This is a fork of version 3.2.1 of the respoitory found here.

The functionality added to the fork is as follows:

• Logs start and stop times of most recent process.

plog start
ls
plog -i 0
Process: 123
	Start:	000000000
	End:	000000000

plog stop

• Allows the user to return information by index or pid.

plog -i 0		//Get item at index 0
plog -p 123		//Get item with pid 123

• User able to retrieve current size of the buffer.

plog -s
The buffer is of size 0.

• If desired, user is able to manually clear the buffer.

plog clear

• Logs the state transitions of processes specified by the user

statlog start
statlog add 740
ls
PID740  1479846379      --------------      R----E--F-----
PID740  1479846379      R----E--F-----      R-Z--E--F-----
PID740  1479846379      R-Z--E--F-----      R----E--F-----
statlog pause

• User able to clear the ids to be tracked.

statlog clear

• Modifies the default scheduling algorithm to provide a CTSS like scheduling policy.
  • This only applies to the first three queues (aka nice 0-2)
• Additionally changes made to "ps"
  • Show number of context switches per process
  • Show current quantum assigned to process

With the patch.tar file:

tar -xvf patch.tar
cd patch
make test #if you wish to only get the functionality
#or
make full #to get changes to command modules such as "ps"

In order to make the image with most recent patches, pull most recent commmit (or get the most recent patch tarball here and unzip it into any directory besize /usr/src/ (I recommend making a directory in /usr/). Once in place, run make test in the new directory. This make command will patch the files in /usr/src/, build the kernel, and reboot the system for you.

Note: If commands in the bin were changed (as they were in the CTSS-like Scheduler) a full build will need to be run. For this, run make full. However often this is not necessary as most commands are only needed for debugging purposes.