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Avoid slice cloning. Directly use the cache

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This commit is contained in:
Holger Obermaier 2023-09-07 11:45:38 +02:00
parent 1f5856c671
commit 094f124a18
1 changed files with 21 additions and 31 deletions
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46
pkg/ccTopology/ccTopology.go
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@ -31,12 +31,15 @@ type HwthreadEntry struct {
} }
var cache struct { var cache struct {
SocketList []int
uniqSocketList []int
HwthreadList []int HwthreadList []int
uniqHwthreadList []int uniqHwthreadList []int
CoreList []int CoreList []int
uniqCoreList []int uniqCoreList []int
SocketList []int
uniqSocketList []int
CpuData []HwthreadEntry CpuData []HwthreadEntry
} }
@ -304,14 +307,11 @@ type CpuInformation struct {
// CpuInformation reports basic information about the CPU // CpuInformation reports basic information about the CPU
func CpuInfo() CpuInformation { func CpuInfo() CpuInformation {
cpuData := CpuData()
smtList := make([]int, 0) smtList := make([]int, 0)
numaList := make([]int, 0) numaList := make([]int, 0)
dieList := make([]int, 0) dieList := make([]int, 0)
socketList := make([]int, 0) for i := range cache.CpuData {
coreList := make([]int, 0) d := &cache.CpuData[i]
for i := range cpuData {
d := &cpuData[i]
if ok := slices.Contains(smtList, d.SMT); !ok { if ok := slices.Contains(smtList, d.SMT); !ok {
smtList = append(smtList, d.SMT) smtList = append(smtList, d.SMT)
} }
@ -321,29 +321,22 @@ func CpuInfo() CpuInformation {
if ok := slices.Contains(dieList, d.Die); !ok { if ok := slices.Contains(dieList, d.Die); !ok {
dieList = append(dieList, d.Die) dieList = append(dieList, d.Die)
} }
if ok := slices.Contains(socketList, d.Socket); !ok {
socketList = append(socketList, d.Socket)
}
if ok := slices.Contains(coreList, d.Core); !ok {
coreList = append(coreList, d.Core)
}
} }
return CpuInformation{ return CpuInformation{
NumNumaDomains: len(numaList), NumNumaDomains: len(numaList),
SMTWidth: len(smtList), SMTWidth: len(smtList),
NumDies: len(dieList), NumDies: len(dieList),
NumCores: len(coreList), NumCores: len(cache.uniqCoreList),
NumSockets: len(socketList), NumSockets: len(cache.uniqSocketList),
NumHWthreads: len(cpuData), NumHWthreads: len(cache.uniqHwthreadList),
} }
} }
// GetHwthreadSocket gets the CPU socket ID for a given hardware thread ID // GetHwthreadSocket gets the CPU socket ID for a given hardware thread ID
// In case hardware thread ID is not found -1 is returned // In case hardware thread ID is not found -1 is returned
func GetHwthreadSocket(cpuID int) int { func GetHwthreadSocket(cpuID int) int {
cpuData := CpuData() for i := range cache.CpuData {
for i := range cpuData { d := &cache.CpuData[i]
d := &cpuData[i]
if d.CpuID == cpuID { if d.CpuID == cpuID {
return d.Socket return d.Socket
} }
@ -354,9 +347,8 @@ func GetHwthreadSocket(cpuID int) int {
// GetHwthreadNumaDomain gets the NUMA domain ID for a given hardware thread ID // GetHwthreadNumaDomain gets the NUMA domain ID for a given hardware thread ID
// In case hardware thread ID is not found -1 is returned // In case hardware thread ID is not found -1 is returned
func GetHwthreadNumaDomain(cpuID int) int { func GetHwthreadNumaDomain(cpuID int) int {
cpuData := CpuData() for i := range cache.CpuData {
for i := range cpuData { d := &cache.CpuData[i]
d := &cpuData[i]
if d.CpuID == cpuID { if d.CpuID == cpuID {
return d.NumaDomain return d.NumaDomain
} }
@ -367,9 +359,8 @@ func GetHwthreadNumaDomain(cpuID int) int {
// GetHwthreadDie gets the CPU die ID for a given hardware thread ID // GetHwthreadDie gets the CPU die ID for a given hardware thread ID
// In case hardware thread ID is not found -1 is returned // In case hardware thread ID is not found -1 is returned
func GetHwthreadDie(cpuID int) int { func GetHwthreadDie(cpuID int) int {
cpuData := CpuData() for i := range cache.CpuData {
for i := range cpuData { d := &cache.CpuData[i]
d := &cpuData[i]
if d.CpuID == cpuID { if d.CpuID == cpuID {
return d.Die return d.Die
} }
@ -380,9 +371,8 @@ func GetHwthreadDie(cpuID int) int {
// GetHwthreadCore gets the CPU core ID for a given hardware thread ID // GetHwthreadCore gets the CPU core ID for a given hardware thread ID
// In case hardware thread ID is not found -1 is returned // In case hardware thread ID is not found -1 is returned
func GetHwthreadCore(cpuID int) int { func GetHwthreadCore(cpuID int) int {
cpuData := CpuData() for i := range cache.CpuData {
for i := range cpuData { d := &cache.CpuData[i]
d := &cpuData[i]
if d.CpuID == cpuID { if d.CpuID == cpuID {
return d.Core return d.Core
} }