On Jun 28, 2017, at 3:05 AM, Aleš Rygl <ales@rygl.net> wrote:
It is also strange that the drops (represented by retransmissions) are nearly independent on the average packet rate.
Because it's an average packet rate. Low packet rates aren't an issue.
I have the same amount of retransmissions at 2 a.m. (1k req/s) and at 4 p.m. (~4k req/s). Which is less than FR could just as a balancer IMHO do.
The they appear mainly at the top of the hour where we have spikes of concurrent accounting req. It looks like FR can handle quite high rate of steady load but the bottleneck could be in the amount of concurrent requests in spikes.
Yes. When the traffic spikes to more than FR can handle, bad things happen. And as I said, FR can do 20K packets/s without an issue. The limiting factor is almost always the database. Alan DeKok.