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標(biāo)題: proc smaps 疑問(wèn) [打印本頁(yè)]

作者: Meets 時(shí)間: 2012-11-19 10:36
標(biāo)題: proc smaps 疑問(wèn)
$> more smaps
00c85000-00ce6000 rw-p 00785000 c7:55f2 150                            /...../mysql-5.1.50-linux-x86_64-glibc23/bin/mysqld
Size:             388 kB
Rss:             220 kB
Shared_Clean:       0 kB
Shared_Dirty:       0 kB
Private_Clean:    152 kB
Private_Dirty:    68 kB
Swap:                0 kB
Pss:             220 kB
00ce6000-00cfe000 rw-p 00ce6000 00:00 0 Size:             96 kB
Rss:                92 kB
Shared_Clean:       0 kB
Shared_Dirty:       0 kB
Private_Clean:    16 kB
Private_Dirty:    76 kB
Swap:                4 kB
Pss:                92 kB
0a768000-19501000 rw-p 0a768000 00:00 0                               [heap]
Size:          243300 kB
Rss:          151264 kB
Shared_Clean:       0 kB
Shared_Dirty:       0 kB
Private_Clean:    224 kB
Private_Dirty: 151040 kB
Swap:          75984 kB
Pss:          151264 kB

為什么加黑的那條記錄沒(méi)有顯示是和哪個(gè)文件對(duì)應(yīng)的嗎？這部分內(nèi)存時(shí)用來(lái)干嘛的？并且看起來(lái)也不是heap。  整個(gè)文件有很多這種情況，請(qǐng)指教。

作者: omycle 時(shí)間: 2012-11-21 10:49
Documentation/filesystems/proc.txt:

If the mapping is not associated with a file:

[heap]                = the heap of the program
[stack]                = the stack of the main process
[vdso]                = the "virtual dynamic shared object",
                        the kernel system call handler

or if empty, the mapping is anonymous.

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