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Programming language: Go
License: GNU General Public License v3.0 or later
Tags: Miscellaneous    

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README

gopsutil: psutil for golang

Test Coverage Status Go Reference

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 backwards 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.

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

Available Architectures

  • FreeBSD i386/amd64/arm
  • Linux i386/amd64/arm(raspberry pi)
  • Windows i386/amd64/arm/arm64
  • Darwin i386/amd64
  • OpenBSD amd64 (Thank you @mpfz0r!)
  • Solaris amd64 (developed and tested on SmartOS/Illumos, Thank you @jen20!)

These have 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 structs to golang structs.

Usage

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 /proc by setting the HOST_PROC environment variable.

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

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

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

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

You can set an alternative location to /dev by setting the 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
  • 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 code is ported from Ohai. many thanks.

Current Status

  • x: works
  • b: almost works, but something is broken
name Linux FreeBSD OpenBSD macOS 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 macOS 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 macOS 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:

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

English is not my native language, so PRs correcting grammar or spelling are welcome and appreciated.


*Note that all licence references and agreements mentioned in the gopsutil README section above are relevant to that project's source code only.