Linux's Proposed Cache Aware Scheduling Benchmarks Show Big Potential On AMD EPYC Turin

Written by Michael Larabel in Software on 23 October 2025 at 01:00 PM EDT. Page 4 of 4. 39 Comments.

👁 ClickHouse benchmark with settings of 100M Rows Hits Dataset, Second Run. Cache Aware Scheduling was the fastest.

👁 Apache IoTDB benchmark with settings of Device Count: 500, Batch Size Per Write: 100, Sensor Count: 500, Client Number: 100. Cache Aware Scheduling was the fastest.

👁 Apache IoTDB benchmark with settings of Device Count: 800, Batch Size Per Write: 100, Sensor Count: 500, Client Number: 100. Cache Aware Scheduling was the fastest.

👁 Apache IoTDB benchmark with settings of Device Count: 800, Batch Size Per Write: 100, Sensor Count: 500, Client Number: 400. Cache Aware Scheduling was the fastest.

👁 Memcached benchmark with settings of Set To Get Ratio: 1:100. Cache Aware Scheduling was the fastest.

👁 PostgreSQL benchmark with settings of Scaling Factor: 100, Clients: 800, Mode: Read Only. Cache Aware Scheduling was the fastest.

👁 PostgreSQL benchmark with settings of Scaling Factor: 100, Clients: 800, Mode: Read Only, Average Latency. Linux v6.17 was the fastest.

👁 TensorFlow benchmark with settings of Device: CPU, Batch Size: 64, Model: ResNet-50. Cache Aware Scheduling was the fastest.

Again for the highly-threaded workloads able to saturate the CPU(s) fully the Cache Aware Scheduling won't be beneficial but for the rest there is some interesting possibilities with today's modern Intel and AMD processors.

👁 Apache Cassandra benchmark with settings of Test: Writes. Cache Aware Scheduling was the fastest.

👁 BRL-CAD benchmark with settings of VGR Performance Metric. Cache Aware Scheduling was the fastest.

Cache Aware Scheduling is looking good from my initial dabbling with it on the flagship 5th Gen AMD EPYC "Turin" processors. I will be testing more workloads as time and server/hardware availability in the lab allows when not busy running other benchmarks/article tests. More benchmarks and more processors but so far this Cache Aware Scheduling is looking great from these preliminary runs on AMD EPYC Turin. Hopefully we will see Cache Aware Scheduling make it to the mainline Linux kernel in 2026.

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Linux's Proposed Cache Aware Scheduling Benchmarks Show Big Potential On AMD EPYC Turin