为什么在安全模式下运行很慢

页面:/news/view-2334242/ | 耗时:0.7567 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2334242 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2334242 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2334242 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1127107,137486,1121022,246854,1095930,1068824,1098545,1085118,1131467,577560,1461583,356769,1125381,1276242,1768222,1477863,1102618,650664,1065765,1131667,1131507,1045471,1117766,545095,1095255,1128147,1120847,1088425,279002,1008730) ORDER BY field (ArticleID,1127107,137486,1121022,246854,1095930,1068824,1098545,1085118,1131467,577560,1461583,356769,1125381,1276242,1768222,1477863,1102618,650664,1065765,1131667,1131507,1045471,1117766,545095,1095255,1128147,1120847,1088425,279002,1008730)