message_burst and message_cost

file: /proc/sys/net/core/message_burst and message_cost
variable: net.core.message_burst and message_cost
Official reference

These parameters are used to limit the warning messages written to the kernel log from the networking code. They enforce a rate limit to make a denial-of-service attack impossible. A higher message_cost factor, results in fewer messages that will be written. Message_burst controls when messages will be dropped. The default settings limit warning messages to one every five seconds.