OS Notes Personal
Why OS? 1. Resource Management It acts as an interface between applications and resources OS makes sure that memory does not clash between apps Definition : TYPES OF OS _ MIMP FOR INTERVIEWS At a time only one process runs, after it finishes, the 2nd process starts. cons : violation of all 3 Goals 2. Batch Processing OS cons : violation of all 3 Goals J4 and J1 will also execute sequentially, so, no as such benefit If the new job with high priority comes in, it will be in next batch 3. Imp for interview 4. Each process will run for 1000ms and then, next one will start the execution All 3 Goals achieved 5. 6. 7. Examples of OS: What is Process? A and B are independent, then, we can execute it in parallel. Multi- Threading : Multi Threading : Inside a single process, multiple threads completes a task Multiprocessing : many processes p1,p2 are running on diff CPUs. 4 core cpu means 1 physical cpu and inside that 4 logica...