Hi
One point to add here, if there are excessive logging happening then you can reduce the number of logs thats are getting written to avoid rapid logs building up in nwa .
Please check the category of the log (when you expand the log you can view category), based on the Category analysis/Fix the error or if its irrelevant you reduce the severity/Frequency of the log which will prevent entry being made in nwa using the log configuration option .
NWA-Configuration Management-Infrastructure-Log Configuration.
Regards
Srinivas.