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perf:tldr:1cad9
The command sudo perf record -p ${pid}
is used to start profiling the performance of a specific running process with the given process ID (${pid}
). Here's how the command works:
-
sudo
: Thesudo
command is used to run another command with administrative (root) privileges. -
perf
: It is a performance analysis tool available in Linux systems. It can be used to collect and analyze various performance-related data. -
record
: This subcommand ofperf
is used to start recording performance events. -
-p ${pid}
: The-p
option is used to specify the process ID (${pid}
) for which the profiling needs to be done. The${pid}
variable should be replaced with the actual process ID.
By executing this command with the necessary privileges and specifying the process ID, the perf
tool will start recording various performance events for the specified process. These events can later be analyzed to identify performance bottlenecks, resource usage, and other performance-related details.