首先将以下代码加到themes/handsome/libs/Content.php中放在class Content{}之前

/**
     * 访问总量
     */
     function theAllViews(){
             $db = Typecho_Db::get();
             $row = $db->fetchAll('SELECT SUM(VIEWS) FROM `typecho_contents`');
                 echo number_format($row[0]['SUM(VIEWS)']);
     }

    /**
     * 响应时间
     */
    function timer_start() {
        global $timestart;
        $mtime = explode( ' ', microtime()  );
        $timestart = $mtime[1] + $mtime[0];
        return true; 
    }
    timer_start();
    function timer_stop( $display = 0, $precision = 3  ) {
        global $timestart, $timeend;
        $mtime = explode( ' ', microtime()  );
        $timeend = $mtime[1] + $mtime[0];
        $timetotal = number_format( $timeend - $timestart, $precision  );
        $r = $timetotal < 1 ? $timetotal * 1000 . " ms" : $timetotal . " s";
        if ( $display  ) {
            echo $r;
        }
        return $r;
    }

sidebar.php添加代码

<li class="list-group-item text-second"><span class="blog-info-icons"> <i data-feather="user"></i></span><span class="badge pull-right"><?php echo theAllViews();?></span><?php _me("访客总数") ?></li>
<li class="list-group-item text-second"><span class="blog-info-icons"> <i data-feather="clock"></i></span> <span class="badge pull-right"><?php echo timer_stop();?></span><?php _me("响应耗时") ?></li>