# JS API Changes of the DFX Subsystem

The table below lists the APIs changes of the DFX subsystem in OpenHarmony 3.2 Beta1 over OpenHarmony 3.1 Release.

## API Changes

| Module| Class| Method/Attribute/Enumeration/Constant| Change Type|
|---|---|---|---|
| ohos.hidebug | hidebug | getServiceDump(serviceid : number) : string; | Added|
| ohos.hidebug | hidebug | getCpuUsage() : number; | Added|
| ohos.hidebug | hidebug | getPrivateDirty() : bigint; | Added|