diff --git a/packages/a11y/index.ts b/packages/a11y/index.ts
index 4d9fc0fcf..e9b47505c 100644
--- a/packages/a11y/index.ts
+++ b/packages/a11y/index.ts
@@ -1,8 +1,10 @@
-import { Context, UserModel } from 'hydrooj';
+import { Context, Schema, UserModel } from 'hydrooj';
+import { startPerformanceTest } from './performance-test';
 
 export async function apply(ctx: Context) {
     // Auto authorize user 2 as super admin
     ctx.on('handler/after/UserRegisterWithCode#post', async (that) => {
         if (that.session.uid === 2) await UserModel.setSuperAdmin(2);
     });
+    ctx.addScript('performance-test', 'test', Schema.object({}), startPerformanceTest);
 }
diff --git a/packages/a11y/performance-test.ts b/packages/a11y/performance-test.ts
new file mode 100644
index 000000000..d95b98e1d
--- /dev/null
+++ b/packages/a11y/performance-test.ts
@@ -0,0 +1,252 @@
+/* eslint-disable no-await-in-loop */
+import {
+    ProblemModel, RecordModel, sleep, STATUS, yaml,
+} from 'hydrooj';
+
+const TESTS = {
+    'test1': `//Test 1
+#include<cstdio>
+
+using namespace std;
+
+int main(){
+    int a=1000000000,b=1;
+    while(a)b<<=1,a--;
+    printf("%d\\n",b);
+    return 0;
+}`,
+    'test2': `//Test 2
+#include<cstdio>
+
+using namespace std;
+const int MX=50000000;
+int p[MX],m[MX],pc;
+int main(){
+    for(int i=2;i<MX;i++){
+        if(!m[i])p[++pc]=m[i]=i;
+        static int k;
+        for(int j=1;j<=pc&&p[j]<=m[i]&&(k=p[j]*i)<MX;j++)m[k]=p[j];
+    }
+    int ans=0;
+    for(int i=1;i<=pc;i++)ans^=p[i];
+    printf("%d\\n",ans);
+    return 0;
+}`,
+    'test3': `
+//Test 3
+#include<cstdio>
+
+using namespace std;
+const int MX=1000;
+int G[MX][MX];
+int sed=0;
+inline int rand(){return sed=(sed*sed*73+sed*233+19260817)&0x0000ffff;}
+int main(){
+    for(int i=0;i<MX;i++)
+        for(int j=0;j<MX;j++)
+            G[i][j]=rand();
+    for(int i=0;i<MX;i++)
+        for(int j=0;j<MX;j++)
+            for(int k=0;k<MX;k++)
+                if(G[j][k]>G[j][i]+G[i][k])G[j][k]=G[j][i]+G[i][k];
+    int ans=0;
+    for(int i=0;i<MX;i++)
+        for(int j=0;j<MX;j++)
+            ans^=G[i][j];
+    printf("%d\\n",ans);
+    return 0;
+}`,
+    'test4': `//Test 4
+#include<cstdio>
+#include<algorithm>
+#include<set>
+
+using namespace std;
+
+const int MX=1000000;
+int sed=0;
+inline int rand(){return sed=(sed*sed*73+sed*233+19260817);}
+int main(){
+    set<int>S;
+    for(int i=0;i<MX;i++)S.insert(rand());
+    int ans=0;
+    for(set<int>::iterator it=S.begin();it!=S.end();it++)ans^=*it;
+    printf("%d\\n",ans);
+    return 0;
+}`,
+    'test6-1': `//Test 6-1
+#include<cstdio>
+
+using namespace std;
+const int MX=1<<25;
+int a[MX];
+
+inline unsigned int rand(){static unsigned int sed=0;return (sed=(sed*233+19260421))&(MX-1);}
+
+int main(){
+    for(int i=0;i<MX;i++)a[rand()]=i;
+    return 0;
+}`,
+    'test6-2': `//Test 6-2
+#include<cstdio>
+
+using namespace std;
+const int MX=1<<25;
+int a[MX];
+
+inline unsigned int rand(){static unsigned int sed=0;return (sed=(sed*(MX+1)+1025))&(MX-1);}
+
+int main(){
+    for(int i=0;i<MX;i++)a[rand()]=i;
+    return 0;
+}`,
+    'test6-3': `//Test 6-3
+#include<cstdio>
+
+using namespace std;
+const int MX=1<<25;
+int a[MX];
+
+inline unsigned int rand(){static unsigned int sed=0;return (sed=(sed*(MX+1)+1))&(MX-1);}
+
+int main(){
+    for(int i=0;i<MX;i++)a[rand()]=i;
+    return 0;
+}`,
+    'test7-1': `//Test 7-1
+#include<cstdio>
+
+using namespace std;
+typedef unsigned long long ull;
+
+#define P 1000000007
+const int MX=100000000;
+
+int main(){
+    ull ans=1;
+    for(int i=1;i<MX;i++)ans=ans*i%P;
+    printf("%llu\\n",ans);
+    return 0;
+}`,
+    'test7-2': `//Test 7-2
+#include<cstdio>
+
+using namespace std;
+typedef unsigned long long ull;
+
+int P=1000000007;
+const int MX=100000000;
+
+int main(){
+    ull ans=1;
+    for(int i=1;i<MX;i++)ans=ans*i%P;
+    printf("%llu\\n",ans);
+    return 0;
+}`,
+    'test8': `//Test 8
+#include<cstdio>
+
+using namespace std;
+
+const int MX=20000000;
+
+int main(){
+    double ans=0.61234567898765,t=1,s=0;
+    for(int i=1;i<MX;i++)s+=(t*=ans);
+    printf("%f\\n",s);
+    return 0;
+}`,
+    'test9-1': `//Test 9-1
+#include<cstdio>
+
+using namespace std;
+typedef unsigned int uint;
+
+const int MX=1<<10;
+uint a[MX][MX],b[MX][MX];
+
+inline uint rand(){static unsigned int sed=0;return (sed=(sed*233+19260421))&(MX-1);}
+
+int main(){
+    register int i,j,k;
+    for(i=0;i<MX;i++)
+        for(j=0;j<MX;j++)
+            a[i][j]=rand();
+    #define A(t) (b[i][k+t]+=a[i][j]*a[j][k+t])
+    for(i=0;i<MX;i++)
+        for(j=0;j<MX;j++)
+            for(k=0;k<MX;k++)
+                A(0);
+    #undef A
+    uint s;
+    for(i=0;i<MX;i++)
+        for(j=0;j<MX;j++)
+            s+=a[i][j];
+    printf("%u\\n",s);
+    return 0;
+}`,
+    'test9-2': `//Test 9-2
+#include<cstdio>
+
+using namespace std;
+typedef unsigned int uint;
+
+const int MX=1<<10;
+uint a[MX][MX],b[MX][MX];
+
+inline uint rand(){static unsigned int sed=0;return (sed=(sed*233+19260421))&(MX-1);}
+
+int main(){
+    register int i,j,k;
+    for(i=0;i<MX;i++)
+        for(j=0;j<MX;j++)
+            a[i][j]=rand();
+    #define A(t) (b[i][k+t]+=a[i][j]*a[j][k+t])
+    for(i=0;i<MX;i++)
+        for(j=0;j<MX;j++)
+            for(k=0;k<MX;k+=8)
+                A(0),A(1),A(2),A(3),A(4),A(5),A(6),A(7);
+    #undef A
+    uint s;
+    for(i=0;i<MX;i++)
+        for(j=0;j<MX;j++)
+            s+=a[i][j];
+    printf("%u\\n",s);
+    return 0;
+}`,
+};
+
+export async function startPerformanceTest(args, report) {
+    const docId = (await ProblemModel.get('system', 'PTEST'))?.docId
+        || await ProblemModel.add('system', 'PTEST', 'Performance Test', 'test only', 1, [], { hidden: true });
+    await ProblemModel.addTestdata('system', docId, '1.in', Buffer.from('1'));
+    await ProblemModel.addTestdata('system', docId, '1.out', Buffer.from(''));
+    await ProblemModel.addTestdata('system', docId, 'config.yaml', Buffer.from(yaml.dump({
+        time: '3s',
+        memory: '256m',
+        cases: new Array(20).fill({
+            input: '1.in',
+            output: '1.out',
+        }),
+    })));
+    await Promise.all(Object.keys(TESTS).map(async (key) => {
+        const id = await RecordModel.add('system', docId, 1, 'cc.cc14o2', TESTS[key], true);
+        while ([
+            STATUS.STATUS_WAITING, STATUS.STATUS_JUDGING, STATUS.STATUS_FETCHED, STATUS.STATUS_COMPILING,
+        ].includes((await RecordModel.get('system', id))?.status)) {
+            await sleep(500);
+        }
+        const result = await RecordModel.get('system', id);
+        if (result.status !== STATUS.STATUS_ACCEPTED && result.status !== STATUS.STATUS_WRONG_ANSWER) {
+            report({ message: `Test ${key} failed (${id}) ${result.status}` });
+        }
+        const timeArr = result.testCases.map((i) => i.time);
+        const avgTime = Math.sum(...timeArr) / 20;
+        report({ message: '' });
+        report({ message: `Test ${key} Avg: ${Math.floor(avgTime)}` });
+        report({ message: `Max: ${Math.floor(Math.max(...timeArr))} / Min: ${Math.floor(Math.min(...timeArr))}` });
+        report({ message: `Variance: ${Math.floor(Math.sum(...timeArr.map((i) => (i - avgTime) ** 2)) / 20)}` });
+        report({ message: '' });
+    }));
+    return true;
+}