6g运行内存为什么只有2g多

页面:/news/view-2641964/ | 耗时:0.1971 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=2641964 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2641964 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2641964 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2905579,1092888,3026063,1869166,2480047,3244060,1528325,2783587,1128215,1127481,1112214,1093923,1276970,3331188,109595,1078885,3217009,1860889,323832,1078380,1482001,1521419,1127281,1063565,1688548,1093993,1071239,2514370,1097121,1074312) ORDER BY field (ArticleID,2905579,1092888,3026063,1869166,2480047,3244060,1528325,2783587,1128215,1127481,1112214,1093923,1276970,3331188,109595,1078885,3217009,1860889,323832,1078380,1482001,1521419,1127281,1063565,1688548,1093993,1071239,2514370,1097121,1074312)