OnlineJudge/template/admin/monitor/monitor.html

<div class="col-md-9">
    <h1>服务器监控</h1>

    <div>
        <div>
            <h3>等待判题队列长度</h3>

            <div id="waiting-queue">
                <canvas class="line-chart" id="waiting-queue-chart"></canvas>
            </div>
        </div>
    </div>
<button class="btn btn-danger" id="clear-chart-data">清空图表数据</button>
    <script src="/static/js/app/admin/monitor/monitor.js"></script>
</div>