In order to get info about assignment (FW, SND) of all CPUs in your SGW,...

The fw ctl affinity -l -a -r -v command is the most accurate CLI command to get info about assignment (FW, SND) of all CPUs in your SGW. This command displays the affinity settings of all interfaces and processes in a verbose mode, including the Firewall (FW) and Secure Network Distributor (SND) instances. References: CoreXL Administration Guide