QQ的内存一直增加怎么回事

页面:/news/view-661294/ | 耗时:0.5861 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=661294 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=661294 LIMIT 0,1
select * from tbl_Articles_sphinx where id=661294 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1123364,1108325,1083423,1106072,1126567,1108335,1078801,1116859,1109108,1052183,1115525,1066142,1092238,1095460,1111439,1063045,1128930,1062632,1131719,1105514,1047419,1073637,1103031,1057908,1106835,1066890,1075791,1129507,1079363,1099069) ORDER BY field (ArticleID,1123364,1108325,1083423,1106072,1126567,1108335,1078801,1116859,1109108,1052183,1115525,1066142,1092238,1095460,1111439,1063045,1128930,1062632,1131719,1105514,1047419,1073637,1103031,1057908,1106835,1066890,1075791,1129507,1079363,1099069)