Hi,
Java file " DefaultEdgeServerManager.java"
line no. 107
EdgeVM vm = new EdgeVM(vmCounter, brokerId, mips, numOfCores, ram, bandwidth, storage, vmm, new CloudletSchedulerTimeShared());
//EdgeVM vm = new EdgeVM(vmCounter, brokerId, mips, numOfCores, ram, bandwidth, storage, vmm, new CloudletSchedulerSpaceShared());
The scheduler is used from the Cloudsim package, you may find it under org.cloudbus.cloudsim
CloudletSchedulerTimeShared.java
CloudletSchedulerSpaceShared.java files
Happy learning