Fastly Mirrors Throttled to 1 MB/sec?

Ryan Schmidt ryandesign at
Thu Jun 9 21:46:35 UTC 2022

On Jun 6, 2022, at 08:54, Christopher Nielsen wrote:
> Over the past few months, I’ve found that downloads from ‘’ and ‘’ are consistently throttled at 1 megabyte/second. And while that isn’t an issue for smaller payloads, it significantly impacts binary installation/update times for larger ports like Rust, the various LLVM ports, etc: The vast majority of time is spent waiting for the download to occur, with the installation occurring in a few seconds.
> Cancelling the download via Ctrl-C results in the next mirror being selected - which for me, is generally ‘’ - resulting in a fast non-throttled download.
> So the $100,000 question is: Are our Fastly-based mirrors intentionally throttled at 1 megabyte/second?
> If that’s intentional - particularly to reduce hosting costs - then no worries. But just figured I’d ask, in case that’s not supposed to be occurring.

Yes, it has always been that slow for me as well, which is part of the reason why I had not formally announced the fact that we are using this CDN. I need to ask them if there is some mistake in our configuration that is causing this.

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