Re: How to find TCP slowstart phase begins

[samira afzal <afzal.samira () gmail com>]

Thanks a lot for your useful information Jaap.
I was thinking because the simulation is loopback it has to have always the
same output.But today i took the result and i saw that i have different
throughput and rtt. What could have effect on localhost and loopback ? My
computer connection to the internet is eth0 ( and my computer has not wifi
connection) . and i captured information on   "loopback:lo" interface.
Thanks a lot for your time

On Sun, Feb 12, 2017 at 8:25 AM, Jaap Keuter <jaap.keuter () xs4all nl> wrote:

> Hi,
>
> If you would zoom in right at the origin, you’ll likely to see the slow
> start. but it will rapidly transition to congestion avoidance.
>
> Thanks,
> Jaap
>
>
>
> On 12 Feb 2017, at 07:39, samira afzal <afzal.samira () gmail com> wrote:
>
> Hi all,
> I got sequence numbers vs. time . Data transmission is over TCP and
> localhost from client to server. As the transmission is on TCP, I had the
> expectation that TCP starts to send 2 packets first and then 4 , 8, 16 and
> etc. Something similar to http://packetlife.net/blog/
> 2011/jul/5/tcp-slow-start/. but my Graph is different. and i can't
> understand why? Is it possible to understand when TCP slowstart phase
> begins and ends?
> [image: Inline image 1]
>
> Thank you for your time and help.
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