mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-30 15:50:08 +01:00
337 lines
12 KiB
Go
337 lines
12 KiB
Go
// +build linux
|
|
|
|
package perf
|
|
|
|
import (
|
|
"go.uber.org/multierr"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
const (
|
|
// L1DataReadHit is a constant...
|
|
L1DataReadHit = (unix.PERF_COUNT_HW_CACHE_L1D) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// L1DataReadMiss is a constant...
|
|
L1DataReadMiss = (unix.PERF_COUNT_HW_CACHE_L1D) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
// L1DataWriteHit is a constant...
|
|
L1DataWriteHit = (unix.PERF_COUNT_HW_CACHE_L1D) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// L1InstrReadMiss is a constant...
|
|
L1InstrReadMiss = (unix.PERF_COUNT_HW_CACHE_L1I) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
|
|
// LLReadHit is a constant...
|
|
LLReadHit = (unix.PERF_COUNT_HW_CACHE_LL) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// LLReadMiss is a constant...
|
|
LLReadMiss = (unix.PERF_COUNT_HW_CACHE_LL) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
// LLWriteHit is a constant...
|
|
LLWriteHit = (unix.PERF_COUNT_HW_CACHE_LL) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// LLWriteMiss is a constant...
|
|
LLWriteMiss = (unix.PERF_COUNT_HW_CACHE_LL) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
|
|
// DataTLBReadHit is a constant...
|
|
DataTLBReadHit = (unix.PERF_COUNT_HW_CACHE_DTLB) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// DataTLBReadMiss is a constant...
|
|
DataTLBReadMiss = (unix.PERF_COUNT_HW_CACHE_DTLB) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
// DataTLBWriteHit is a constant...
|
|
DataTLBWriteHit = (unix.PERF_COUNT_HW_CACHE_DTLB) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// DataTLBWriteMiss is a constant...
|
|
DataTLBWriteMiss = (unix.PERF_COUNT_HW_CACHE_DTLB) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
|
|
// InstrTLBReadHit is a constant...
|
|
InstrTLBReadHit = (unix.PERF_COUNT_HW_CACHE_ITLB) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// InstrTLBReadMiss is a constant...
|
|
InstrTLBReadMiss = (unix.PERF_COUNT_HW_CACHE_ITLB) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
|
|
// BPUReadHit is a constant...
|
|
BPUReadHit = (unix.PERF_COUNT_HW_CACHE_BPU) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// BPUReadMiss is a constant...
|
|
BPUReadMiss = (unix.PERF_COUNT_HW_CACHE_BPU) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
|
|
// NodeCacheReadHit is a constant...
|
|
NodeCacheReadHit = (unix.PERF_COUNT_HW_CACHE_NODE) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// NodeCacheReadMiss is a constant...
|
|
NodeCacheReadMiss = (unix.PERF_COUNT_HW_CACHE_NODE) | (unix.PERF_COUNT_HW_CACHE_OP_READ << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
// NodeCacheWriteHit is a constant...
|
|
NodeCacheWriteHit = (unix.PERF_COUNT_HW_CACHE_NODE) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16)
|
|
// NodeCacheWriteMiss is a constant...
|
|
NodeCacheWriteMiss = (unix.PERF_COUNT_HW_CACHE_NODE) | (unix.PERF_COUNT_HW_CACHE_OP_WRITE << 8) | (unix.PERF_COUNT_HW_CACHE_RESULT_MISS << 16)
|
|
)
|
|
|
|
type cacheProfiler struct {
|
|
// map of perf counter type to file descriptor
|
|
profilers map[int]Profiler
|
|
}
|
|
|
|
// NewCacheProfiler returns a new cache profiler.
|
|
func NewCacheProfiler(pid, cpu int, opts ...int) CacheProfiler {
|
|
profilers := map[int]Profiler{}
|
|
|
|
// L1 data
|
|
op := unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result := unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
l1dataReadHit, err := NewL1DataProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[L1DataReadHit] = l1dataReadHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
l1dataReadMiss, err := NewL1DataProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[L1DataReadMiss] = l1dataReadMiss
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
l1dataWriteHit, err := NewL1DataProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[L1DataWriteHit] = l1dataWriteHit
|
|
}
|
|
|
|
// L1 instruction
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
l1InstrReadMiss, err := NewL1InstrProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[L1InstrReadMiss] = l1InstrReadMiss
|
|
}
|
|
|
|
// Last Level
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
llReadHit, err := NewLLCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[LLReadHit] = llReadHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
llReadMiss, err := NewLLCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[LLReadMiss] = llReadMiss
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
llWriteHit, err := NewLLCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[LLWriteHit] = llWriteHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
llWriteMiss, err := NewLLCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[LLWriteMiss] = llWriteMiss
|
|
}
|
|
|
|
// dTLB
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
dTLBReadHit, err := NewDataTLBProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[DataTLBReadHit] = dTLBReadHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
dTLBReadMiss, err := NewDataTLBProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[DataTLBReadMiss] = dTLBReadMiss
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
dTLBWriteHit, err := NewDataTLBProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[DataTLBWriteHit] = dTLBWriteHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
dTLBWriteMiss, err := NewDataTLBProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[DataTLBWriteMiss] = dTLBWriteMiss
|
|
}
|
|
|
|
// iTLB
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
iTLBReadHit, err := NewInstrTLBProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[InstrTLBReadHit] = iTLBReadHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
iTLBReadMiss, err := NewInstrTLBProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[InstrTLBReadMiss] = iTLBReadMiss
|
|
}
|
|
|
|
// BPU
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
bpuReadHit, err := NewBPUProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[BPUReadHit] = bpuReadHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
bpuReadMiss, err := NewBPUProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[BPUReadMiss] = bpuReadMiss
|
|
}
|
|
|
|
// Node
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
nodeReadHit, err := NewNodeCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[NodeCacheReadHit] = nodeReadHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_READ
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
nodeReadMiss, err := NewNodeCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[NodeCacheReadMiss] = nodeReadMiss
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_ACCESS
|
|
nodeWriteHit, err := NewNodeCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[NodeCacheWriteHit] = nodeWriteHit
|
|
}
|
|
|
|
op = unix.PERF_COUNT_HW_CACHE_OP_WRITE
|
|
result = unix.PERF_COUNT_HW_CACHE_RESULT_MISS
|
|
nodeWriteMiss, err := NewNodeCacheProfiler(pid, cpu, op, result, opts...)
|
|
if err == nil {
|
|
profilers[NodeCacheWriteMiss] = nodeWriteMiss
|
|
}
|
|
|
|
return &cacheProfiler{
|
|
profilers: profilers,
|
|
}
|
|
}
|
|
|
|
// Start is used to start the CacheProfiler, it will return an error if no
|
|
// profilers are configured.
|
|
func (p *cacheProfiler) Start() error {
|
|
if len(p.profilers) == 0 {
|
|
return ErrNoProfiler
|
|
}
|
|
var err error
|
|
for _, profiler := range p.profilers {
|
|
err = multierr.Append(err, profiler.Start())
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Reset is used to reset the CacheProfiler.
|
|
func (p *cacheProfiler) Reset() error {
|
|
var err error
|
|
for _, profiler := range p.profilers {
|
|
err = multierr.Append(err, profiler.Reset())
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Stop is used to reset the CacheProfiler.
|
|
func (p *cacheProfiler) Stop() error {
|
|
var err error
|
|
for _, profiler := range p.profilers {
|
|
err = multierr.Append(err, profiler.Stop())
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Close is used to reset the CacheProfiler.
|
|
func (p *cacheProfiler) Close() error {
|
|
var err error
|
|
for _, profiler := range p.profilers {
|
|
err = multierr.Append(err, profiler.Close())
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Profile is used to read the CacheProfiler CacheProfile it returns an
|
|
// error only if all profiles fail.
|
|
func (p *cacheProfiler) Profile() (*CacheProfile, error) {
|
|
var err error
|
|
cacheProfile := &CacheProfile{}
|
|
for profilerType, profiler := range p.profilers {
|
|
profileVal, err2 := profiler.Profile()
|
|
err = multierr.Append(err, err2)
|
|
if err2 == nil {
|
|
if cacheProfile.TimeEnabled == nil {
|
|
cacheProfile.TimeEnabled = &profileVal.TimeEnabled
|
|
}
|
|
if cacheProfile.TimeRunning == nil {
|
|
cacheProfile.TimeRunning = &profileVal.TimeRunning
|
|
}
|
|
switch {
|
|
// L1 data
|
|
case (profilerType ^ L1DataReadHit) == 0:
|
|
cacheProfile.L1DataReadHit = &profileVal.Value
|
|
case (profilerType ^ L1DataReadMiss) == 0:
|
|
cacheProfile.L1DataReadMiss = &profileVal.Value
|
|
case (profilerType ^ L1DataWriteHit) == 0:
|
|
cacheProfile.L1DataWriteHit = &profileVal.Value
|
|
|
|
// L1 instruction
|
|
case (profilerType ^ L1InstrReadMiss) == 0:
|
|
cacheProfile.L1InstrReadMiss = &profileVal.Value
|
|
|
|
// Last Level
|
|
case (profilerType ^ LLReadHit) == 0:
|
|
cacheProfile.LastLevelReadHit = &profileVal.Value
|
|
case (profilerType ^ LLReadMiss) == 0:
|
|
cacheProfile.LastLevelReadMiss = &profileVal.Value
|
|
case (profilerType ^ LLWriteHit) == 0:
|
|
cacheProfile.LastLevelWriteHit = &profileVal.Value
|
|
case (profilerType ^ LLWriteMiss) == 0:
|
|
cacheProfile.LastLevelWriteMiss = &profileVal.Value
|
|
|
|
// dTLB
|
|
case (profilerType ^ DataTLBReadHit) == 0:
|
|
cacheProfile.DataTLBReadHit = &profileVal.Value
|
|
case (profilerType ^ DataTLBReadMiss) == 0:
|
|
cacheProfile.DataTLBReadMiss = &profileVal.Value
|
|
case (profilerType ^ DataTLBWriteHit) == 0:
|
|
cacheProfile.DataTLBWriteHit = &profileVal.Value
|
|
case (profilerType ^ DataTLBWriteMiss) == 0:
|
|
cacheProfile.DataTLBWriteMiss = &profileVal.Value
|
|
|
|
// iTLB
|
|
case (profilerType ^ InstrTLBReadHit) == 0:
|
|
cacheProfile.InstrTLBReadHit = &profileVal.Value
|
|
case (profilerType ^ InstrTLBReadMiss) == 0:
|
|
cacheProfile.InstrTLBReadMiss = &profileVal.Value
|
|
|
|
// BPU
|
|
case (profilerType ^ BPUReadHit) == 0:
|
|
cacheProfile.BPUReadHit = &profileVal.Value
|
|
case (profilerType ^ BPUReadMiss) == 0:
|
|
cacheProfile.BPUReadMiss = &profileVal.Value
|
|
|
|
// node
|
|
case (profilerType ^ NodeCacheReadHit) == 0:
|
|
cacheProfile.NodeReadHit = &profileVal.Value
|
|
case (profilerType ^ NodeCacheReadMiss) == 0:
|
|
cacheProfile.NodeReadMiss = &profileVal.Value
|
|
case (profilerType ^ NodeCacheWriteHit) == 0:
|
|
cacheProfile.NodeWriteHit = &profileVal.Value
|
|
case (profilerType ^ NodeCacheWriteMiss) == 0:
|
|
cacheProfile.NodeWriteMiss = &profileVal.Value
|
|
}
|
|
}
|
|
}
|
|
if len(multierr.Errors(err)) == len(p.profilers) {
|
|
return nil, err
|
|
}
|
|
|
|
return cacheProfile, nil
|
|
}
|