Static vs Native vs FFI?

[tomByrer]

I can guess what WASM is, but I don't understand what the other just* tests are?
TIA :)

[billywhizz]

hi tom! i'll be writing a blog post to discuss it in detail. there are 4 different tests for just-js

• native - running the script using the just program as normal
• static - a statically linked application with all dependencies bundled into it. this can be slightly faster than dynamically linked application in some situations and usually takes up less memory at runtime
• FFI - using libffi to dynamically import the system libsqlite3 library at run time - this is usually pretty slow as a lot of extra overhead but is something folks use when there is no other option. interestingly, it is still faster than out of the box deno and node libraries.
• WASM - this is just for comparison - i built SQLite using WASM and a custom VFS for another project and wanted to see how performance compared in a memory only test - interestingly, the deno library most commonly used is also based on WASM! very strange. 🤔

as i say, i'll put something up over next few days with more detail on the benchmark.

[tomByrer]

Nice; I'll hold off doing my blog post until yours is done.

BTW Blueboat is another new JS runtime. Closer to CloudFlare Workers, but OSS. Not sure if out-of-scope for your test?