Crate Addition Request - Token bucket based rate limiter

[acatangiu]

Crate Name

io-rate-limiter

Short Description

A token bucket based rate limiter to enable inline rate limiting of device IO.
As an example see Firecracker implementation [1].

Why is this crate relevant to the rust-vmm project?

VMMs can make use of this crate to implement IO rate limiting for their emulated devices.

[1] https://github.com/firecracker-microvm/firecracker/tree/main/src/rate_limiter

[rbradford]

👍 We use this in CH. CC @likebreath

[acatangiu]

Actually, I've updated the proposed name rate-limiter -> io-rate-limiter since we target a simple IO-specific implementation limiting on bandwidth and iops, and not a generic rate-limiter crate.

[acatangiu]

I have an initial design proposal (very similar to what Firecracker and Cloud-Hypervisor currently use): https://github.com/acatangiu/ratelimit-asyncio#readme

@andreeaflorescu can you help with a new repository so we can have the design discussion on a issue there?