| `VPPTop <(https://github.com/PANTHEONtech/vpptop)>`__ is a real-time |
| data viewer for VPP interfaces and metrics displayed in dynamic terminal |
| user interface, written in GO. |
| Following make targets are available: |
| * ``install`` downloads and installs VPPTop including all external dependencies, binary API generator |
| and latest version of GO. Running ``make install-dep`` (from the VPP top-level Makefile) is recommended. |
| * ``cleanup`` removes VPPTop repository from the target directory (``/build-root/vpptop``) |
| * ``start`` runs the VPPTop if installed |
| * ``help`` shows information about available commands |
| The VPPTop is installed to be compatible with the given VPP version and |
| may not work with other versions with different API. In that case, the |
| VPPTop has to be re-installed. |
| The installer depends on Golang environment variables GOROOT (for the GO |
| installation) and GOPATH (for other binaries). Those variables are read |
| from the environment and set to following values if not found: |
| GOROOT=/root/.go/ GOPATH=/root/go/ |
| If you have the GO already installed and have to run the installer with |
| ``sudo``, use the ``-E`` switch to provide those variables to the |