Tool Hub - Developer Utility Tools

Calculators

ECS EC2 Calculator

Calculate optimal EC2 instances for your ECS containers

Configuration

Container CPU Limit (vCPU)

Container Memory Limit (MB)

Memory Oversubscription Ratio

1.0 = no oversubscription, 1.2 = 20% more containers

Total Containers Needed

Availability Zones

Use custom instance specifications

EC2 Instance Type

Require container siblings in different AZs

Results

Total Instances

Instances per AZ

95.2%

Container Utilization

98.0%

Memory Utilization

Instance Capacity

Containers per instance:7

Limiting factor:CPU

Instance vCPU:2

Instance Memory:4.0GB

Memory Analysis

Oversubscription ratio:1.2x

Containers by CPU:7

Containers by memory (soft):8

Containers by memory (hard):6

Memory oversubscribed - monitor usage!

Container Distribution

Requested containers:10

With siblings:20

Total capacity:21

Spare capacity:1

High Availability

Availability zones:3

Instances per AZ:1

Sibling containers:Enabled

Good container utilization (95.2%). This configuration efficiently uses your instances.

High memory oversubscription (98.0% with 1.2x ratio). Monitor container memory usage closely to avoid OOM kills.

Sibling containers enabled. Each container will have a replica in a different AZ for high availability.