Performance vs other crates?

[TheButlah]

A basic performance comparison would be great to compare against other rust ringbuffers, as well as crossbeam channel.

[mgeier]

See also mgeier/rtrb#39.

[agerasev]

Hi, thank you for being interested in this crate!

Honestly speaking, the performance wasn't the main goal of the crate and I haven't focused on it heavily. I created that crate just to have at least some implementation of ring buffer being light-weight and with direct access to underlying memory. And I'm glad to see that now there is a variety of a ring buffer implementations to choose from.

About your question - @mgeier made a nice comparison and according to it rtrb seems to be a better option.

It's interesting to find out where 3x performance difference come from. Maybe in near future I will find some time to investigate this and to apply some optimizations.

[mgeier]

It's interesting to find out where 3x performance difference come from.

I guess a part of it comes from false sharing of the head and tail indices as suggested in #7.

#7 (comment) mentions another potential optimization by trying to read the atomic indices less often.