Go sigar 
Overview
Go sigar is a golang implementation of the sigar API. The Go version of sigar has a very similar interface, but is being written from scratch in pure go/cgo, rather than cgo bindings for libsigar.
Test drive
$ go get github.com/elastic/gosigar
$ cd $GOPATH/src/github.com/elastic/gosigar/examples/ps
$ go build
$ ./ps
Supported platforms
The features vary by operating system.
| Feature | Linux | Darwin | Windows | OpenBSD | FreeBSD |
|---|---|---|---|---|---|
| Cpu | X | X | X | X | X |
| CpuList | X | X | X | X | |
| FDUsage | X | X | |||
| FileSystemList | X | X | X | X | X |
| FileSystemUsage | X | X | X | X | X |
| HugeTLBPages | X | ||||
| LoadAverage | X | X | X | X | |
| Mem | X | X | X | X | X |
| ProcArgs | X | X | X | X | |
| ProcEnv | X | X | X | ||
| ProcExe | X | X | X | ||
| ProcFDUsage | X | X | |||
| ProcList | X | X | X | X | |
| ProcMem | X | X | X | X | |
| ProcState | X | X | X | X | |
| ProcTime | X | X | X | X | |
| Swap | X | X | X | X | |
| Uptime | X | X | X | X |
OS Specific Notes
FreeBSD
Mount both linprocfs and procfs for compatability. Consider adding these
mounts to your /etc/fstab file so they are mounted automatically at boot.
sudo mount -t procfs proc /proc
sudo mkdir -p /compat/linux/proc
sudo mount -t linprocfs /dev/null /compat/linux/proc
License
Apache 2.0