Manual: pidpersec-bpfcc

pidpersec(8)				   System Manager's Manual				pidpersec(8)

NAME
       pidpersec - Count new processes (via fork()). Uses Linux eBPF/bcc.

SYNOPSIS
       pidpersec

DESCRIPTION
       pidpersec  shows	 how  many  new	 processes were created each second. There can be performance issues
       caused by many short-lived processes, which may not be visible in sampling tools like top(1). pidper‐
       sec provides one way to investigate this behavior.

       This works by tracing the kernel sched_fork() function using dynamic tracing, and will need  updating
       to match any changes to this function.

       Since this uses BPF, only the root user can use this tool.

REQUIREMENTS
       CONFIG_BPF and bcc.

EXAMPLES
       Count new processes created each second:
	      # pidpersec

OVERHEAD
       This  traces  the kernel fork function, and maintains an in-kernel count which is read asynchronously
       from user-space. As the rate of this is generally expected to be low (<<	 1000/s),  the	overhead  is
       also expected to be negligible.

SOURCE
       This is from bcc.

	      https://github.com/iovisor/bcc

       Also  look  in the bcc distribution for a companion _examples.txt file containing example usage, out‐
       put, and commentary for this tool.

OS
       Linux

STABILITY
       Unstable - in development.

AUTHOR
       Brendan Gregg

SEE ALSO
       top(1)

USER COMMANDS					 2015-08-18					pidpersec(8)