Hello,
I wrote a very simple program in order to measure the time needed for a
sending a fixed size data packet and receiving a 1 byte acknowledge.
Basically it's:
while (..)
{
T1 = rt_get_time_ns();
Send(); // 65007 byte packet
Recv(); // 1 byte ACK
T2 = rt_get_time_ns();
}
When looking at the duration T2-T1, I found that the worst-case value
was always 1000000ns (independent of the number of loop cycles or the
packet size used).
Is this a known problem?
System information:
x86, Linux 2.6.22, RTAI 3.6cv, rtnet 0.9.9, e1000 driver with Intel
82541 NIC, no RTmac
Best regards,
Frank
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