Hi! On Tue 21-01-25 12:13:48, Andreas Hindborg via Lsf-pc wrote: > I would like to propose that we have a session on Rust in the block > layer again this year. Specifically I would like to discuss some rather > puzzling results I observe when I benchmark the C and Rust null block > drivers. I did a write up of the challenges I face at [1]. The > observations are not tied to rust, they also manifest in the C driver. The results are indeed somewhat curious. One factor I didn't see addressed in your blog is CPU scheduling. I've seen in the past cases where IO tasks were getting migrated across cores leading to jumps in perfomance. Did you try binding fio jobs to one CPU each? Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
