const DefaultMountPoint = "/proc"
DefaultMountPoint is the common mount point of the proc filesystem.
func NewIPVSBackendStatus() ([]IPVSBackendStatus, error)
NewIPVSBackendStatus reads and returns the status of all (virtual,real) server pairs.
type FS string
FS represents the pseudo-filesystem proc, which provides an interface to kernel data structures.
func NewFS(mountPoint string) (FS, error)
NewFS returns a new FS mounted under the given mountPoint. It will error if the mount point can't be read.
func (fs FS) AllProcs() (Procs, error)
AllProcs returns a list of all currently available processes.
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 FS) NewIPVSStats() (IPVSStats, error)
NewIPVSStats reads the IPVS statistics from the specified `proc` filesystem.
func (fs FS) NewProc(pid int) (Proc, error)
NewProc returns a process for the given pid.
func (fs FS) NewStat() (Stat, error)
NewStat returns an information about current kernel/system statistics.
func (fs FS) ParseMDStat() (mdstates []MDStat, err error)
ParseMDStat parses an mdstat-file and returns a struct with the relevant infos.
func (fs FS) Path(p ...string) string
Path returns the path of the given subsystem relative to the procfs root.
func (fs FS) Self() (Proc, error)
Self returns a process for the current process.
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.
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`.
func NewIPVSStats() (IPVSStats, error)
NewIPVSStats reads the IPVS statistics.
type MDStat struct {
// Name of the device.
Name string
// activity-state of the device.
ActivityState string
// Number of active disks.
DisksActive int64
// Total number of disks the device consists of.
DisksTotal int64
// Number of blocks the device holds.
BlocksTotal int64
// Number of blocks on the device that are in sync.
BlocksSynced int64
}
MDStat holds info parsed from /proc/mdstat.
type Proc struct {
// The process ID.
PID int
// contains filtered or unexported fields
}
Proc provides information about a running process.
func NewProc(pid int) (Proc, error)
NewProc returns a process for the given pid under /proc.
func Self() (Proc, error)
Self returns a process for the current process read via /proc/self.
func (p Proc) CmdLine() ([]string, error)
CmdLine returns the command line of a process.
func (p Proc) Comm() (string, error)
Comm returns the command name of a process.
func (p Proc) Executable() (string, error)
Executable returns the absolute path of the executable command of a process.
func (p Proc) FileDescriptorTargets() ([]string, error)
FileDescriptorTargets returns the targets of all file descriptors of a process. If a file descriptor is not a symlink to a file (like a socket), that value will be the empty string.
func (p Proc) FileDescriptors() ([]uintptr, error)
FileDescriptors returns the currently open file descriptors of a process.
func (p Proc) FileDescriptorsLen() (int, error)
FileDescriptorsLen returns the number of currently open file descriptors of a process.
func (p Proc) NewIO() (ProcIO, error)
NewIO creates a new ProcIO instance from a given Proc instance.
func (p Proc) NewLimits() (ProcLimits, error)
NewLimits returns the current soft limits of the process.
func (p Proc) NewStat() (ProcStat, error)
NewStat returns the current status information of the process.
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 struct {
// CPU time limit in seconds.
CPUTime int
// Maximum size of files that the process may create.
FileSize int
// Maximum size of the process's data segment (initialized data,
// uninitialized data, and heap).
DataSize int
// Maximum size of the process stack in bytes.
StackSize int
// Maximum size of a core file.
CoreFileSize int
// Limit of the process's resident set in pages.
ResidentSet int
// Maximum number of processes that can be created for the real user ID of
// the calling process.
Processes int
// Value one greater than the maximum file descriptor number that can be
// opened by this process.
OpenFiles int
// Maximum number of bytes of memory that may be locked into RAM.
LockedMemory int
// Maximum size of the process's virtual memory address space in bytes.
AddressSpace int
// Limit on the combined number of flock(2) locks and fcntl(2) leases that
// this process may establish.
FileLocks int
// Limit of signals that may be queued for the real user ID of the calling
// process.
PendingSignals int
// Limit on the number of bytes that can be allocated for POSIX message
// queues for the real user ID of the calling process.
MsqqueueSize int
// Limit of the nice priority set using setpriority(2) or nice(2).
NicePriority int
// Limit of the real-time priority set using sched_setscheduler(2) or
// sched_setparam(2).
RealtimePriority int
// Limit (in microseconds) on the amount of CPU time that a process
// scheduled under a real-time scheduling policy may consume without making
// a blocking system call.
RealtimeTimeout int
}
ProcLimits represents the soft limits for each of the process's resource limits. For more information see getrlimit(2): http://man7.org/linux/man-pages/man2/getrlimit.2.html.
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 (s ProcStat) CPUTime() float64
CPUTime returns the total CPU user and system time in seconds.
func (s ProcStat) ResidentMemory() int
ResidentMemory returns the resident memory size in bytes.
func (s ProcStat) StartTime() (float64, error)
StartTime returns the unix timestamp of the process in seconds.
func (s ProcStat) VirtualMemory() int
VirtualMemory returns the virtual memory size in bytes.
type Procs []Proc
Procs represents a list of Proc structs.
func AllProcs() (Procs, error)
AllProcs returns a list of all currently available processes under /proc.
func (p Procs) Len() int
func (p Procs) Less(i, j int) bool
func (p Procs) Swap(i, j int)
type Stat struct {
// Boot time in seconds since the Epoch.
BootTime int64
}
Stat represents kernel/system statistics.
func NewStat() (Stat, error)
NewStat returns kernel/system statistics read from /proc/stat.