{webmeng:if $huan_news==""/}
    你好！ 暂无信息，请浏览其他内容。
 {webmeng:else/}   
     {webmeng:section loop=$huan_news name=rs/}
 <a href="/cn/news/details?id={webmeng:$huan_news[rs].detailid/}&cid={webmeng:$huan_news[rs].id/}&catid={webmeng:$huan_news[rs].catid/}&areaid={webmeng:$huan_news[rs].areaid/}&lg=zh-CN" class="swiper-slide swiper-slide-prev" data-swiper-slide-index="1" style="width: 512px;">
<img src="{webmeng:$huan_news[rs].thumb/}">
<span><em>{webmeng:$huan_news[rs].title/}</em></span>
</a>
{webmeng:/section/}

 {webmeng:/if/} 

{webmeng:if $account["mobile"]==""/} 
                  
                                     
 <span><a href="/cn/login" style="color: #fff;
    display: flex;
    margin-left: 22px;
    width: 35px;
    height: 26px;
    border-radius: 13px;
    align-items: center;
    justify-content: center;background:;font-size: 14px;">
登录</a>
</span>
 <span><a href="/cn/reg" style="color: #fff;
    display: flex;
    margin-left: 22px;
    width: 35px;
    height: 26px;
    border-radius: 13px;
    align-items: center;
    justify-content: center;font-size: 14px;">
注册</a>
</span>
                   {webmeng:else/}
                   
                  
               <a href="/cn/account/" style="color:#fff;">{webmeng:$account.mobile/}</a>&nbsp;<span style="color:#ccc; font-size:12px;">|</span>
  &nbsp;<a href="/cn/Login/out?flowContext=eyJoaXN0b3J5RW50cmllc"   style="color:red; font-size:12px;width: 30px;
}
">
                    注销
                </a>
           
            
            
  
 
                   
 {webmeng:/if/}  

  {webmeng:foreach from=$groupbuy_recommend item=v/} 
        
        <li>
          <dl style=" background-image:url({webmeng:$v.thumb/})">
            <dt>{webmeng:$v.title/}</dt>
            <dd class="price"><span class="groupbuy-price">¥158.00</span><span class="buy-button"><a href="/groupbuy/detail_{webmeng:$v.id/}.html">立即团</a></span></dd>
            <dd class="time"><span class="sell">已售<em>0</em></span> <span class="time-remain" count_down="11588038"> <em time_id="d">134</em>天<em time_id="h">2</em>小时 <em time_id="m">53</em>分<em time_id="s">58</em>秒 </span></dd>
          </dl>
        </li>
        {webmeng:/foreach/} 

参考文档

Linux下做性能分析：perf

Google-Wide Profiling: A Continuous Profiling Infrastructure for Data Centers

Profiling concepts bookmark_border

What is continuous profiling?