Performance mode is enabled by default for the chassis. Performance mode needs more vCPUs and memory to run at higher bandwidth, while lite mode needs fewer vCPUs and memory to run at lower bandwidth. Make sure you have configured the proper number of vCPUs and memory for your VMs. You must also enable hyperthreading in BIOS.
To tune performance mode for unicast traffic, you can change the number of Workers dedicated to processing multicast and control traffic. The default specifies that all available Workers are used to process all traffic. You specify the number of dedicated Workers by configuring the number-of-ucode-workers number-workers option at the [edit chassis fpc 0 performance-mode] hierarchy level.
