Random tip for comparing the performance of Rust and C programs that use stdout:

Rust stdout is line-buffered, even when redirecting to a file.

Glibc (and most C libraries I know of) are smarter than this, and will switch to a more aggressive buffering scheme if they aren't writing to a terminal.

Running the program _under hyperfine_ is enough to trigger this behavior, because hyperfine takes over the stdout stream. Glibc senses that this is not a terminal and turns on a 4096-byte buffer; Rust continues making one syscall per line.

So if a Rust program that prints stuff seems to lose a performance advantage over a C counterpart when run under hyperfine, it's worth stracing to check.

(There's continuing talk of fixing this default in Rust, but it's not fixed yet.)

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Bluefin knows what's up. It's been a joy to collaborate with and fix issues for everyone!

docs.projectbluefin.io/blog/20…

So one thing I notice about #blind Internet culture: even back on Twitter, and now here in the #fediverse, blind people tend towards having discussions in giant threads, sometimes with as many as 10-12 people in them, that can often stretch on for days. I rarely (if ever) see sighted culture do this. I wonder why? It's not a criticism, it's just interesting to me. Maybe because Discord and other chat apps were historically less #accessible, so blind culture tends to use the fediverse more as a discussion platform? Or maybe it's something UI related that makes it easier for blind folks to track giant threads of doom? The few times I've been involved in this style of discussion with sighted folks, they've become confused and begged for everyone to move to Discord or Slack or somewhere. On the other hand, I rarely see blind people do a single, lengthy post broken up and threaded the way sighted people do, with (1/N) at the end. We tend to just move to instances with longer character limits, or put our long form thoughts on a webpage or something.

Edit to add: I'm pleased to say that this post has now become a perfect example of the thing I was talking about; my last post in the thread included the phrase "transsexual furry puppygirls". It makes me happy that people unfamiliar with what I'm talking about need do nothing more than look at the thread on this post.