Inspired by recently published Phoronix article: https://www.phoronix.com/scan.php?page=article&item=linux-420-io&num=1, I’ve decided to run some benchmarks in our AS lab, I believe that initial results are interesting enough to share:
After setting IO scheduler for SSDPE2KX080T8 NVMe drives (from “none” to “bfq”, with low_latency option enabled), read ops/sec performance reported by asloglatency jumped from ~12200 op/s to ~15500 ops/s (kernel 4.15 no scheduler vs 4.20 BFQ scheduler).
I wonder if anyone on the forum tried it as well and can confirm improved performance?
I can share more details regarding our hardware/benchmark setup if anyone’s interested.
I haven’t run any ACT tests yet to verify my findings.