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). pidpersec provides one way to investi‐
       gate 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, output, 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)