Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/service/openai_content_session_seed_benchmark_test.go

@@ -0,0 +1,29 @@
+package service
+
+import (
+	"strings"
+	"testing"
+)
+
+var benchmarkOpenAIContentSessionSeed string
+
+func BenchmarkDeriveOpenAIContentSessionSeedLargeBody(b *testing.B) {
+	largeHistory := strings.Repeat("payload", 1<<17)
+	tests := []struct {
+		name string
+		body []byte
+	}{
+		{name: "ChatCompletions", body: []byte(`{"model":"gpt-5.4","tools":[{"type":"function","function":{"name":"lookup"}}],"messages":[{"role":"system","content":"Be concise."},{"role":"user","content":"Hello"},{"role":"assistant","content":"` + largeHistory + `"},{"role":"user","content":"Follow-up"}]}`)},
+		{name: "Responses", body: []byte(`{"model":"gpt-5.4","instructions":"Be concise.","tools":[{"type":"function","name":"lookup"}],"input":[{"role":"system","content":"System prompt"},{"role":"user","content":"Hello"},{"role":"assistant","content":"` + largeHistory + `"}]}`)},
+	}
+
+	for _, test := range tests {
+		b.Run(test.name, func(b *testing.B) {
+			b.ReportAllocs()
+			b.SetBytes(int64(len(test.body)))
+			for range b.N {
+				benchmarkOpenAIContentSessionSeed = deriveOpenAIContentSessionSeed(test.body)
+			}
+		})
+	}
+}