Optimizing eBPF I/O latency accounting when running 37M IOPS, on 384 CPUs | Tanel Poder Consulting

[giscus[bot]]

Optimizing eBPF I/O latency accounting when running 37M IOPS, on 384 CPUs | Tanel Poder Consulting

In this post I will introduce a much more efficient method for accounting block I/O latencies with eBPF on Linux. In my stress test, the “new biolatency” accounting method had 59x lower CPU and probe latency overhead compared to the current biolatency approach.
So I couldn’t help it and ended up putting 21 NVMe SSDs into one of my homelab servers. 8 of them are PCIe5 and the remaining 13 are PCIe4. - Linux, Oracle, SQL performance tuning and troubleshooting - consulting & training.

https://tanelpoder.com/posts/optimizing-ebpf-biolatency-accounting/

[mathewbutler]

Really interesting work here. 😀

Hope you are well.

Mat.