max: 4.57 ms
GIF 256x256 => 32x32: 18310 Bytes, avg: 27.96 ms, min: 27.31 ms, max: 39.77 ms