dmesg

kernel-related log messages

‘dmesg’ (display message) provides vital information that can be used for troubleshooting production performance problems.

‘dmesg’ command prints all the kernel-related log messages in the console. It includes messages related to the device driver, OS patching, memory, disk drives, network, etc… Thus, if your application suffers from performance problems, you may use this command to determine whether it’s caused due to any kernel-related problems.