aliten / gopsutil

psutil for golang

gopsutil: psutil for golang

This is a port of psutil(http://pythonhosted.org/psutil/). This challenges porting all psutil functions on some architectures.

Available archtectures

• FreeBSD/amd64
• Linux/amd64
• Linux/arm (raspberry pi)
• Windows/amd64

(I do not have a darwin machine)

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

Usage

import (
 "fmt"

 "github.com/shirou/gopsutil"
)

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

 // almost every return value is 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)}

Document

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

More info

To becomes more useful, I have some methods which produces more information.

• Hostinfo() (linux)
  • OS
  • Platform (ex: ubuntu, arch)
  • Platform family (ex: debian)
  • Platform Version (ex: Ubuntu 13.10)
  • VirtualizationSystem (ex: LXC)
  • VirtualizationRole (ex: guest/host)
• CPUInfoStat() (linux, freebsd)
  • Processer
  • Vendor ID
  • Model name
  • cores
  • Mhz
  • etc...
• LoadAvg() (linux, freebsd)
  • Load1
  • Load5
  • Load15
• GetDockerIDList() (linux)
  • container id list ([]string)
• CgroupCPU() (linux)
  • user
  • system
• CgroupMem() (linux)
  • various status

Some codes are ported from Ohai. many thanks.

Current Status

• done
  • cpu_times (linux, freebsd)
  • cpu_count (linux, freebsd, windows)
  • virtual_memory (linux, freebsd, windows)
  • swap_memory (linux, freebsd)
  • disk_partitions (linux, freebsd, windows)
  • disk_io_counters (linux)
  • disk_usage (linux, freebsd, windows)
  • net_io_counters (linux, freebsd, windows)
  • boot_time (linux, freebsd, windows(but little broken))
  • users (linux, freebsd)
  • pids (linux, freebsd)
  • pid_exists (linux, freebsd)
  • Process class
    • pid (linux, freebsd, windows)
    • ppid (linux, freebsd, windows)
    • name (linux)
    • cmdline (linux)
    • create_time (linux)
    • status (linux)
    • cwd (linux)
    • exe (linux, freebsd, windows)
    • uids (linux, freebsd)
    • gids (linux, freebsd)
    • terminal (linux, freebsd)
    • io_counters (linux)
    • nice (linux)
    • num_fds (linux)
    • num_ctx_switches (linux)
    • num_threads (linux, freebsd, windows)
    • cpu_times (linux)
    • memory_info (linux, freebsd)
    • memory_info_ex (linux)
    • memory_maps() (linux)
    • open_files (linux)
    • send_signal (linux, freebsd)
    • suspend (linux, freebsd)
    • resume (linux, freebsd)
    • terminate (linux, freebsd)
    • kill (linux, freebsd)
• not yet
  • cpu_percent
  • cpu_times_percent
  • net_connections
  • Process class
    • username
    • ionice
    • rlimit
    • num_handlers
    • threads
    • cpu_percent
    • cpu_affinity
    • memory_percent
    • children
    • connections
    • is_running
• future work
  • process_iter
  • wait_procs
  • Process class
    • parent (use ppid instead)
    • as_dict
    • wait

License

New BSD License (same as psutil)

Related works

• psutil: http://pythonhosted.org/psutil/
• dstat: https://github.com/dagwieers/dstat
• gosiger: 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/

I have influenced from these great works.

How to Contributing

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 engilsh is terrible, documentation or correcting comments are also welcome.