# README
gopsutil: psutil for golang
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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>
_
- Label (linux only) The registered
-
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
- Fork it
- Create your feature branch (git checkout -b my-new-feature)
- Commit your changes (git commit -am 'Add some feature')
- Push to the branch (git push origin my-new-feature)
- Create new Pull Request
My English is terrible, so documentation or correcting comments are also welcome.