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Hi there!
thank you for posting your concern here.
In this case there are many possible causes of this problem, can be a problem with an external service that your instance relies on, also disk thrashing and can be network connectivity issues, I suggest that maybe you check the EBS volume metrics since Amazon Elastic Block Store (Amazon EBS) sends data points to CloudWatch for several metrics. Amazon EBS General Purpose SSD (gp2), Throughput Optimized HDD (st1) , Cold HDD (sc1), and Magnetic (standard) volumes automatically send five-minute metrics to CloudWatch.
You can use this link also to do further trouble shooting https://aws.amazon.com/premiumsupport/knowledge-center/ec2-instance-slow-cpu-not-high/
I hope this will help.
Thank you
TL
answered 3 years ago
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