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Occasional Contributor
Posts: 18
Registered: ‎11-15-2012

tim_txcrd_z_vc values on F_port

Hello friends,

 

Hope everyone is doing good.

 

Do you have any idea why the stat values for an F_port might be as follows:

 

 

tim_txcrd_z             299520303   Time TX Credit Zero (2.5Us ticks)
tim_txcrd_z_vc  0- 3:  0           0           0           0
tim_txcrd_z_vc  4- 7:  299520303   0           0           0
tim_txcrd_z_vc  8-11:  0           0           0           0
tim_txcrd_z_vc 12-15:  0           0           0           0

 

 

As far as I know VC is related to ISL. What are these values stand for ?

 

And also each line has 4 columns, what does it mean ?

 

Best Regards,

Niyazi

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: tim_txcrd_z_vc values on F_port

Hi,

 

The output of portregshow is the same one, no matter if the port works as an F-port or an E-port. 

 

An F-port, even if it does not use VC, it measures the tim_txcrd_z and the register where it is stored is that one. Thre register used will change depending on the second byte of the Area# in the PID.

 

 

 

 

Rgds,

Felipon

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