Re: [Lsf-pc] [LSF/MM/BPF TOPIC] Rust block layer abstractions and benchmark strategies

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 [off-list ref]
SUSE Labs, CR