◆ canonical observability stack Apr 9, 2026 1 min read

COS Lite Machine Sizer

Use the sliders above to interactively adjust your log and metric ingestion rates and retention period, and get an estimate of the CPU, memory, and disk sizing you may need for your COS Lite deployment.

Based on this discourse post.

The Tool

Recommended CPU
6 vCPU
Raw: 4.85 vCPUs
Recommended memory
13 GB
Raw: 10.93 GB
Recommended daily disk
74 GB/day
Raw: 66.69 GB/day
Recommended total storage
2201 GB
Raw: 2000.70 GB

Formulas

The formulas used, courtesy of @sed-i, are the following:

disk = 3.011e-4 * L + 3.823e-6 * M + 1.023
cpu = 1.89 * atan(1.365e-4 * L) + 1.059e-7 * M + 1.644
mem = 2.063 * atan(2.539e-3 * L) + 1.464e-6 * M + 3.3

recommended = ceil(raw * 1.10)