Hello, I trying to debug some slowness on an application. Even if I think that these slowness are not related to an issue on network, I saw some strange behavior on TCP retransmission. I got a lot of duplicate ACK and TCP retransmission in the dump. While looking deeper in packets (heavy server response), I noticed that duplicate packets have same sequence number (quite normal) but are captured exactly at the same time. It could have been a bug during capture but this behavior does not happen on each packet. Dump is take on a citrix client. Does sombody have an explanation? asked 12 Jul '14, 05:23  kireito |
One Answer:
If the ip.id is the same in both packets, then the packet was just traced twice. You could 'dedup' the trace using Regards Matthias answered 13 Jul '14, 01:42  mrEEde |
Thank You for the answer. The dedup on the file has resolved some problems but not all.
In fact packet are flag with interface id 0 and some other with interface id 1.
Now I got a dump from server side, witch is more cleaner. This doesn't resolv my slowness problems but it's possible to troubleshoot.