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system (no pgrep command) and one is a normal error state of pgrep meaning no processes found for the criteria given (in this case the parent pid does not exist or the process simply has no children). The later case is quite usefull to know about so I added a static error for this case.
gopsutil: psutil for golang
==============================
.. image:: https://drone.io/github.com/shirou/gopsutil/status.png
:target: https://drone.io/github.com/shirou/gopsutil
.. image:: https://coveralls.io/repos/shirou/gopsutil/badge.svg?branch=master
: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 (http://pythonhosted.org/psutil/). The challenge is porting all
psutil functions on some architectures...
.. highlights:: Package Structure Changed!
Package (a.k.a. directory) structure has been changed!! see `issue 24 <https://github.com/shirou/gopsutil/issues/24>`_
.. highlights:: golang 1.4 will become REQUIRED!
Since syscall package becomes frozen, we should use golang/x/sys of golang 1.4 as soon as possible.
Available Architectures
------------------------------------
- FreeBSD i386/amd64
- Linux i386/amd64/arm(raspberry pi)
- Windows/amd64
- Darwin/amd64
All works are implemented without cgo by porting c struct to golang struct.
Usage
---------
.. code:: go
import (
"fmt"
"github.com/shirou/gopsutil/mem"
)
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.
Documentation
------------------------
see http://godoc.org/github.com/shirou/gopsutil
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")
- 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 ...")
- 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 work but something broken
================= ====== ======= ====== =======
name Linux FreeBSD MacOSX Windows
cpu_times x x x x
cpu_count x x x x
cpu_percent x x x x
cpu_times_percent x x x x
virtual_memory x x x x
swap_memory x x x
disk_partitions x x x x
disk_io_counters x x
disk_usage x x x x
net_io_counters x x b x
boot_time x x x x
users x x x x
pids x x x x
pid_exists x x x x
net_connections x x
net_protocols x
net_if_addrs
net_if_stats
netfilter_conntrack x
================= ====== ======= ====== =======
Process class
^^^^^^^^^^^^^^^
================ ===== ======= ====== =======
name Linux FreeBSD MacOSX Windows
pid x x x x
ppid x x x x
name x x x x
cmdline x x x
create_time x
status x x x
cwd x
exe x x x
uids x x x
gids x x x
terminal x x x
io_counters x
nice x x x
num_fds x
num_ctx_switches x
num_threads x x x x
cpu_times x
memory_info x x x
memory_info_ex x
memory_maps x
open_files x
send_signal x x x
suspend x x x
resume x x x
terminate x x x
kill x x x
username x
ionice
rlimit
num_handlres
threads
cpu_percent x x
cpu_affinity
memory_percent
parent x x
children x x x
connections x x
is_running
================ ===== ======= ====== =======
Original Metrics
^^^^^^^^^^^^^^^^^^^
================== ===== ======= ====== =======
item Linux FreeBSD MacOSX Windows
**HostInfo**
hostname x x x x
uptime x x x
proces x x
os x x x x
platform x x x
platformfamiliy x x x
virtualization x
**CPU**
VendorID x x x x
Family x x x x
Model x x x x
Stepping x x x x
PhysicalID x
CoreID x
Cores x x
ModelName x x x x
**LoadAvg**
Load1 x x x
Load5 x x x
Load15 x x x
**GetDockerID**
container id x no no no
**CgroupsCPU**
user x no no no
system x no no no
**CgroupsMem**
various x 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: http://pythonhosted.org/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.