jxl-rs Android performance build

Separate Chromium test app

The APK uses package com.januschka.jxlperf, so it can be installed next to Chrome. Android may ask you to allow installs from this browser. The build is locally signed and intended only for this performance test.

Version: JXL Perf a608c0b | checksum file
arm64: 494M | SHA-256: 7a432c90626123b788e0b9134bd669c81deac0030ab7bac284ba842a7ac45e99
x86: 316M | SHA-256: 4c2d0942c080ef3fa10824ff0187c2eed034e17f672517693f5b78ed7f8c4181

4096 x 4096 VarDCT image, 5 measured decodes

Open this page in the installed JXL Perf Chromium app. Close other apps, let the phone cool down, then run the test. One warm-up decode is excluded.

Ready. The benchmark image is 16.78 MP and 965 KiB compressed.

Use Chrome's built-in histogram page

The benchmark above measures end-to-end JavaScript-visible decode time. The APK also records only time spent inside jxl-rs, using the same timing as the existing VLOG.

1. Run the benchmark once.
2. Open a new tab in the JXL Perf Chromium app.
3. Type chrome://histograms/#Blink.Jxl.DecodeThroughput.
4. Screenshot Blink.Jxl.DecodeThroughput.Parallel and send it together with the copied benchmark results.

• Copied results from this page.
• Screenshot of the parallel throughput histogram.
• Phone model and whether battery saver was enabled.
• Preferably two runs after the phone has cooled down.