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Shakeride

Performance · Difficulty 4 of 5 · 45 min

Disk writes time out under load

Wait times on disk spiked on a production instance and application writes time out, while storage throughput sits well below normal. An alarm on a different metric is firing. Find the storage bottleneck and restore normal performance.

Where the symptom shows: EC2

How a ride works

Take this challenge on a live account

A live AWS account, already broken, and a clock. You fix it with the provider's own console and command line, then read a report of how you worked. We host the cloud account. Nothing lands on your bill.