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<!DOCTYPE html>
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<h3>eXpOS<span style="color:#14ddb3">NITC<span></h3>
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<span style="position: absolute; bottom: 40px;color:white;">National Institute of Technology, Calicut</span>
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<li class="list-group-item">
<a data-toggle="collapse" href="#nitc18"><b>Monsoon 2018, B.Tech Semester 5, Operating Systems Laboratory, NIT Calicut</b></a> -->
<div id="nitc18">
<b>Monsoon 2018, B.Tech Semester 5, Operating Systems Laboratory, NIT Calicut</b><br>
<b>Number of respondents: 42</b><br>
<b>Duration of the course: One semester (13 weeks) </b><br>
<b>Type of course: Elective.</b><br>
<br>
<p>A feedback questionnaire was circulated to all the students who credited
the course one week before the end of the semester. The responses
are summarized below</p>
<b>Major phases of the Project </b>(Each stage subsumes the previous
stages):<br>
<ul>
<li>Phase 1: Stage 12-14: Scheduling and kernel stack management</li>
<li>Phase 2: Stage 16-19: Device Handling, interrupts and Exceptions</li>
<li>Phase 3: Stage 20: Process Management</li>
<li>Phase 4: Stage 21-22: Interprocess Communication - Semaphore and
Signal-Wait</li>
<li>Phase 5: Stage 23-25: File System Implementation</li>
<li>Phase 6: Stage 26: User Management and access permissions</li>
<li>Phase 7: Stage 27: Memory Management - Disk swap management</li>
</ul>
<br>
<b>Q1. Student Performance: How many phases of the project did you complete?</b><br><br>
<img src="feedback/nitc18/nitc18q1.png">
<br>
<b>Q2. Time Management: How many hours of work did you put into the project per week on an average to complete up to what you have done?</b><br><br>
<img src="feedback/nitc18/nitc18q2.png">
<br><br>
<b>Q3. Effectiveness of road map: What percentage of work could be done without having to refer to material outside the roadmap/documentation of project ?</b><br><br>
<img src="feedback/nitc18/nitc18q3.png">
<br><br>
<b>Q4. Contribution to understanding of theory: How much did the lab help to improve your understanding of Operating Systems theory?</b><br><br>
<img src="feedback/nitc18/nitc18q4.png">
<br><br>
<b>Q5. Contribution to Coding/Software development skills: How far did this lab contribute to the improvement of your coding / software development skills?</b><br><br>
<img src="feedback/nitc18/nitc18q5.png">
<br><br>
<b>Q6. Student background: Was your background sufficient for doing the lab ? If not did you feel that your knowledge in any of the following subjects was inadequate for you?</b><br><br>
<img src="feedback/nitc18/nitc18q6.png">
<br><br>
<!--b>General Observations:</b><br>
<ol>
<li>All students completed Phase 3 and above, 93% completed phase 4 and above and 76% completed phase 5 and above</li>
<li>88.1% of students felt that they have a clear advantage in understanding the theory</li>
<li>50% of the students felt that their background in Computer organization/ Hardware was inadequate.</li>
<li>95% of students who responded their background in Computer organization/Hardware was sufficient were able to complete Phase 4 and above</li>
<li>76% of students who responded their background in Computer organization/Hardware was sufficient were able to complete Phase 5 and above</li>
<li>85% of students whose background was sufficient were able to complete Phase 5 and above</li>
<li>88% of students noted that 90% or more of the project work can be done only by referring to the project documentation and roadmap</li>
<li>100% of students who completed Phase 6 and above noted that 90% or more of the project work can be done only by referring to the project documentation and roadmap</li>
<li>93% of students who have completed phase 6 and above felt that the lab has brought moderate to considerable improvement in their coding skills</li>
<li>86% of students who completed phase 6 and above noted that every student willing to put upto 15 hours of work every week will be able to complete upto Phase 6</li>
<li>65% of students who completed phase 6 and above felt Phase 4 is very insightful</li>
<li>63% of students who completed phase 5 and above felt Phase 5 is very insightful</li>
</ol>
<br><br-->
</div>
<!--
</li>
<li class="list-group-item">
<a data-toggle="collapse" href="#iitpkd18"><b>Aug-Nov 2018, B.Tech Semester 5, Operating Systems Laboratory, IIT Palakkad</b></a> -->
<div id="iitpkd18">
<b>Aug-Nov 2018, B.Tech Semester 5, Operating Systems Laboratory, IIT Palakkad</b><br>
<b>Number of respondents: 19</b><br>
<b>Duration of the course: One semester (13 weeks) </b><br>
<b>Type of course: Core.</b><br>
<br>
<p>A feedback questionnaire was circulated to all the students who credited
the course one week before the end of the semester. The responses
are summarized below</p>
<b>Major phases of the Project </b>(Each stage subsumes the previous
stages):<br>
<ul>
<li>Phase 1: Stage 12-14: Scheduling and kernel stack management</li>
<li>Phase 2: Stage 16-19: Device Handling, interrupts and Exceptions</li>
<li>Phase 3: Stage 20: Process Management</li>
<li>Phase 4: Stage 21-22: Interprocess Communication - Semaphore and
Signal-Wait</li>
<li>Phase 5: Stage 23-25: File System Implementation</li>
<li>Phase 6: Stage 26: User Management and access permissions</li>
<li>Phase 7: Stage 27: Memory Management - Disk swap management</li>
</ul>
<br>
<b>Q1. Student Performance: How many phases of the project did you complete?</b><br><br>
<img src="feedback/iitpkd18/iitpkd18q1.png">
<p><b>Note:</b> Every student who completed Phase 6 also completed Phase
7.</p>
<br>
<b>Q2. Time Management: How many hours of work did you put into the project per week on an average to complete up to what you have done?</b><br><br>
<img src="feedback/iitpkd18/iitpkd18q2.png">
<br><br>
<b>Q3. Effectiveness of road map: What percentage of work could be done without having to refer to material outside the roadmap/documentation of project ?</b><br>
<img src="feedback/iitpkd18/iitpkd18q3.png">
<br><br>
<b>Q4. Contribution to understanding of theory: How much did the lab help to improve your understanding of Operating Systems theory?</b><br>
<img src="feedback/iitpkd18/iitpkd18q4.png">
<br><br>
<b>Q5. Contribution to Coding/Software development skills: How far did this lab contribute to the improvement of your coding / software development skills?</b><br>
<img src="feedback/iitpkd18/iitpkd18q5.png">
<br><br>
<b>Q6. Student background: Was your background sufficient for doing the lab ? If not did you feel that your knowledge in any of the following subjects was inadequate for you?</b><br>
<img src="feedback/iitpkd18/iitpkd18q6.png">
<br><br>
</div>
<div id="nitc19">
<b>Monsoon 2019, B.Tech Semester 5, Operating Systems Laboratory, NIT Calicut</b><br>
<b>Number of respondents: 58</b><br>
<b>Duration of the course: One semester (13 weeks) </b><br>
<b>Type of course: Elective</b><br>
<br>
<p>A feedback questionnaire was circulated to all the students who credited
the course one week before the end of the semester. The responses
are summarized below</p>
<b>Major phases of the Project </b>(Each stage subsumes the previous
stages):<br>
<ul>
<li>Phase 1: Stage 12-14: Scheduling and kernel stack management</li>
<li>Phase 2: Stage 16-19: Device Handling, interrupts and Exceptions</li>
<li>Phase 3: Stage 20: Process Management</li>
<li>Phase 4: Stage 21-22: Interprocess Communication - Semaphore and
Signal-Wait</li>
<li>Phase 5: Stage 23-25: File System Implementation</li>
<li>Phase 6: Stage 26: User Management and access permissions</li>
<li>Phase 7: Stage 27: Memory Management - Disk swap management</li>
<li>Phase 8: Stage 28: Multi-core Extension</li>
</ul>
<br>
<b>Q1. Student Performance: How many phases of the project did you complete?</b><br><br>
<img src="feedback/nitc19/nitc19q1.png">
<br>
<b>Q2. Time Management: How many hours of work did you put into the project per week on an average to complete up to what you have done?</b><br><br>
<img src="feedback/nitc19/nitc19q2.png">
<br><br>
<b>Q3. Effectiveness of road map: What percentage of work could be done without having to refer to material outside the roadmap/documentation of project ?</b><br><br>
<img src="feedback/nitc19/nitc19q3.png">
<br><br>
<b>Q4. Contribution to understanding of theory: How much did the lab help to improve your understanding of Operating Systems theory?</b><br><br>
<img src="feedback/nitc19/nitc19q4.png">
<br><br>
<b>Q5. Contribution to Coding/Software development skills: How far did this lab contribute to the improvement of your coding / software development skills?</b><br><br>
<img src="feedback/nitc19/nitc19q5.png">
<br><br>
<b>Q6. Student background: Was your background sufficient for doing the lab ? If not did you feel that your knowledge in any of the following subjects was inadequate for you?</b><br><br>
<img src="feedback/nitc19/nitc19q6.png">
<br><br>
</div>
<div id="nitc20">
<b>Monsoon 2020, B.Tech Semester 5, Operating Systems Laboratory, NIT Calicut</b><br>
<b>Number of respondents: 74</b><br>
<b>Duration of the course: One semester (13 weeks) </b><br>
<b>Type of course: Elective</b><br>
<br>
<p>A feedback questionnaire was circulated to all the students who credited
the course one week before the end of the semester. The responses
are summarized below</p>
<b>Major phases of the Project </b>(Each stage subsumes the previous
stages):<br>
<ul>
<li>Phase 1: Stage 12-14: Scheduling and kernel stack management</li>
<li>Phase 2: Stage 16-19: Device Handling, interrupts and Exceptions</li>
<li>Phase 3: Stage 20: Process Management</li>
<li>Phase 4: Stage 21-22: Interprocess Communication - Semaphore and
Signal-Wait</li>
<li>Phase 5: Stage 23-25: File System Implementation</li>
<li>Phase 6: Stage 26: User Management and access permissions</li>
<li>Phase 7: Stage 27: Memory Management - Disk swap management</li>
<li>Phase 8: Stage 28: Multi-core Extension</li>
</ul>
<br>
<b>Q1. Student Performance: How many phases of the project did you complete?</b><br><br>
<img src="feedback/nitc20/nitc20q1.png">
<br>
<b>Q2. Time Management: How many hours of work did you put into the project per week on an average to complete up to what you have done?</b><br><br>
<img src="feedback/nitc20/nitc20q2.png">
<br><br>
<b>Q3. Effectiveness of road map and Documentation: Was the documentation provided in the roadmap and the Expos site sufficient for doing the project?</b><br><br>
<img src="feedback/nitc20/nitc20q3.png">
<br><br>
<b>Q4. Contribution to the understanding of theory: How much did the lab help to improve your understanding of Operating Systems theory?</b><br><br>
<img src="feedback/nitc20/nitc20q4.png">
<br><br>
<b>Q5. Contribution to Coding/Software development skills: How far did this lab contribute to the improvement of your coding, debugging and software development skills?</b><br><br>
<img src="feedback/nitc20/nitc20q5.png">
<br><br>
<b>Q6: Student background: Was your background sufficient for doing the lab? If not did you feel that your knowledge in any of the following subjects was inadequate for you?</b><br><br>
<img src="feedback/nitc20/nitc20q6.png">
<br><br>
</div>
<div id="nitc21">
<b>Monsoon 2021, B.Tech Semester 5, Operating Systems Laboratory, NIT Calicut</b><br>
<b>Number of respondents: 36</b><br>
<b>Duration of the course: One semester (13 weeks) </b><br>
<b>Type of course: Elective</b><br>
<br>
<p>A feedback questionnaire was circulated to all the students who credited
the course one week before the end of the semester. The responses
are summarized below</p>
<b>Major phases of the Project </b>(Each stage subsumes the previous
stages):<br>
<ul>
<li>Phase 1: Stage 12-14: Scheduling and kernel stack management</li>
<li>Phase 2: Stage 16-19: Device Handling, interrupts and Exceptions</li>
<li>Phase 3: Stage 20: Process Management</li>
<li>Phase 4: Stage 21-22: Interprocess Communication - Semaphore and
Signal-Wait</li>
<li>Phase 5: Stage 23-25: File System Implementation</li>
<li>Phase 6: Stage 26: User Management and access permissions</li>
<li>Phase 7: Stage 27: Memory Management - Disk swap management</li>
<li>Phase 8: Stage 28: Multi-core Extension</li>
</ul>
<br>
<b>Q1. Student Performance: How many phases of the project did you complete?</b><br><br>
<img src="feedback/nitc21/nitc21q1.png">
<br>
<b>Q2. Time Management: How many hours of work did you put into the project per week on an average to complete up to what you have done?</b><br><br>
<img src="feedback/nitc21/nitc21q2.png">
<br><br>
<b>Q3. Effectiveness of road map and Documentation: Was the documentation provided in the roadmap and the Expos site sufficient for doing the project?</b><br><br>
<img src="feedback/nitc21/nitc21q3.png">
<br><br>
<b>Q4. Contribution to the understanding of theory: How much did the lab help to improve your understanding of Operating Systems theory?</b><br><br>
<img src="feedback/nitc21/nitc21q4.png">
<br><br>
<b>Q5. Contribution to Coding/Software development skills: How far did this lab contribute to the improvement of your coding, debugging and software development skills?</b><br><br>
<img src="feedback/nitc21/nitc21q5.png">
<br><br>
<b>Q6: Student background: Was your background sufficient for doing the lab? If not did you feel that your knowledge in any of the following subjects was inadequate for you?</b><br><br>
<img src="feedback/nitc21/nitc21q6.png">
<br><br>
</div>
<div>
<b>Analysis of Student Feedback (2018):</b>
<ol>
<li>Almost every respondent reported that they could complete Phase
3 (process management) in both the courses (100% at NIT Calicut
and 95% at IIT Palakkad).</li>
<li>42% of the students at IIT Palakkad and 50% of the students at
NIT Calicut noted that their background in computer organization
was insufficient.
<br> Interaction with students seem to suggest the following
issue. Computer organization typically are based on the <a href="https://en.wikipedia.org/wiki/MIPS_architecture"
target="_blank">MIPS architecture</a> and tend to stress more
on the fetch execute cycle, pipelining, cacheing and other architectural
design level issues, but lays less stress on page table address
translation and the semantics of instructions like push, pop,
call, ret and interrupt/exceptions that manipulate the stack.
However these ideas need to be understood clearly for doing the
project.
</li>
<li>53% of the respondents at IIT Palakkad and 88% of the respondents
at NIT Calicut noted that 90% of the project can be done completely
based on the road map.</li>
<li>48% of the respondents at IIT Palakkad (and 76% at NIT Calicut)
completed Phase 5 (process management, interprocess communication
and file system implementation). 33% among those who completed
Phase 5 at IIT Palakkad (respectively 47% at NIT Calicut) completed
all the phases of the project.
<br> The disparity in the effectiveness of the road map and the
performance statistics in the courses at NIT Calicut and IIT
Palakkad is due to the following. The course at NIT Calicut was
an elective and hence only students who had sufficient interest
and background to follow the project roadmap had enrolled for
the project (64 of a total of 158 CS students (40%)). At IIT
Palakkad, the project was part of a compulsory core course.
</li>
<li>88% of the respondents at NIT Calicut and 68% of the respondents
at IIT Palakkad reported that doing the lab gave a clear advantage
in understanding the theory.
<br> The difference appears to be due to the difference in the
instructional methodology adapted for the OS theory course (core
in both the institutions). At NIT Calicut, the theory course
had a huge (150+) student enrollment and followed a standard
theory approach based on <a href="https://dl.acm.org/citation.cfm?id=1412284"
target="_blank">Silberschatz et. al., Operating System Concepts</a>.
On the other hand, at IIT Palakkad, the class size was small
(30+) and the course was based on the OS kernel design approach
based on <a href="https://dl.acm.org/citation.cfm?id=524414"
target="_blank">C. Crowley Operating Systems: A Design-Oriented Approach</a>.
As the latter text covers many of the design issues encountered
during the project, the enforcement that the laboratory gave
to the understanding of theory was less dramatic.
</li>
<li> Whereas 22% of the students at NIT Calicut who completed Stage
5 or above reported that more than 15 hours of work per week
was needed for the project, only 11% of the students at IIT Palakkad
who completed Stage 5 or above reported so. 67% of the respondents
at IIT Palakkad who had completed Stage 5 or above responded
that 10-15 hours/week was sufficient whereas only 44% of the
respondents at NIT Calicut reported that 10-15 hours/week was
sufficient. These differences appear to be linked to the differences
in students' prior exposure to programming in the respective
institutions.
<p>Consequently 87% of the respondents at NIT Calicut noted that
the project helped them in improving their coding skills, whereas
only 37% of the respondents at IIT Palakkad noted that the
project improved their coding skills.</p>
</li>
</ol>
<b>Analysis of Student Feedback (2019):</b>
<ol>
<li>60% of respondents at NIT Calicut felt that their background was
sufficient as compared to 31% in 2018. This is due to the following:
A few theory lectures were arranged in the beginning of the semester
to discuss background material in computer organisation (paging
and address translation, interrupts and exceptions and other
features of XSM which are significantly different from the MIPS
architecture). Moreover, one senior student volunteer who had
done the project in the previous was assigned to mentor each
student doing the project in the present year. These steps helped
to solve the difficulties substantially. We conclude that conducting
a few theory lectures on topics in computer organization that
are relevant to the project at the beginning of the course can
bring about substantial improvements in student performance.</li>
<li>There was a significant increase in the percentage of students
who reported that the project brought about substantial improvements
to their coding skills (from 24% to 46%). On discussions with
students to analyze this feedback, the following was observed.
We had made substantial improvements to the XSM debugging environment
(which is more or less similar to the <a href="https://en.wikipedia.org/wiki/GNU_Debugger">GDB</a> environment) before the laboratory was run in 2019. We had also
insisted that the students be familiar with the debugging environment
at an early stage of the project. Many students reported that
the project helped them in improving their code debugging skills
considerably; and this resulted in many students reporting that
the project improved their coding skills in the feedback form.</li>
<li>A significant drop in the percentage of students completing Phase
5 (file system implementation) was observed (from 76% in 2018
to 48% in 2019). Upon checking the facts which lead to this drop,
we found that a significant percentage among the 84% students
who had completed Phase 4 was working on the file system implementation,
and the feedback was collected before they could complete the
file system implementation. Most of these students had completed
subtaintial parts of the file system. Hence, we still expect
that 60-75% of the class to successfully complete (the whole
or significant parts of) the file system implementation phase
when the course is conducted in future as well.</li>
</ol>
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