You can call this operation to query the Java virtual machine (JVM) settings of an application or an instance group.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request headers

This operation only uses common request headers. For more information, see the Common request parameters topic.

Request syntax

GET /pop/v5/app/app_jvm_config HTTPS|HTTP

Request parameters

Parameter Type Required Example Description
AppId String Yes 3616cdca-4f92-4***************

The ID of the application whose JVM settings you want to query.

GroupId String No 8123db90-880f-48**************

The ID of the instance group whose JMV settings you want to query.

If want to query the JVM settings of an instance group, set this parameter to a specific ID.

If want to query the JVM settings of an application, set this parameter to "".

Response parameters

Parameter Type Example Description
Code Integer 200

The returned code.

Message String success

The returned message.

RequestId String 3F43-F34V-0VCD***********
JvmConfiguration Struct

The returned JVM settings.

Options String -XX:+UseConcMarkSweepGC -XX:-UseParNewGC

The returned custom JVM parameters.

MinHeapSize Integer 500

The initial size of the heap allocated to the JVMs. Unit: MB

MaxPermSize Integer 1000

The maximum size of the permanent generation heap allocated to the JVMs. Unit: MB

MaxHeapSize Integer 1000

The maximum size of the heap allocated to the JVMs. Unit: MB

Examples

Sample requests

GET /pop/v5/app/app_jvm_config HTTP/1.1
Common request headers
{
  "AppId": ""
}

Sample success responses

JSON format

{
    "Message": "success",
    "JvmConfiguration": {
        "MaxHeapSize": 1000,
        "MinHeapSize": 500,
        "Options": " -XX:+UseConcMarkSweepGC -XX:-UseParNewGC"
    },
    "Code": 200
}

XML format

<Message>success</Message>
<JvmConfiguration>
    <MaxHeapSize>1000</MaxHeapSize>
    <MinHeapSize>500</MinHeapSize>
    <Options> -XX:+UseConcMarkSweepGC -XX:-UseParNewGC</Options>
</JvmConfiguration>
<Code>200</Code>

Error codes

For a list of error codes, visit the API Error Center.