> For the complete documentation index, see [llms.txt](https://virtualfactory.gitbook.io/vlft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://virtualfactory.gitbook.io/vlft/use-cases/jsimio/manufacturing-system/jsim-js.md).

# Performance Evaluation of a Job Shop using JSim

## Case Description

The job shop is composed by 5 machines and 5 buffers. Each buffer is associated to the machine in front of it (e.g. B1 is associated only with M1). All the machines are physically connected each other and the path of a part type inside the system is defined by its production process. The processing time of each machine depends on the part (class) to be worked.

![Production data](/files/-MN3vFa3CgLzEqP1a8C7)

![Mean times to failure and to repair for each machine](/files/-MNzK1jqjuZaj-yKgbEq)

![Buffer sizes for each machine](/files/-MNzK1jriTE3KVrnm9Kl)

## Formal model

![Formal model](/files/-MN3vzAPMQ8bPcK1mMxz)

## Performance Evaluation

![JMT - Home panel](/files/-MN3wHArYTewMU7jb7SR)

* Open JSIMgraph from the various tools in the home panel of JMT software.

![Source and sink nodes](/files/-MN3wyaCeM1LVmeQDGHS)

* Select the **source and sink** icons in the toolbar and then place it in the workspace.

![System model](/files/-MN3wXft_HUL_SvGPT5T)