optimize: high cpu

common/utils.go

@@ -13,6 +13,7 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"unsafe"
 )
 
 func OpenBrowser(url string) {
@@ -138,11 +139,12 @@ func GetUUID() string {
 const keyChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
 func init() {
-	rand.Seed(time.Now().UnixNano())
+	if !strings.Contains(runtime.Version(), "go1.2") { // go1.20之前版本需要全局 seed，其他插件无需再 seed
+		rand.Seed(time.Now().UnixNano()) //nolint: staticcheck
+	}
 }
 
 func GenerateKey() string {
-	rand.Seed(time.Now().UnixNano())
 	key := make([]byte, 48)
 	for i := 0; i < 16; i++ {
 		key[i] = keyChars[rand.Intn(len(keyChars))]
@@ -159,7 +161,6 @@ func GenerateKey() string {
 }
 
 func GetRandomString(length int) string {
-	rand.Seed(time.Now().UnixNano())
 	key := make([]byte, length)
 	for i := 0; i < length; i++ {
 		key[i] = keyChars[rand.Intn(len(keyChars))]
@@ -207,3 +208,10 @@ func String2Int(str string) int {
 	}
 	return num
 }
+
+// []byte only read, panic on append
+func StringToByteSlice(s string) []byte {
+	tmp1 := (*[2]uintptr)(unsafe.Pointer(&s))
+	tmp2 := [3]uintptr{tmp1[0], tmp1[1], tmp1[1]}
+	return *(*[]byte)(unsafe.Pointer(&tmp2))
+}

controller/relay-openai.go

@@ -12,7 +12,7 @@ import (
 )
 
 func openaiStreamHandler(c *gin.Context, resp *http.Response, relayMode int) (*OpenAIErrorWithStatusCode, string) {
-	responseText := ""
+	var responseTextBuilder strings.Builder
 	scanner := bufio.NewScanner(resp.Body)
 	scanner.Split(func(data []byte, atEOF bool) (advance int, token []byte, err error) {
 		if atEOF && len(data) == 0 {
@@ -29,6 +29,7 @@ func openaiStreamHandler(c *gin.Context, resp *http.Response, relayMode int) (*O
 	dataChan := make(chan string)
 	stopChan := make(chan bool)
 	go func() {
+		var streamItems []string
 		for scanner.Scan() {
 			data := scanner.Text()
 			if len(data) < 6 { // ignore blank line or wrong format
@@ -40,27 +41,33 @@ func openaiStreamHandler(c *gin.Context, resp *http.Response, relayMode int) (*O
 			dataChan <- data
 			data = data[6:]
 			if !strings.HasPrefix(data, "[DONE]") {
-				switch relayMode {
-				case RelayModeChatCompletions:
-					var streamResponse ChatCompletionsStreamResponse
-					err := json.Unmarshal([]byte(data), &streamResponse)
-					if err != nil {
-						common.SysError("error unmarshalling stream response: " + err.Error())
-						continue // just ignore the error
-					}
-					for _, choice := range streamResponse.Choices {
-						responseText += choice.Delta.Content
-					}
-				case RelayModeCompletions:
-					var streamResponse CompletionsStreamResponse
-					err := json.Unmarshal([]byte(data), &streamResponse)
-					if err != nil {
-						common.SysError("error unmarshalling stream response: " + err.Error())
-						continue
-					}
-					for _, choice := range streamResponse.Choices {
-						responseText += choice.Text
-					}
+				streamItems = append(streamItems, data)
+			}
+		}
+		streamResp := "[" + strings.Join(streamItems, ",") + "]"
+		switch relayMode {
+		case RelayModeChatCompletions:
+			var streamResponses []ChatCompletionsStreamResponseSimple
+			err := json.Unmarshal(common.StringToByteSlice(streamResp), &streamResponses)
+			if err != nil {
+				common.SysError("error unmarshalling stream response: " + err.Error())
+				return // just ignore the error
+			}
+			for _, streamResponse := range streamResponses {
+				for _, choice := range streamResponse.Choices {
+					responseTextBuilder.WriteString(choice.Delta.Content)
+				}
+			}
+		case RelayModeCompletions:
+			var streamResponses []CompletionsStreamResponse
+			err := json.Unmarshal(common.StringToByteSlice(streamResp), &streamResponses)
+			if err != nil {
+				common.SysError("error unmarshalling stream response: " + err.Error())
+				return // just ignore the error
+			}
+			for _, streamResponse := range streamResponses {
+				for _, choice := range streamResponse.Choices {
+					responseTextBuilder.WriteString(choice.Text)
 				}
 			}
 		}
@@ -85,7 +92,7 @@ func openaiStreamHandler(c *gin.Context, resp *http.Response, relayMode int) (*O
 	if err != nil {
 		return errorWrapper(err, "close_response_body_failed", http.StatusInternalServerError), ""
 	}
-	return nil, responseText
+	return nil, responseTextBuilder.String()
 }
 
 func openaiHandler(c *gin.Context, resp *http.Response, promptTokens int, model string) (*OpenAIErrorWithStatusCode, *Usage) {

controller/relay.go

@@ -226,6 +226,10 @@ type ChatCompletionsStreamResponse struct {
 	Choices []ChatCompletionsStreamResponseChoice `json:"choices"`
 }
 
+type ChatCompletionsStreamResponseSimple struct {
+	Choices []ChatCompletionsStreamResponseChoice `json:"choices"`
+}
+
 type CompletionsStreamResponse struct {
 	Choices []struct {
 		Text         string `json:"text"`

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/golang-jwt/jwt v3.2.2+incompatible
 	github.com/google/uuid v1.3.0
 	github.com/gorilla/websocket v1.5.0
-	github.com/pkoukk/tiktoken-go v0.1.5
+	github.com/pkoukk/tiktoken-go v0.1.6
 	golang.org/x/crypto v0.14.0
 	gorm.io/driver/mysql v1.4.3
 	gorm.io/driver/postgres v1.5.2

go.sum

@@ -118,8 +118,8 @@ github.com/pelletier/go-toml/v2 v2.0.1/go.mod h1:r9LEWfGN8R5k0VXJ+0BkIe7MYkRdwZO
 github.com/pelletier/go-toml/v2 v2.0.8 h1:0ctb6s9mE31h0/lhu+J6OPmVeDxJn+kYnJc2jZR9tGQ=
 github.com/pelletier/go-toml/v2 v2.0.8/go.mod h1:vuYfssBdrU2XDZ9bYydBu6t+6a6PYNcZljzZR9VXg+4=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
-github.com/pkoukk/tiktoken-go v0.1.5 h1:hAlT4dCf6Uk50x8E7HQrddhH3EWMKUN+LArExQQsQx4=
-github.com/pkoukk/tiktoken-go v0.1.5/go.mod h1:9NiV+i9mJKGj1rYOT+njbv+ZwA/zJxYdewGl6qVatpg=
+github.com/pkoukk/tiktoken-go v0.1.6 h1:JF0TlJzhTbrI30wCvFuiw6FzP2+/bR+FIxUdgEAcUsw=
+github.com/pkoukk/tiktoken-go v0.1.6/go.mod h1:9NiV+i9mJKGj1rYOT+njbv+ZwA/zJxYdewGl6qVatpg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=

main.go

@@ -6,6 +6,7 @@ import (
 	"github.com/gin-contrib/sessions"
 	"github.com/gin-contrib/sessions/cookie"
 	"github.com/gin-gonic/gin"
+	"net/http"
 	"one-api/common"
 	"one-api/controller"
 	"one-api/middleware"
@@ -13,6 +14,8 @@ import (
 	"one-api/router"
 	"os"
 	"strconv"
+
+	_ "net/http/pprof"
 )
 
 //go:embed web/build
@@ -30,6 +33,16 @@ func main() {
 	if common.DebugEnabled {
 		common.SysLog("running in debug mode")
 	}
+	if os.Getenv("ENABLE_PPROF") == "true" {
+		go func() {
+			err := http.ListenAndServe("0.0.0.0:8005", nil)
+			if err != nil {
+				common.FatalLog("pprof enabled failed: " + err.Error())
+			} else {
+				common.SysLog("pprof enabled")
+			}
+		}()
+	}
 	// Initialize SQL Database
 	err := model.InitDB()
 	if err != nil {