50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
As we conclude, here is a list of questions for you to test your knowledge
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regarding this chapter's material. You will find answers to selected
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questions here:
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https://github.com/PacktPublishing/Linux-Kernel-Programming/tree/master/solutions_to_assgn
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Chapter 11 : Questions and/or Assignments
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1. A Linux CLI utility to query/set process or thread scheduling policy and
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priorities is ____; a CLI utility to query/set a process’s CPU affinity mask
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is ___.
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a. psprio, cpumask
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b. chrt, taskset
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c. psl, maskcpu
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d. Any of the above work
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2. Consider a Linux system with 8 CPU cores (numbered from 0 to 7); on it, a
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process’s CPU affinity mask shows up as 0xed; this implies that the process
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is not allowed to execute on CPU cores _____.
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a. 0, 3, and 5
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b. 0,2,3,5,6, and 7
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c. 1 and 4
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d. 1,2,3,5,6, and 7
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3. On modern Linux systems, resource bandwidth allocation is properly done
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by leveraging the kernel feature called _____.
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a. c-groups (CPU groups)
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b. Nice values
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c. CPU resource limits
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d. cgroups (control groups)
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4. This feature (from Q 3) has a pseudo filesystem typically mounted at ______.
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a. /cgr/fs
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b. /sys/fs
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c. /proc/cgroup_cpu
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d. /sys/fs/cgroup
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5. Vanilla or standard Linux is an OS that is ____.
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a. good on occasion
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b. only general-purpose (GPOS; no form of real time)
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c. hard real time (RTOS)
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d. general-purpose and can easily take on soft real-time workloads
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6. By applying a patch, Linux can be run as a hard real-time OS (an RTOS):
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True/False: ___ ; if true, this effort is now called _______ and is a Linux
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Foundation project.
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a. True, Preempt-RT
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b. True, RTL (Real-Time Linux)
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c. False, <it’s not possible>
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d. True, HardLinux
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