ACL log update threshold
When an ACL is configured to log matched packets, as described in ACL logging matched packets, you can configure the frequency with which logging messages appear using the
ip access-list log-update threshold command. For example:
ip access-list log-update threshold 10
This command will have a logging message appear for every 10 hits/packets rather than the default of every 5 minutes.
ipv4 access-list log-update rate command can be used to specify the number of hit logs per second to generate.