Backbone of computer system
+Manages the computer’s memory and processes, as well as all of its software and hardware.
+Docker
+xv6
+Why Docker?
+What is Docker?
+ +The modern platform for high velocity innovation. -Docker container is not any specific platform. It can run on any computer, on any infrastructure and in any cloud.
+What is xv6?
+ +A Unix-like operating system developed in MIT.
+xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
+emacs editor (amidst the editor war between vi and emacs!)
+homebrew (it simplifies installation of software in macOS)
+Mercurial repository of the lab where we saved everything using ssh
+What is xv6?
- -xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
-Features of Docker:
+ +Easy and Faster Configuration
+Increases productivity
+Application Isolation
+Services
+Security Management
+We implemented the concept of scheduling processes by their priorities.
+It gives a good insight into Command Line Interface of Unix OS
+xv6 is modern reimplementation of Sixth Edition Unix in ANSI C
+Added getpriority() and setpriority() and get_highest_priority() functions in proc.c file of xv6
+Added a test function testpriority() in usertests.c file of xv6 to implement our algorithm
+int get_highest_priority_proc(void)
{
@@ -164,9 +257,35 @@
-Docker Limitations
+Docker Limitation
+
+Mutliple images present in repository due to form command.
+
+If repository breaks, Docker poses problem
+
+What can be done?
+
+We can keep track of images of Docker
+
+
+
+
-Docker environment poses some problems, some of which are difficult to comprehend.
+
+
+Conclusion
+
+
+ -
+
Docker environment poses some problems, some of which are difficult to comprehend
+
+ -
+
Storage is difficult too
+
+ -
+
Yet, it gives a good insight of the underlying important concepts of operating system beacuse it is well documented, fast and uses less resources
+
+
diff -r be770be61183 -r 54dd75a92d04 slide.md
--- a/slide.md Fri Jun 21 15:28:51 2019 +0900
+++ b/slide.md Sat Jun 22 12:32:52 2019 +0900
@@ -1,39 +1,127 @@
-title: Studying Operating System Using Docker
+title: Studying Operating System Using Docker Platform
author: Shivani Dubey
-profile: Intern, University of the Ryukyus
+profile: Madan Mohan Malaviiya, University of Technology
+
+## Why we study Operating System?
+
+- Every computer system has an operating system, which manages the resource of the computer.
+
+- IoT or IT Services can't work well without resource manageents.
+
+- To handle it, we have to understand the API of OS
+
+- To understand the API, it it better to see the implentations.
+
+- For an example, API for tuning priorities of the processess
+
+## Xv6 Operating System as an educational tool
+
+- A Unix-like operating system developed in MIT, based on V6 kernel.
+
+- xv6 is written in ANSI C ( not in C++ ).
+
+- xv6 is small and simple (9628 lines of codes)
+
+- It can run on Respberry Pi ( Small PC board )
+
+- Or on ARM emulator such as QEMU
-# Introduction
+## Xv6 development envrionment with QEMU
+
+- QEMU emulates ARM CPU with virtual memory
+
+- Xv6 operating sytem itself is running on QEMU
+
+- gdb debugger can be attached to the emulated program (both in user space and system space)
+
+- We can step and trace the internal of xv6 kernel
+
+ ... but it requires complex development envrionments setup
+ ... very time consuming
+
+## Our development envrionments
+
+- emacs editor (amidst the editor war between vi and emacs!)
+
+- homebrew (it simplifies installation of software in macOS)
+
+- Mercurial repository of the lab where we saved everything using ssh
+
+- Cross Compilers
+
+- ARM libraries for C language
+
+- QEMU (ARM Emulator)
+## Introducing Docker
-- Docker
-- xv6
+- What is Docker? It is a container.
+
+- What is Container? An isolateed envriornment such as file system.
+
+- It has DockerFile, which describes how to setup the envrionment in the container
+
+- Docker can run on any computer using an emulator such as QEMU
+
+- Complex develement environment can be build using DockerFile and docker built command.
+
+# The DockerFile
+
+```
+FROM phitek/qemu-arm
+RUN apt-get update -y
+RUN apt-get remove gdb -y
+RUN apt-get install gcc-arm-none-eabi gdb-arm-none-eabi qemu-system-arm -y
+WORKDIR /code
+COPY ["src", "."]
+RUN make
+CMD /bin/bash
+```
+
+- FROM lines specifies the shared image in Docker repository.
+
+- apt-get install Linux cross compiling tools
-Why Docker?
+- then it create workig directory, and copy our sources to it, and execute make
+
+## Docker command
+
+- create docker imagae and environment, and built xv6 kernel
+
+ docker build --tag xv6-docker .
+
+- run xv6 kernel on QEMU in the container
+
+ docker run --rm --privileged -it xv6-docker ./run-debug.sh
+
+- run gdb to connect the xv6 kernel running in the QEMU
+
+ docker exec -it xv6-docker ./debug.sh
+
+## Features of Docker:
+
+- Easy and Faster Configuration
+
+- Increases productivity
+
+- Application Isolation
+
+- Provies Services
+
+- Security Management
-The modern platform for high velocity innovation.
-Docker container is not any specific platform. It can run on any computer, on any infrastructure and in any cloud.
+# Exercise : adding priorities to the xv6 scheduler
-## Features of Docker
+- Added getpriority() and setpriority()
+
+- get_highest_priority() functions in proc.c file of xv6
-- Easy and Faster Configuration
-- Increases productivity
-- Application Isolation
-- Swarm
-- Routing Mesh
-- Services
-- Security Management
+- implement it in schelduler()
-What is xv6?
-
-
-xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
+- Added a test function testpriority() in usertests.c file of xv6 to implement our algorithm
-## Scheduling processes by their priorities
-
-
-
-We implemented the concept of scheduling processes by their priorities.
+## The function
```c
int get_highest_priority_proc(void)
@@ -59,9 +147,34 @@
}
```
+- It assumes at least one process is RUNNABLE
-## Docker Limitations
+- It may allow no highest priority process.
+
+- The correctness of the function is *important*.
+
+## Docker Limitation
+
+- If repository breaks, Docker poses a problem (a cloud probelm)
+
+- Clound should be used conviniently but don't rely on it.
+
+- We can use a direct environment without Docker, since we have a Linux server.
+
+- Docker images can easily eats up our disk spaces.
-
+in ~/.zsh_history
-Docker environment poses some problems, some of which are difficult to comprehend.
\ No newline at end of file
+```c
+: 1561014922:0;docker system prune
+: 1561014973:0;docker container prune
+: 1561015350:0;docker image prune
+: 1561015362:0;docker volume prune
+```
+# Conclusion
+
+- Docker environment poses some problems, some of which are difficult to comprehend
+
+- Storage is difficult too
+
+- Yet, it gives a good insight of the underlying important concepts of operating system beacuse it is well documented, fast and uses less resources
diff -r be770be61183 -r 54dd75a92d04 slide.md~
--- a/slide.md~ Fri Jun 21 15:28:51 2019 +0900
+++ b/slide.md~ Sat Jun 22 12:32:52 2019 +0900
@@ -1,47 +1,134 @@
-title: Studying Operating System Using Docker
+title: Studying Operating System Using Docker Platform
author: Shivani Dubey
profile: Intern, University of the Ryukyus
+# Why Operating System?
+
+- Backbone of computer system
+
+- Manages the computer's memory and processes, as well as all of its software and hardware.
+
+
# Introduction
- Docker
+
- xv6
-Why Docker?
+What is Docker?
-The modern platform for high velocity innovation.
-Docker container is not any specific platform. It can run on any computer, on any infrastructure and in any cloud.
-
-## Features of Docker
+- The modern platform for high velocity innovation.
+- Docker has products that use operating system level virtualization to develop and deliver software in packages called containers.
+- Docker can run on any computer, on any infrastructure and in any cloud.
-- Easy and Faster Configuration
-- Increases productivity
-- Application Isolation
-- Swarm
-- Routing Mesh
-- Services
-- Security Management
What is xv6?
-xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
+- A Unix-like operating system developed in MIT.
+
+- xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
+
+
+# What helped us
+
+
+
+- emacs editor (amidst the editor war between vi and emacs!)
+
+- homebrew (it simplifies installation of software in macOS)
+
+- Mercurial repository of the lab where we saved everything using ssh
+
+
+## Why Docker?
+
+
+
+Features of Docker:
+
-## Scheduling processes by their priorities
+- Easy and Faster Configuration
+
+- Increases productivity
+
+- Application Isolation
+
+- Services
+
+- Security Management
+
+
+## Why xv6?
+
+
+
+- It gives a good insight into Command Line Interface of Unix OS.
+
+- xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
+
+
+# Scheduling processes by their priorities
+
-We implemented the concept of scheduling processes by their priorities.
+- Added getpriority() and setpriority() and get_highest_priority() functions in proc.c file of xv6
+
+
+
+- Added a test function testpriority() in usertests.c file of xv6 to implement our algorithm
+
+
+## The function
```c
-hjhjgbfhv
+int get_highest_priority_proc(void)
+{
+ int highest_priority;
+ int pid = 0;
+ int hpid = -1;
+ int rpid = 0;
+
+ highest_priority=100;
+ struct proc *p;
+ for(p = ptable.proc; p < &ptable.proc[NPROC]; p++, pid++){
+ if(p->state != RUNNABLE) {
+ continue;
+ }
+ rpid = pid;
+ if (highest_priority > p->priority) {
+ highest_priority=p->priority;
+ hpid = pid;
+ }
+ }
+ return hpid > 0?hpid:rpid;
+}
```
-## Docker Limitations
+## Docker Limitation
+
+
+Mutliple images present in repository due to form command.
+
+If repository breaks, Docker poses problem
+
+
+What can be done?
+We can keep track of images of Docker.
-Docker environment poses some problems, some of which are difficult to comprehend.
\ No newline at end of file
+
+# Conclusion
+
+- Docker environment poses some problems, some of which are difficult to comprehend.
+
+
+- Storage is difficult
+
+
+- Yet, it gives a good insight of the underlying important concepts of operating system beacuse it is well documented, fast and uses less resources.
\ No newline at end of file
diff -r be770be61183 -r 54dd75a92d04 slide.pdf.html
--- a/slide.pdf.html Fri Jun 21 15:28:51 2019 +0900
+++ b/slide.pdf.html Sat Jun 22 12:32:52 2019 +0900
@@ -7,7 +7,7 @@
- Studying Operating System Using Docker
+ Studying Operating System Using Docker Platform
@@ -55,7 +55,7 @@
- Studying Operating System Using Docker
+ Studying Operating System Using Docker Platform
@@ -75,17 +75,52 @@
+Why Operating System?
+
+
+ -
+
Backbone of computer system
+
+ -
+
Manages the computer’s memory and processes, as well as all of its software and hardware.
+
+
+
+
+
+
+
+
+
Introduction
- - Docker
- - xv6
+ -
+
Docker
+
+ -
+
xv6
+
-Why Docker?
+What is Docker?
+
+
+ - The modern platform for high velocity innovation
+ - Docker has products that use operating system level virtualization to develop and deliver software in packages called containers
+ - Docker can run on any computer, on any infrastructure and in any cloud
+
-The modern platform for high velocity innovation.
-Docker container is not any specific platform. It can run on any computer, on any infrastructure and in any cloud.
+What is xv6?
+
+
+ -
+
A Unix-like operating system developed in MIT.
+
+ -
+
xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
+
+
@@ -93,31 +128,89 @@
-Features of Docker
+What helped us
- - Easy and Faster Configuration
- - Increases productivity
- - Application Isolation
- - Swarm
- - Routing Mesh
- - Services
- - Security Management
+ -
+
emacs editor (amidst the editor war between vi and emacs!)
+
+ -
+
homebrew (it simplifies installation of software in macOS)
+
+ -
+
Mercurial repository of the lab where we saved everything using ssh
+
-What is xv6?
-
-xv6 is modern reimplementation of Sixth Edition Unix in ANSI C.
-
-Scheduling processes by their priorities
+Why Docker?
+
+Features of Docker:
+
+
+ -
+
Easy and Faster Configuration
+
+ -
+
Increases productivity
+
+ -
+
Application Isolation
+
+ -
+
Services
+
+ -
+
Security Management
+
+
+
+
+
+
+
+
+
+Why xv6?
-We implemented the concept of scheduling processes by their priorities.
+
+ -
+
It gives a good insight into Command Line Interface of Unix OS
+
+ -
+
xv6 is modern reimplementation of Sixth Edition Unix in ANSI C
+
+
+
+
+
+
+
+
+
+Scheduling processes by their priorities
+
+
+ -
+
Added getpriority() and setpriority() and get_highest_priority() functions in proc.c file of xv6
+
+ -
+
Added a test function testpriority() in usertests.c file of xv6 to implement our algorithm
+
+
+
+
+
+
+
+
+
+The function
int get_highest_priority_proc(void)
{
@@ -148,9 +241,35 @@
-Docker Limitations
+Docker Limitation
+
+Mutliple images present in repository due to form command.
+
+If repository breaks, Docker poses problem
+
+What can be done?
+
+We can keep track of images of Docker
+
+
+
+
-Docker environment poses some problems, some of which are difficult to comprehend.
+
+
+Conclusion
+
+
+ -
+
Docker environment poses some problems, some of which are difficult to comprehend
+
+ -
+
Storage is difficult too
+
+ -
+
Yet, it gives a good insight of the underlying important concepts of operating system beacuse it is well documented, fast and uses less resources
+
+