sol-TutorialI - Question 1 The main concern in here is...

  • Notes
  • 2
  • 100% (1) 1 out of 1 people found this document helpful

Info icon This preview shows pages 1–2. Sign up to view the full content.

Question 1 The main concern in here is about the system call overhead. As each request for allocation of memory involves a system call, which triggers the mode switching from user-mode to kernel-mode. Frequently invoke the system calls will result in reduction of the overall performance. Thus, if we know ahead of time about the memory allocation issue, we can combine all these requests into a single memory allocation call and obtain the large memory block, and work on the assignment to individual data structures at user-space (probably using the pointer arithmetic). Question 2 Ready A process becomes ready when it is capable of using the processor when one becomes available; the process that is waiting for the processor will surely get the processor in the near future. In any responsible system, processes waiting for a long time often receive a priority boost from the operating system. Thus, the defect in a scheduling scheme could cause a ready process to wait for a long time.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.
  • Spring '10
  • DR
  • Central processing unit, long time, System Call, individual data structures

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern