Solution:Step 1: Identify limits and usageMemory limit is 500m (hard), reservation is 300m (soft), usage is 400m.Step 2: Understand behavior when usage exceeds reservation but below limitContainer can exceed reservation without being killed; only limit kills.Final Answer:Container continues running

[Solved] Given the command:docker run --memory=500m --memory-reservation=300m myappWhat is the expected behavior if the container tries to use 400MB of memory? | Docker

Docker - Resource Management

Given the command:
docker run --memory=500m --memory-reservation=300m myapp
What is the expected behavior if the container tries to use 400MB of memory?

AContainer continues running normally as 400MB is below the hard limit.

BContainer is killed immediately for exceeding the reservation.

CDocker throttles CPU usage but allows memory use.

DContainer is paused until memory usage drops below 300MB.

Step-by-Step Solution

Solution:

Step 1: Identify limits and usage
Memory limit is 500m (hard), reservation is 300m (soft), usage is 400m.
Step 2: Understand behavior when usage exceeds reservation but below limit
Container can exceed reservation without being killed; only limit kills.
Final Answer:
Container continues running normally as 400MB is below the hard limit. -> Option A
Quick Check:
Usage > reservation but < limit = container runs [OK]

Quick Trick: Soft limit exceeded is allowed; hard limit kills [OK]

Common Mistakes:

Thinking container is killed at reservation
Confusing CPU throttling with memory limits
Assuming container pauses on memory excess

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More Docker Quizzes

Given the command:

Step 1: Identify limits and usage

Step 2: Understand behavior when usage exceeds reservation but below limit

Final Answer:

Quick Check:

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