xv6 Operating System

• contributors

phase1 & phase2: JavadZandiyeh
phase3: JavadZandiyeh & rajabi2001 -> XV6_Scheduling

Phase 1: Adding new System Calls into xv6-public

• start with xv6-public
• int getProcCount(void)

counting number of processes

• int getReadCount(void)

counting number of read processes

Phase 2: Thread Handling

• thread_creator

creates a new thread

• thread_create systemcall

using thread_creator to create a new thread

Phase 3: xv6 Scheduling

• Scheduling Policy

Round Robin(changing Quantum)
non-preemptive priority scheduling
preemptive priority scheduling
multilayer priority queue

• Change Policy
• Measuring Times

Waiting Time
Turn Around Time
CPU Burst Time
Ready Time
Running Time
Termination Time
Creation Time
Sleeping Time

• Test

roundRobinTest
PrioritySchedTest
MultiLayerQueueTest
DynamicMultiLayerQueueTest