performance log
The performance log mainly focuses on access performance issues of external resources. The performance log refers to the log that the database system detects the running status of physical resources during operation, and the performance detection when accessing external resources, including access detection information of external resources such as disks. When a performance problem occurs, you can use the performance log to locate the cause of the problem in a timely manner, which can greatly improve the problem-solving efficiency.
Log file storage path
The performance log directory of the database node is in the corresponding directory in "$GAUSSLOG/gs_profile".
Log file naming format
Naming rules for performance logs of database nodes:
postgresql-create-time.prf
By default, a new log file will be generated at 0 o'clock every day or when the log file is larger than 20MB or the database instance (database node) is restarted.
Description of log content
The default format of the log content of each line of the database node:
Host name + date + time + instance name + thread number + log content.
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