Fine-tune Linux kernel configurations to maximize speedup

[hai-rise]

This is critical. For instance, a new Linux kernel scheduler (from 6.6) brought the mainnet speedup from 2x to 1.6x on my machine...

• https://discourse.ubuntu.com/t/24-04-considerably-slower-than-20-04-or-22-04-for-some-high-system-percentage-usage-cases/41987
• https://discourse.ubuntu.com/t/fine-tuning-the-ubuntu-24-04-kernel-for-low-latency-throughput-and-power-efficiency/44834

Aptos/Block-STM may be facing the same issue:

• https://github.com/danielxiangzl/Block-STM/commit/18dba40d2c723d75f12e2629c822d4179445d4fa
• https://github.com/aptos-labs/aptos-core/blob/46364e9e8352b1cd074d9dade20128332d2d0d1e/buildtools/packer/aws-ubuntu.pkr.hcl#L42