Feature request from mzeis, posted on GitHub Feb 12, 2015
Some extensions log useless stuff that pollutes the logs.
The problem could be avoided if Magento as well as the extension vendors would pay more attention to the log levels already provided and use them accordingly (e.g. differentiate between debug output and real information / notices / warnings / errors).
As it may not be possible to force using the correct log levels it would be nice to have an option in the System Configuration to disable logging. One of many possible ways to solve this in the UI would be to have a multi-select listing all modules in the installation.
