What's the noun for schedulability? Here's the word you're looking for.
schedule
(obsolete) A slip of paper; a short note. [14th-17th c.]
(law) A written or printed table of information, often forming an annex or appendix to a statute or other regulatory instrument, or to a legal contract. [from 15th c.]
(US, law) One of the five divisions into which controlled drugs are classified, or the restrictions denoted by such classification. [from 20th c.]
A timetable, or other time-based plan of events; a plan of what is to occur, and at what time. [from 19th c.]
(computer science) An allocation or ordering of a set of tasks on one or several resources. [from 20th c.]
“I sighed, knowing the hectic schedule I'd just gotten myself into.”
“Without a clear schedule of questions, it is likely that, if data were collected, it would be muddled.”
scheduler
A person or device that determines a schedule, that determines the order that tasks are to be done.
(computer science) An operating systemcomponent responsible for allocating several resources, most commonly the use of processors by different concurrent processes or threads. [from 20th c.]