View CPU threads and cores for an Amazon EC2 instance
You can view the CPU options for an existing instance in the Amazon EC2 console or by describing
the instance using the AWS CLI.
- Console
-
To view the CPU options for an instance using the console
Open the Amazon EC2 console at
https://console.aws.amazon.com/ec2/.
In the left navigation pane, choose Instances and
select the instance.
On the Details tab, under Host and placement group,
find Number of vCPUs.
- AWS CLI
-
To view the CPU options for an instance (AWS CLI)
Use the describe-instances
command.
aws ec2 describe-instances --instance-ids i-123456789abcde123
...
"Instances": [
{
"Monitoring": {
"State": "disabled"
},
"PublicDnsName": "ec2-198-51-100-5.eu-central-1.compute.amazonaws.com",
"State": {
"Code": 16,
"Name": "running"
},
"EbsOptimized": false,
"LaunchTime": "2018-05-08T13:40:33.000Z",
"PublicIpAddress": "198.51.100.5",
"PrivateIpAddress": "172.31.2.206",
"ProductCodes": [],
"VpcId": "vpc-1a2b3c4d",
"CpuOptions": {
"CoreCount": 34,
"ThreadsPerCore": 1
},
"StateTransitionReason": "",
...
}
]
...
In the output that's returned, the CoreCount
field indicates the
number of cores for the instance. The ThreadsPerCore
field
indicates the number of threads per core.
Alternatively, to view CPU information, you can connect to your instance and use
one of the following system tools:
You can use AWS Config to record, assess, audit, and evaluate configuration changes for instances, including terminated instances. For more information, see Getting Started with AWS Config in the AWS Config Developer Guide.