README

gopsutil: psutil for golang
==============================


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        :target: https://github.com/shirou/gopsutil/actions?query=workflow%3ATest

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        :target: https://coveralls.io/r/shirou/gopsutil?branch=master

.. image:: https://godoc.org/github.com/shirou/gopsutil?status.svg
        :target: http://godoc.org/github.com/shirou/gopsutil

This is a port of psutil (https://github.com/giampaolo/psutil). The challenge is porting all
psutil functions on some architectures.

v3 migration
---------------

from v3.20.10, gopsutil becomes v3 which breaks backawards compatiblity. See `v3Changes.md <_tools/v3migration/v3Changes.md>`_ more detail changes.

Tag semantics
-------------------------

gopsutil tag policy is almost same as Semantic Versioning, but automatically increase like Ubuntu versioning.

for example, `v2.17.04` means

- v2: major version
- 17: release year, 2017
- 04: release month

gopsutil aims to keep backwards-compatiblity until major version change.

Taged at every end of month, but there are only a few commits, it can be skipped.


Available Architectures
------------------------------------

- FreeBSD i386/amd64/arm
- Linux i386/amd64/arm(raspberry pi)
- Windows/amd64
- Darwin i386/amd64
- OpenBSD amd64 (Thank you @mpfz0r!)
- Solaris amd64 (developed and tested on SmartOS/Illumos, Thank you @jen20!)

These are partial support:

- CPU on DragonFly BSD (#893, Thank you @gballet!)
- host on Linux RISC-V (#896, Thank you @tklauser!)

All works are implemented without cgo by porting c struct to golang struct.


Usage
---------


.. code:: go

   package main

   import (
       "fmt"

       "github.com/shirou/gopsutil/v3/mem"
       // "github.com/shirou/gopsutil/mem"  // to use v2
   )

   func main() {
       v, _ := mem.VirtualMemory()

       // almost every return value is a struct
       fmt.Printf("Total: %v, Free:%v, UsedPercent:%f%%\n", v.Total, v.Free, v.UsedPercent)

       // convert to JSON. String() is also implemented
       fmt.Println(v)
   }

The output is below.

::

  Total: 3179569152, Free:284233728, UsedPercent:84.508194%
  {"total":3179569152,"available":492572672,"used":2895335424,"usedPercent":84.50819439828305, (snip...)}

You can set an alternative location to :code:`/proc` by setting the :code:`HOST_PROC` environment variable.

You can set an alternative location to :code:`/sys` by setting the :code:`HOST_SYS` environment variable.

You can set an alternative location to :code:`/etc` by setting the :code:`HOST_ETC` environment variable.

You can set an alternative location to :code:`/var` by setting the :code:`HOST_VAR` environment variable.

You can set an alternative location to :code:`/run` by setting the :code:`HOST_RUN` environment variable.

You can set an alternative location to :code:`/dev` by setting the :code:`HOST_DEV` environment variable.


Documentation
------------------------

see http://godoc.org/github.com/shirou/gopsutil

Requirements
-----------------

- go1.11 or above is required.


More Info
--------------------

Several methods have been added which are not present in psutil, but will provide useful information.

- host/HostInfo()  (linux)

  - Hostname
  - Uptime
  - Procs
  - OS                    (ex: "linux")
  - Platform              (ex: "ubuntu", "arch")
  - PlatformFamily        (ex: "debian")
  - PlatformVersion       (ex: "Ubuntu 13.10")
  - VirtualizationSystem  (ex: "LXC")
  - VirtualizationRole    (ex: "guest"/"host")

- IOCounters

  - Label (linux only)    The registered `device mapper name <https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-block-dm>`_

- cpu/CPUInfo()  (linux, freebsd)

  - CPU          (ex: 0, 1, ...)
  - VendorID     (ex: "GenuineIntel")
  - Family
  - Model
  - Stepping
  - PhysicalID
  - CoreID
  - Cores        (ex: 2)
  - ModelName    (ex: "Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz")
  - Mhz
  - CacheSize
  - Flags        (ex: "fpu vme de pse tsc msr pae mce cx8 ...")
  - Microcode

- load/LoadAvg()  (linux, freebsd)

  - Load1
  - Load5
  - Load15

- docker/GetDockerIDList() (linux only)

  - container id list ([]string)

- docker/CgroupCPU() (linux only)

  - user
  - system

- docker/CgroupMem() (linux only)

  - various status

- net_protocols (linux only)

  - system wide stats on network protocols (i.e IP, TCP, UDP, etc.)
  - sourced from /proc/net/snmp

- iptables nf_conntrack (linux only)

  - system wide stats on netfilter conntrack module
  - sourced from /proc/sys/net/netfilter/nf_conntrack_count

Some codes are ported from Ohai. many thanks.


Current Status
------------------

- x: work
- b: almost works, but something is broken

=================== ====== ======= ======= ====== ======= =======
name                Linux  FreeBSD OpenBSD MacOSX Windows Solaris
cpu_times             x      x       x       x       x
cpu_count             x      x       x       x       x
cpu_percent           x      x       x       x       x
cpu_times_percent     x      x       x       x       x
virtual_memory        x      x       x       x       x       b
swap_memory           x      x       x       x
disk_partitions       x      x       x       x       x
disk_io_counters      x      x       x
disk_usage            x      x       x       x       x
net_io_counters       x      x       x       b       x
boot_time             x      x       x       x       x
users                 x      x       x       x       x
pids                  x      x       x       x       x
pid_exists            x      x       x       x       x
net_connections       x              x       x
net_protocols         x
net_if_addrs
net_if_stats
netfilter_conntrack   x
=================== ====== ======= ======= ====== =======

Process class
^^^^^^^^^^^^^^^

================ ===== ======= ======= ====== =======
name             Linux FreeBSD OpenBSD MacOSX Windows
pid                 x     x      x       x       x
ppid                x     x      x       x       x
name                x     x      x       x       x
cmdline             x     x              x       x
create_time         x                    x       x
status              x     x      x       x
cwd                 x
exe                 x     x      x               x
uids                x     x      x       x
gids                x     x      x       x
terminal            x     x      x       x
io_counters         x     x      x               x
nice                x     x      x       x       x
num_fds             x
num_ctx_switches    x
num_threads         x     x      x       x       x
cpu_times           x                            x
memory_info         x     x      x       x       x
memory_info_ex      x
memory_maps         x
open_files          x
send_signal         x     x      x       x
suspend             x     x      x       x
resume              x     x      x       x
terminate           x     x      x       x       x
kill                x     x      x       x
username            x     x      x       x       x
ionice
rlimit              x
num_handlers
threads             x
cpu_percent         x            x       x
cpu_affinity
memory_percent
parent              x            x       x       x
children            x     x      x       x       x
connections         x            x       x
is_running
page_faults         x
================ ===== ======= ======= ====== =======

Original Metrics
^^^^^^^^^^^^^^^^^^^

================== ===== ======= ======= ====== ======= =======
item               Linux FreeBSD OpenBSD MacOSX Windows Solaris
**HostInfo**
hostname              x     x      x       x       x       x
  uptime              x     x      x       x               x
  proces              x     x      x                       x
  os                  x     x      x       x       x       x
  platform            x     x      x       x               x
  platformfamily      x     x      x       x               x
  virtualization      x
**CPU**
  VendorID            x     x      x       x       x      x
  Family              x     x      x       x       x      x
  Model               x     x      x       x       x      x
  Stepping            x     x      x       x       x      x
  PhysicalID          x                                   x
  CoreID              x                                   x
  Cores               x                            x      x
  ModelName           x     x      x       x       x      x
  Microcode           x                                   x
**LoadAvg**
  Load1               x     x      x       x
  Load5               x     x      x       x
  Load15              x     x      x       x
**GetDockerID**
  container id        x     no     no      no      no
**CgroupsCPU**
  user                x     no     no      no      no
  system              x     no     no      no      no
**CgroupsMem**
  various             x     no     no      no      no
================== ===== ======= ======= ====== ======= =======

- future work

  - process_iter
  - wait_procs
  - Process class

    - as_dict
    - wait


License
------------

New BSD License (same as psutil)


Related Works
-----------------------

I have been influenced by the following great works:

- psutil: https://github.com/giampaolo/psutil
- dstat: https://github.com/dagwieers/dstat
- gosigar: https://github.com/cloudfoundry/gosigar/
- goprocinfo: https://github.com/c9s/goprocinfo
- go-ps: https://github.com/mitchellh/go-ps
- ohai: https://github.com/opscode/ohai/
- bosun: https://github.com/bosun-monitor/bosun/tree/master/cmd/scollector/collectors
- mackerel: https://github.com/mackerelio/mackerel-agent/tree/master/metrics

How to Contribute
---------------------------

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

My English is terrible, so documentation or correcting comments are also
welcome.

Documentation

The Go Gopher

There is no documentation for this package.

Source Files

Directories

Path Synopsis
_tools
internal