Push vdbench realtime metrics to Prometheus Pushgateway.
Linux
cp vdbench_pusher path/to/vdbench ./vdbench -f <profile definition> | ./vdbench_pusher --gateway http://localhost:9091 --job test1
Windows
Notes: Classic CMD console should be used. The PowerShell console buffers all vdbench output (as STDIN of the next command) and leads to unexpected processing behaviors (refer to `Powershell piping causes explosive memory usage<https://stackoverflow.com/questions/27440768/powershell-piping-causes-explosive-memory-usage>`_ for root cause).
cp vdbench_pusher path\to\vdbench .\vdbench.bat -f <profile definition> | .\vdbench_pusher.exe --gateway http://localhost:9091 --job test1