Re: Unexpected loss recovery in TLP

2015-09-02 Thread Eric Dumazet
On Wed, 2015-09-02 at 10:54 +0200, Mohammad Rajiullah wrote: > Hi Eric! > > Thanks for the direction. I tried packet drill locally (with the same kernel > Linux 3.18.5 to start with) > with the following script. And it doesn’t show the problem I mentioned. > So the fast retransmit happens after

Re: Unexpected loss recovery in TLP

2015-09-02 Thread Mohammad Rajiullah
Hi Eric! Thanks for the direction. I tried packet drill locally (with the same kernel Linux 3.18.5 to start with) with the following script. And it doesn’t show the problem I mentioned. So the fast retransmit happens after getting the dupack. It would be good if I could get some information from

Re: Unexpected loss recovery in TLP

2015-09-01 Thread Eric Dumazet
On Tue, 2015-09-01 at 11:36 +0200, Mohammad Rajiullah wrote: > Hi! > > While measuring TLP’s performance for an online gaming scenario, where both > the client and the server send data, TLP > shows unexpected loss recovery in Linux 3.18.5 kernel. Early retransmit fails > in response > to the

Unexpected loss recovery in TLP

2015-09-01 Thread Mohammad Rajiullah
Hi! While measuring TLP’s performance for an online gaming scenario, where both the client and the server send data, TLP shows unexpected loss recovery in Linux 3.18.5 kernel. Early retransmit fails in response to the dupack which is later resolved using RTO. I found the behaviour consisten

Unexpected loss recovery in TLP

2015-09-01 Thread Mohammad Rajiullah
Hi! While measuring TLP’s performance for an online gaming scenario, where both the client and the server send data, TLP shows unexpected loss recovery in Linux 3.18.5 kernel. Early retransmit fails in response to the dupack which is later resolved using RTO. I found the behaviour consisten