Re: [Iperf-users] [UDP test] Increasing bitrate not increase the packet loss

2020-08-02 Thread Bob McMahon via Iperf-users
Not at an intermediate network but at the host computer (or VM) that is transmitting Bob On Sun, Aug 2, 2020 at 6:49 PM Zufar Dhiyaulhaq wrote: > Hi Bob and Tim, > > Thank you for responding to my question. sometime today will try > increasing the window. Since I am testing this in a virtual en

Re: [Iperf-users] [UDP test] Increasing bitrate not increase the packet loss

2020-08-02 Thread Zufar Dhiyaulhaq
Hi Bob and Tim, Thank you for responding to my question. sometime today will try increasing the window. Since I am testing this in a virtual environment (OpenStack), it is hard to define the wire limitation. I get UDP throughput somewhere between 100-120 Mbps and TCP throughput between 50-100 Mbps

Re: [Iperf-users] [UDP test] Increasing bitrate not increase the packet loss

2020-08-02 Thread Bob McMahon via Iperf-users
If the bottleneck is the transmitter's wire that means things will back up behind that. The network stack on the client will queue packets. Since it's in a state of oversubscription there is no way for the client to ever drain the bottleneck so-to-speak. A bottleneck is when the service time is

Re: [Iperf-users] [UDP test] Increasing bitrate not increase the packet loss

2020-08-02 Thread Tim Chown via Iperf-users
Hi, I’m not sure exactly what you’re trying to do, but have you looked at ’tc’ as a means to simulate loss? Tim > On 1 Aug 2020, at 00:29, Zufar Dhiyaulhaq wrote: > > Hi Bob, > > Thanks for replying. In my understanding, when increasing the bitrate above > the bandwidth/throughput, it will