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Linux training in Chandigarh

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Linux training in Chandigarh at CBitss Technologies SCO 23-24-25 Sector 34 A Chandigarh we are REDHAT authorized partners

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Linux training in Chandigarh

  1. 1. Linux training in Chandigarh Process Management and Scheduling All modern operating systems are capable of running many processes at the same time - at least, this impression gets users. If a system has only one processor, then only one program can be run at the same time.
  2. 2. In the multiprocessor system, the number of processes running in parallel is determined by the number of physical CPUs. Kernel and processors create turbulence of multitasking - the capacity to function multiple operations in parallel by switching between periodic intervals between various applications running on the system. Since the switching intervals are very low, users do not see the intermediate short period of inactivity and receive the impression that the computer is actually doing many things simultaneously. This type of system management gives rise to many issues that solve kernel, most of which are listed below.
  3. 3. ❑ Applications should not interfere with each other unless it is explicitly desired. For example, an error in Application A should not be promoted for application B. Because Linux is a multipurpose system, it should also be ensured that programs are not capable of reading or modifying the memory content of other programs - otherwise , It would be extremely easy to access other users' private data.
  4. 4. ❑ CPU time should be shared between different applications as much as possible, making some programs more important than others. I deal with the first requirement - Memory Security - Chapter 3. In the current chapter, I focus on the methods employed by the kernel so that the CPU can be shared time and switch between processes.This double task is divided into two parts which are performed independently of each other. Mauerer runc02.tex V3 - 09/04/2008 4:15 pm Page 36 Chapter 2: Process management and scheduling
  5. 5. ❑ The kernel must decide how much time to devote to each process and when to switch to the next process. It asks the question of what exactly is the process actually next. Such decisions are not platform-dependent.
  6. 6. ❑When the kernel switches to process A to B, then it should be ensured that the B's performance environment is exactly the same as the processor resources were finally withdrawn. For example, the content of the processor registers and the structure of the virtual address space should be the same. This latter work is highly dependent on the processor type. It can not be implemented with C only, but assistance is required by the pure assembler parts. The kernel subsystem, referred to as both task scheduler, is the responsibility of. CPU time is allocated by the scheduler policy, which is completely different from the necessary function switching mechanism to switch between processes.
  7. 7. Call us @ 9988741983 Website:http://cbitss.in