In this guide will be explained how to enable packet profiling and use it with the most recent code of Suricata on Ubuntu. It is based on the assumption that you have already installed Suricata once from the GIT repository.
Packet profiling is convenient in case you would like to know how long packets take to be processed. It is a way to figure out why certain packets are being processed quicker than others, and this way a good tool for developing Suricata.
Update Suricata by following the steps from Installation from Git. Start at the end at
cd suricata/oisf git pull
And follow the described next steps. To enable packet profiling, make sure you enter the following during the configuring stage:
Find a folder in which you have pcaps. If you do not have pcaps yet, you can get these with Wireshark. See Sniffing Packets with Wireshark.
Go to the directory of your pcaps. For example:
With the ls command you can see the content of the folder. Choose a folder and a pcap file
Run Suricata with that pcap:
suricata -c /etc/suricata/suricata.yaml -r log.pcap.(followed by the number/name of your pcap)
suricata -c /etc/suricata/suricata.yaml -r log.pcap.1304589204