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 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, 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)