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README
¶
procfs
This procfs package provides functions to retrieve system, kernel and process metrics from the pseudo-filesystem proc.
WARNING: This package is a work in progress. Its API may still break in backwards-incompatible ways without warnings. Use it at your own risk.
Documentation
¶
Overview ¶
Package procfs provides functions to retrieve system, kernel and process metrics from the pseudo-filesystem proc.
Example:
package main
import (
"fmt"
"log"
"github.com/prometheus/procfs"
)
func main() {
p, err := procfs.Self()
if err != nil {
log.Fatalf("could not get process: %s", err)
}
stat, err := p.NewStat()
if err != nil {
log.Fatalf("could not get process stat: %s", err)
}
fmt.Printf("command: %s\n", stat.Comm)
fmt.Printf("cpu time: %fs\n", stat.CPUTime())
fmt.Printf("vsize: %dB\n", stat.VirtualMemory())
fmt.Printf("rss: %dB\n", stat.ResidentMemory())
}
Index ¶
- Constants
- type FS
- type IPVSBackendStatus
- type IPVSStats
- type Proc
- func (p Proc) CmdLine() ([]string, error)
- func (p Proc) Executable() (string, error)
- func (p Proc) FileDescriptors() ([]uintptr, error)
- func (p Proc) FileDescriptorsLen() (int, error)
- func (p Proc) NewIO() (ProcIO, error)
- func (p Proc) NewLimits() (ProcLimits, error)
- func (p Proc) NewStat() (ProcStat, error)
- type ProcIO
- type ProcLimits
- type ProcStat
- type Procs
- type Stat
Constants ¶
const DefaultMountPoint = "/proc"
DefaultMountPoint is the common mount point of the proc filesystem.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type FS ¶
type FS string
FS represents the pseudo-filesystem proc, which provides an interface to kernel data structures.
func NewFS ¶
NewFS returns a new FS mounted under the given mountPoint. It will error if the mount point can't be read.
func (FS) NewIPVSBackendStatus ¶
func (fs FS) NewIPVSBackendStatus() ([]IPVSBackendStatus, error)
NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs from the specified `proc` filesystem.
func (FS) NewIPVSStats ¶
NewIPVSStats reads the IPVS statistics from the specified `proc` filesystem.
type IPVSBackendStatus ¶
type IPVSBackendStatus struct {
// The local (virtual) IP address.
LocalAddress net.IP
// The local (virtual) port.
LocalPort uint16
// The transport protocol (TCP, UDP).
Proto string
// The remote (real) IP address.
RemoteAddress net.IP
// The remote (real) port.
RemotePort uint16
// The current number of active connections for this virtual/real address pair.
ActiveConn uint64
// The current number of inactive connections for this virtual/real address pair.
InactConn uint64
// The current weight of this virtual/real address pair.
Weight uint64
}
IPVSBackendStatus holds current metrics of one virtual / real address pair.
func NewIPVSBackendStatus ¶
func NewIPVSBackendStatus() ([]IPVSBackendStatus, error)
NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs.
type IPVSStats ¶
type IPVSStats struct {
// Total count of connections.
Connections uint64
// Total incoming packages processed.
IncomingPackets uint64
// Total outgoing packages processed.
OutgoingPackets uint64
// Total incoming traffic.
IncomingBytes uint64
// Total outgoing traffic.
OutgoingBytes uint64
}
IPVSStats holds IPVS statistics, as exposed by the kernel in `/proc/net/ip_vs_stats`.
type Proc ¶
type Proc struct {
// The process ID.
PID int
// contains filtered or unexported fields
}
Proc provides information about a running process.
func (Proc) Executable ¶
Executable returns the absolute path of the executable command of a process.
func (Proc) FileDescriptors ¶
FileDescriptors returns the currently open file descriptors of a process.
func (Proc) FileDescriptorsLen ¶
FileDescriptorsLen returns the number of currently open file descriptors of a process.
func (Proc) NewLimits ¶
func (p Proc) NewLimits() (ProcLimits, error)
NewLimits returns the current soft limits of the process.
type ProcIO ¶
type ProcIO struct {
// Chars read.
RChar uint64
// Chars written.
WChar uint64
// Read syscalls.
SyscR uint64
// Write syscalls.
SyscW uint64
// Bytes read.
ReadBytes uint64
// Bytes written.
WriteBytes uint64
// Bytes written, but taking into account truncation. See
// Documentation/filesystems/proc.txt in the kernel sources for
// detailed explanation.
CancelledWriteBytes int64
}
ProcIO models the content of /proc/<pid>/io.
type ProcLimits ¶
type ProcLimits struct {
CPUTime int
FileSize int
DataSize int
StackSize int
CoreFileSize int
ResidentSet int
Processes int
OpenFiles int
LockedMemory int
AddressSpace int
FileLocks int
PendingSignals int
MsqqueueSize int
NicePriority int
RealtimePriority int
RealtimeTimeout int
}
ProcLimits represents the soft limits for each of the process's resource limits.
type ProcStat ¶
type ProcStat struct {
// The process ID.
PID int
// The filename of the executable.
Comm string
// The process state.
State string
// The PID of the parent of this process.
PPID int
// The process group ID of the process.
PGRP int
// The session ID of the process.
Session int
// The controlling terminal of the process.
TTY int
// The ID of the foreground process group of the controlling terminal of
// the process.
TPGID int
// The kernel flags word of the process.
Flags uint
// The number of minor faults the process has made which have not required
// loading a memory page from disk.
MinFlt uint
// The number of minor faults that the process's waited-for children have
// made.
CMinFlt uint
// The number of major faults the process has made which have required
// loading a memory page from disk.
MajFlt uint
// The number of major faults that the process's waited-for children have
// made.
CMajFlt uint
// Amount of time that this process has been scheduled in user mode,
// measured in clock ticks.
UTime uint
// Amount of time that this process has been scheduled in kernel mode,
// measured in clock ticks.
STime uint
// Amount of time that this process's waited-for children have been
// scheduled in user mode, measured in clock ticks.
CUTime uint
// Amount of time that this process's waited-for children have been
// scheduled in kernel mode, measured in clock ticks.
CSTime uint
// For processes running a real-time scheduling policy, this is the negated
// scheduling priority, minus one.
Priority int
// The nice value, a value in the range 19 (low priority) to -20 (high
// priority).
Nice int
// Number of threads in this process.
NumThreads int
// The time the process started after system boot, the value is expressed
// in clock ticks.
Starttime uint64
// Virtual memory size in bytes.
VSize int
// Resident set size in pages.
RSS int
// contains filtered or unexported fields
}
ProcStat provides status information about the process, read from /proc/[pid]/stat.
func (ProcStat) ResidentMemory ¶
ResidentMemory returns the resident memory size in bytes.
func (ProcStat) VirtualMemory ¶
VirtualMemory returns the virtual memory size in bytes.
Source Files