Abstract: A logging system is disclosed, which is set with a primary filtering level and a secondary filtering level. A log message is saved in a log stream with a log level higher than or equal to the secondary filtering level in a buffer region. In response to a log filtering flag being set to the primary filtering level, a log message in the buffer region is output with the log level higher than or equal to the primary filtering level to a target region. In addition, all log messages in the buffer region to the target region are output in response to the log filtering flag being set to the secondary filtering level. Beneficially, unnecessary log messages are avoided from being output to the target region, while ensuring that required log messages are output to the target region, thereby improving the quality of log files.

Abstract: A logging system is disclosed, which is set with a primary filtering level and a secondary filtering level. A log message is saved in a log stream with a log level higher than or equal to the secondary filtering level in a buffer region. In response to a log filtering flag being set to the primary filtering level, a log message in the buffer region is output with the log level higher than or equal to the primary filtering level to a target region. In addition, all log messages in the buffer region to the target region are output in response to the log filtering flag being set to the secondary filtering level. Beneficially, unnecessary log messages are avoided from being output to the target region, while ensuring that required log messages are output to the target region, thereby improving the quality of log files.