AMD 4th Gen EPYC "Genoa" To Enjoy Slightly Better Performance With Linux 6.3

Written by Michael Larabel in Software on 10 January 2023. Page 3 of 4. 4 Comments
Timed Godot Game Engine Compilation: Time To Compile
Timed Linux Kernel Compilation: Build: allmodconfig
Timed LLVM Compilation: Build System: Ninja
Timed Node.js Compilation: Time To Compile

For workloads like compiling large software packages with multiple jobs, there wasn't any measurable performance difference for Retpolines vs. Automatic IBRS on the AMD EPYC 9654 2P server.

CockroachDB: Workload: MoVR - Concurrency: 1024

CockroachDB was only seeing some subtle performance differences when moving to the new kernel with Automatic IBRS for AMD Zen 4 processors.

PostgreSQL: Scaling Factor: 100 - Clients: 800 - Mode: Read Only
PostgreSQL: Scaling Factor: 100 - Clients: 800 - Mode: Read Only - Average Latency
PostgreSQL: Scaling Factor: 100 - Clients: 1000 - Mode: Read Only
PostgreSQL: Scaling Factor: 100 - Clients: 1000 - Mode: Read Only - Average Latency
PostgreSQL: Scaling Factor: 1000 - Clients: 1000 - Mode: Read Only
PostgreSQL: Scaling Factor: 1000 - Clients: 1000 - Mode: Read Only - Average Latency

There were more pronounced performance advantages with the PostgreSQL database server enjoying some nice performance improvements thanks to this Automatic IBRS feature on Zen 4.


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