NetSuite governs the amount of script execution logging that can be done. The governance model is as follows:
Within a 60–minute time period, an account is allowed to make up to 100,000 N/log module method calls across all of their scripts.
Script owners are notified if NetSuite detects that a script is logging excessively and NetSuite automatically adjusts the log level. This ensures that the offending script continues to execute and helps prevent an inordinate amount of logging from one company. For example, Spruce Street Foods has 10 scripts running during a 60–minute time period. If one of the scripts calls log.debug(options) 70,000 times within each 20–minute time period, NetSuite will automatically raise the script’s log level.
The change to the log level will appear in the Log Level field on the script’s Script Deployment page:

If the offending script’s log level was originally set to Debug, NetSuite will increase the level to Audit. This means that the log.debug line of code will continue to execute, however, nothing will be logged, because the log level for the script has been raised to Audit and the line of code is using the Debug level.