diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index 932f4c886..0cd8146b4 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.39.24",
+    "version": "2.39.25",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/handler/judge.ts b/packages/hydrooj/src/handler/judge.ts
index 37066dd51..76e4cd306 100644
--- a/packages/hydrooj/src/handler/judge.ts
+++ b/packages/hydrooj/src/handler/judge.ts
@@ -1,5 +1,4 @@
 import { ObjectID } from 'mongodb';
-import tx2 from 'tx2';
 import { JudgeResultBody, RecordDoc, TestCase } from '../interface';
 import difficultyAlgorithm from '../lib/difficulty';
 import { Logger } from '../logger';
@@ -20,11 +19,6 @@ import {
 import { sleep } from '../utils';
 
 const logger = new Logger('judge');
-const judgeCount = tx2.meter({
-    name: 'judge/min',
-    samples: 60,
-    timeframe: 120,
-});
 
 export async function postJudge(rdoc: RecordDoc) {
     if (typeof rdoc.input === 'string') return;
@@ -86,7 +80,6 @@ export async function next(body: JudgeResultBody) {
 }
 
 export async function end(body: JudgeResultBody) {
-    judgeCount.mark();
     if (body.rid) body.rid = new ObjectID(body.rid);
     let rdoc = await record.get(body.rid);
     if (!rdoc) return;
diff --git a/packages/hydrooj/src/service/monitor.ts b/packages/hydrooj/src/service/monitor.ts
index 8aa403c27..eae184c3f 100644
--- a/packages/hydrooj/src/service/monitor.ts
+++ b/packages/hydrooj/src/service/monitor.ts
@@ -1,8 +1,10 @@
 import crypto from 'crypto';
 import { dump } from 'js-yaml';
 import superagent from 'superagent';
+import tx2 from 'tx2';
 import type { StatusUpdate } from '@hydrooj/utils/lib/sysinfo';
 import * as sysinfo from '@hydrooj/utils/lib/sysinfo';
+import { Time } from '@hydrooj/utils/lib/utils';
 import { Logger } from '../logger';
 import * as bus from './bus';
 import db from './db';
@@ -96,6 +98,20 @@ if (process.env.NODE_APP_INSTANCE === '0') {
             feedback();
             setInterval(update, 60 * 1000);
         });
+        const taskColl = db.collection('task');
+        let taskCount = await taskColl.find().count();
+        const recordColl = db.collection('record');
+        let recordCount = await recordColl.find({
+            _id: { $gte: Time.getObjectID(new Date(Date.now() - 60 * 1000)) },
+        }).count();
+        tx2.metric('task', () => taskCount);
+        tx2.metric('submission', () => recordCount);
+        setInterval(() => {
+            taskColl.find().count().then((c) => { taskCount = c; });
+            recordColl.find({
+                _id: { $gte: Time.getObjectID(new Date(Date.now() - 60 * 1000)) },
+            }).count().then((c) => { recordCount = c; });
+        }, 1000);
     });
 }