You can now set log level per log output channel using the command Developer: Set Log Level.... This is useful when you want to see more logs only from a specific log output channel. The command will first show the list of output channels and after selecting one, you'll be prompted to set the log level.
You can also set log level per extension from the command line. This is useful when you want to see more logs from a specific extension. For example, the following script allows you to start VS Code with default log level set to debug for the log output channels from the Git extension.
In the last milestone, we introduced the LogOutputChannel API proposal for creating an output channel that is only used for logging. This iteration, we added logLevel property and onDidChangeLogLevel event to it. The logLevel property represents the current log level of the output channel and the onDidChangeLogLevel event is fired when the log level changes for the output channel.
We also added logLevel property and onDidChangeLogLevel event to env namespace to represent the current log level of the application and the event is fired when the log level changes for the application.