proc

Documentation

Index

• Constants
• Variables
• func GetCPUAffinity(Pid string) (*util.Bitmap, error)
• func GetMbaMbpsMode() bool
• func Init() error
• func IsCdpAvailable() (bool, error)
• func IsCqmAvailable() (bool, error)
• func IsEnableCat() bool
• func IsEnableCdp() bool
• func IsEnableRdt() bool
• func IsRdtAvailable() (bool, error)
• func IsResctrlMounted(flag string) bool
• func SetCPUAffinity(Pid string, cpus *util.Bitmap) error
• func SetMbaMbpsMode(flag bool)
• type Process

Constants

const (
	// CPUInfoPath is the patch to cpuinfo
	CPUInfoPath = "/proc/cpuinfo"
	// MountInfoPath is the mount info path
	MountInfoPath = "/proc/self/mountinfo"
	//Mounts to check the resctrl is mounted in the same path
	Mounts = "/proc/self/mounts"
)

Variables

var (
	// ResctrlPath is the patch to resctrl
	ResctrlPath string
	// MbaInfoPath is the MBA path of
	MbaInfoPath string
)

var IsEnableMba = func() (bool, error) {
	_, err := findMountDir(ResctrlPath)
	if err != nil {
		return false, err
	}
	if stat, err := os.Stat(MbaInfoPath); err == nil {
		if stat.IsDir() {
			return true, nil
		}
		return false, nil
	}
	return false, err
}

IsEnableMba returns if MBA is enabled or not

var IsL3CatAvailable = func() (bool, error) {
	return parseCPUInfoFile("cat_l3")
}

IsL3CatAvailable returns L3 CAT feature available or not

var IsMbaAvailable = func() (bool, error) {
	return parseCPUInfoFile("mba")
}

IsMbaAvailable returns MBA feature available or not

var ListProcesses = func() map[string]Process {
	processes := make(map[string]Process)
	files, _ := filepath.Glob("/proc/[0-9]*/cmdline")
	for _, file := range files {

		listfs := strings.Split(file, "/")
		if pid, err := strconv.Atoi(listfs[2]); err == nil {

			cmd, _ := ioutil.ReadFile(file)
			cmdString := strings.Join(strings.Split(string(cmd), "\x00"), " ")
			processes[listfs[2]] = Process{pid, cmdString}
		}
	}

	return processes
}

ListProcesses returns all process on the host

Functions

func GetCPUAffinity

func GetCPUAffinity(Pid string) (*util.Bitmap, error)

GetCPUAffinity returns the affinity of a given task id

func GetMbaMbpsMode

func GetMbaMbpsMode() bool

GetMbaMbpsMode returns MBA mode currently supported by rmd

func Init

func Init() error

Init does config initial

func IsCdpAvailable

func IsCdpAvailable() (bool, error)

IsCdpAvailable returns CDP feature available or not

func IsCqmAvailable

func IsCqmAvailable() (bool, error)

IsCqmAvailable returns CMT feature available or not

func IsEnableCat

func IsEnableCat() bool

IsEnableCat returns if CAT is enabled or not

func IsEnableCdp

func IsEnableCdp() bool

IsEnableCdp returns if CDP is enabled or not

func IsEnableRdt

func IsEnableRdt() bool

IsEnableRdt returns if RDT is enabled or not

func IsRdtAvailable

func IsRdtAvailable() (bool, error)

IsRdtAvailable returns RDT feature available or not

func IsResctrlMounted

func IsResctrlMounted(flag string) bool

IsResctrlMounted Checks if ResCtrl is mounted and if the path is valid

func SetCPUAffinity

func SetCPUAffinity(Pid string, cpus *util.Bitmap) error

SetCPUAffinity set a process/thread's CPU affinity func SetCPUAffinity(Pid string, affinity []int) error {

func SetMbaMbpsMode

func SetMbaMbpsMode(flag bool)

SetMbaMbpsMode stores MBA mode currently supported by rmd

Types

type Process

type Process struct {
	Pid     int
	CmdLine string
}

Process struct with pid and command line