[dpdk-dev] [dpdk-users] What is the 'unit of timestamp' assigned to mbuf packet in DPDK?

[Ferruh Yigit]

On 11/18/2019 2:29 PM, Gokul Bargaje wrote:
> Hi,
> 
> The timestamp assigned to packet at the time of enqueue (value of timestamp
> field in mbuf), is it in milliseconds or microseconds or in cpu cycles?

The unit is not defined [1]. 'rte_eth_read_clock()' was added [2] to help
converting it to time when it is clock counter.

[1]
918ae9dc775e ("mbuf: add a timestamp field")

[2]
5e741377657c ("ethdev: add API to read device clock")

> 
> How this timestamp is calculated? Is it calculated using the *rte_cycles.h*?
>