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1 title: Studying Operating System Using Docker
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2 author: Shivani Dubey
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3 profile: Intern, University of the Ryukyus
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4
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5 # Introduction
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6
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7
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8 - Docker
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9 - xv6
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10
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11 Why Docker?
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12
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13
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14 The modern platform for high velocity innovation.
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15 Docker container is not any specific platform. It can run on any computer, on any infrastructure and in any cloud.
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16
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17 ## Features of Docker
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18
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19 - Easy and Faster Configuration
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20 - Increases productivity
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21 - Application Isolation
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22 - Swarm
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23 - Routing Mesh
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24 - Services
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25 - Security Management
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26
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27 What is xv6?
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28
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29
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30 xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
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31
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32 ## Scheduling processes by their priorities
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33
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34
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35
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36 We implemented the concept of scheduling processes by their priorities.
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37
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38 ```c
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39 int get_highest_priority_proc(void)
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40 {
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41 int highest_priority;
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42 int pid = 0;
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43 int hpid = -1;
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44 int rpid = 0;
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45
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46 highest_priority=100;
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47 struct proc *p;
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48 for(p = ptable.proc; p < &ptable.proc[NPROC]; p++, pid++){
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49 if(p->state != RUNNABLE) {
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50 continue;
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51 }
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52 rpid = pid;
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53 if (highest_priority > p->priority) {
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54 highest_priority=p->priority;
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55 hpid = pid;
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56 }
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57 }
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58 return hpid > 0?hpid:rpid;
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59 }
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60 ```
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61
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62
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63 ## Docker Limitations
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64
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65
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66
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67 Docker environment poses some problems, some of which are difficult to comprehend. |
