diff --git a/res/test.html b/res/test.html
index 49134f6..91835e8 100644
--- a/res/test.html
+++ b/res/test.html
@@ -166,7 +166,9 @@ <h4>Scoring</h4>
                                 <h4>Message</h4>
                                 <p>${res.data.message}</p>
                                 <h4>Run Info</h4>
-                                <p>Time: ${res.data.time}, Memory: ${res.data.memory}</p>
+                                <p>Time: ${res.data.time}ms, Memory: ${
+                                res.data.memory
+                            }KB</p>
                              </div>`
                         )
                     if (res.type === 'JUDGE_PROGRESS')
@@ -256,10 +258,9 @@ <h4>State</h4>
                 card.className = 'mdc-card mdc-card--outlined card'
                 document.querySelector('.container').prepend(card)
                 mdc.ripple.MDCRipple.attachTo(body)
-                const linearProgress = new mdc.linearProgress.MDCLinearProgress(
+                mdcProgress[id] = new mdc.linearProgress.MDCLinearProgress(
                     document.getElementById(`progress-${id}`)
                 )
-                mdcProgress[id] = linearProgress
                 return card
             }
 
diff --git a/src/runner/cpp.ts b/src/runner/cpp.ts
index 5b41179..0529c84 100644
--- a/src/runner/cpp.ts
+++ b/src/runner/cpp.ts
@@ -46,7 +46,7 @@ export default function (
         const result = await execute(
             `p-${data.uid}`,
             getLimitString(
-                { cpuLimit: 6 },
+                { cpuLimit: 50 },
                 `g++ ${tmpPath}/main.cpp -o ${exePath} -O2 -Wall -lm --static -pipe -std=c++17`
             )
         )
diff --git a/src/runner/util.ts b/src/runner/util.ts
index aae371d..c82f84d 100644
--- a/src/runner/util.ts
+++ b/src/runner/util.ts
@@ -23,7 +23,7 @@ export function execute(
         const child = spawn(`su`, [userName, '-c', exePath], {
             stdio: ['pipe', 'pipe', 'pipe'],
         })
-        child.stdin.on('error', (err) => {
+        child.stdin.on('error', () => {
             resolve({
                 resultType: ResultType.stdioError,
                 code: -1,
@@ -31,7 +31,7 @@ export function execute(
                 stderr: '',
             })
         })
-        child.on('error', (err) => {
+        child.on('error', () => {
             resolve({
                 resultType: ResultType.stdioError,
                 code: -1,
@@ -40,9 +40,11 @@ export function execute(
             })
         })
 
-        let timeHandler: NodeJS.Timeout
+        let timeHandler: NodeJS.Timeout,
+            timeouted = false
         if (timeout)
             timeHandler = setTimeout(() => {
+                timeouted = true
                 child.kill()
                 resolve({
                     resultType: ResultType.timeLimitExceeded,
@@ -67,6 +69,7 @@ export function execute(
         })
 
         child.on('close', (code) => {
+            if (timeouted) return
             if (timeHandler) clearTimeout(timeHandler)
             resolve({
                 resultType: ResultType.normal,
@@ -125,7 +128,7 @@ export function getLimitString(
                   limit.memoryLimit * 1024
               };`
             : ''
-    }${limit.cpuLimit ? `cpulimit -l ${limit.cpuLimit} -- ` : ''}${command}`
+    }${limit.cpuLimit ? `cpulimit -i -l ${limit.cpuLimit} -- ` : ''}${command}`
 }
 
 export function executeJudge(
@@ -136,7 +139,7 @@ export function executeJudge(
     return execute(
         `p-${data.uid}`,
         getLimitString(
-            { memoryLimit: data.memoryLimit, cpuLimit: 6 },
+            { memoryLimit: data.memoryLimit, cpuLimit: 10 },
             `/usr/bin/time -f "%E|%M" ${exePath}`
         ),
         input,