TCP::rttvar¶
Description¶
Returns the Round Trip Time Variance, which is an indication of path
jitter. TCP uses this figure, combined with RTT, to compute the RTO.
Note that the value returned is in units of “1/16 of a millisecond”.
Divide the returned value by 16 to get the actual variance in
milliseconds.
Return Value¶
The measured RTT variance in units of “1/16 of a millisecond”. Divide
the returned value by 16 to get the actual variance in milliseconds.