How to obtain system time

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Hi,

I need to measure the time that a packet is queued, so I´m interested in
getting the system time at the entry and the output of the queue.

My questions are the following:

Does the macro PSCHED_GET_TIME return the system time in usec or in jiffies?
I´m using a i586 processor, thus I assumed PSCHED_SOURCE (definided in
net/pkt_sched.h) as PSCHED_CPU. Is this the best option?

Thanks in advance

Elisabete Reis

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