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dev_rate
========

.. code-block:: text

   Measure link rate (bits/s) and packet rate (PPS) of a network device using
   Linux kernel counters from /sys/class/net/.

   Polls the interface statistics every second and reports time-series results.
   Waits until throughput exceeds RATE_THRESH before starting to accumulate
   results. Outputs RESULT-DEV-<role>-<side>-LINK and RESULT-DEV-<role>-<side>-PPS.

   Variables:
     NIC         - NIC index to monitor (default: 0)
     RATE_THRESH - Minimum throughput in bits/s before starting measurement (default: 1000000)
     SIDE        - Direction to monitor: "rx" or "tx" (default: rx)

   Usage:
     %import@dut dev_rate NIC=0 SIDE=rx RATE_THRESH=1000000