超级管理员现在可在“组织与权限 → 运维与审计 → 系统性能”中直接查看：

请求量、5xx 比例、HTTP/数据库 P95
请求速率与延迟趋势
最慢接口排行
慢查询与数据库查询排行
Grafana 原始调用链入口

src/Jiaowu.Api/Controllers/OperationsController.cs

@@ -4,6 +4,7 @@ using Jiaowu.Api.Domain.Academic;
 using Jiaowu.Api.Domain.Identity;
 using Jiaowu.Api.Domain.System;
 using Jiaowu.Api.Infrastructure.Operations;
+using Jiaowu.Api.Infrastructure.Observability;
 using Jiaowu.Api.Infrastructure.Persistence;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
@@ -18,8 +19,27 @@ public sealed class OperationsController(
     AppDbContext db,
     OperationalHealthService healthService,
     DatabaseBackupService backupService,
+    PerformanceReportService performanceReportService,
     OperationsOptions options) : ControllerBase
 {
+    [HttpGet("performance")]
+    public async Task<ActionResult<PerformanceReport>> GetPerformance(
+        [FromQuery] string? range = "1h",
+        CancellationToken cancellationToken = default)
+    {
+        try
+        {
+            return Ok(await performanceReportService.GetAsync(
+                range,
+                cancellationToken));
+        }
+        catch (ArgumentOutOfRangeException)
+        {
+            return ValidationProblem(
+                "性能报表范围仅支持 15m、1h、24h 或 7d。");
+        }
+    }
+
     [HttpGet("summary")]
     public async Task<ActionResult<OperationsSummary>> GetSummary(
         CancellationToken cancellationToken)