名称：
用法
选项含义
扩展格式和设备格式域：
?
1
2
3
4
5
6
7
8
Address: start address of map 映像起始地址
Kbytes: size of map in kilobytes 映像大小
RSS: resident set size in kilobytes 驻留集大小
Dirty: dirty pages (both shared and private) in kilobytes 脏页大小
Mode: permissions on map 映像权限: r=read, w=write, x=execute, s=shared, p=private (copy on write)
Mapping: file backing the map , or [ anon ] for allocated memory, or [ stack ] for the program stack. 映像支持文件,[anon]为已分配内存 [stack]为程序堆栈
Offset: offset into the file 文件偏移
Device: device name (major:minor) 设备名
举例：
查看进程1的设备格式
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
[root@C44 ~]# pmap -d 1
1: init [5]
Address Kbytes Mode Offset Device Mapping
00934000 88 r-x– 0000000000000000 008:00005 ld-2.3.4.so
0094a000 4 r—- 0000000000015000 008:00005 ld-2.3.4.so
0094b000 4 rw— 0000000000016000 008:00005 ld-2.3.4.so
0094e000 1188 r-x– 0000000000000000 008:00005 libc-2.3.4.so
00a77000 8 r—- 0000000000129000 008:00005 libc-2.3.4.so
00a79000 8 rw— 000000000012b000 008:00005 libc-2.3.4.so
00a7b000 8 rw— 0000000000a7b000 000:00000 [ anon ]
00a85000 52 r-x– 0000000000000000 008:00005 libsepol.so.1
00a92000 4 rw— 000000000000c000 008:00005 libsepol.so.1
00a93000 32 rw— 0000000000a93000 000:00000 [ anon ]
00d9d000 52 r-x– 0000000000000000 008:00005 libselinux.so.1
00daa000 4 rw— 000000000000d000 008:00005 libselinux.so.1
08048000 28 r-x– 0000000000000000 008:00005 init
0804f000 4 rw— 0000000000007000 008:00005 init
084e1000 132 rw— 00000000084e1000 000:00000 [ anon ]
b7f5d000 8 rw— 00000000b7f5d000 000:00000 [ anon ]
bffee000 72 rw— 00000000bffee000 000:00000 [ stack ]
ffffe000 4 —– 0000000000000000 000:00000 [ anon ]
mapped: 1700K writeable/private: 276K shared: 0K
[root@C44 ~]#
最后一行的值
mapped 表示该进程映射的虚拟地址空间大小，也就是该进程预先分配的虚拟内存大小，即ps出的vsz
writeable/private 表示进程所占用的私有地址空间大小，也就是该进程实际使用的内存大小
shared 表示进程和其他进程共享的内存大小
查看进程1的设备格式，不显示头尾行
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
[root@C44 ~]# pmap -d -q 1
1: init [5]
00934000 88 r-x– 0000000000000000 008:00005 ld-2.3.4.so
0094a000 4 r—- 0000000000015000 008:00005 ld-2.3.4.so
0094b000 4 rw— 0000000000016000 008:00005 ld-2.3.4.so
0094e000 1188 r-x– 0000000000000000 008:00005 libc-2.3.4.so
00a77000 8 r—- 0000000000129000 008:00005 libc-2.3.4.so
00a79000 8 rw— 000000000012b000 008:00005 libc-2.3.4.so
00a7b000 8 rw— 0000000000a7b000 000:00000 [ anon ]
00a85000 52 r-x– 0000000000000000 008:00005 libsepol.so.1
00a92000 4 rw— 000000000000c000 008:00005 libsepol.so.1
00a93000 32 rw— 0000000000a93000 000:00000 [ anon ]
00d9d000 52 r-x– 0000000000000000 008:00005 libselinux.so.1
00daa000 4 rw— 000000000000d000 008:00005 libselinux.so.1
08048000 28 r-x– 0000000000000000 008:00005 init
0804f000 4 rw— 0000000000007000 008:00005 init
084e1000 132 rw— 00000000084e1000 000:00000 [ anon ]
b7f5d000 8 rw— 00000000b7f5d000 000:00000 [ anon ]
bffee000 72 rw— 00000000bffee000 000:00000 [ stack ]
ffffe000 4 —– 0000000000000000 000:00000 [ anon ]
[root@C44 ~]#
查看进程1的扩展格式
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
[root@C44 ~]# pmap -x 1
1: init [5]
Address Kbytes RSS Anon Locked Mode Mapping
00934000 88 – – – r-x– ld-2.3.4.so
0094a000 4 – – – r—- ld-2.3.4.so
0094b000 4 – – – rw— ld-2.3.4.so
0094e000 1188 – – – r-x– libc-2.3.4.so
00a77000 8 – – – r—- libc-2.3.4.so
00a79000 8 – – – rw— libc-2.3.4.so
00a7b000 8 – – – rw— [ anon ]
00a85000 52 – – – r-x– libsepol.so.1
00a92000 4 – – – rw— libsepol.so.1
00a93000 32 – – – rw— [ anon ]
00d9d000 52 – – – r-x– libselinux.so.1
00daa000 4 – – – rw— libselinux.so.1
08048000 28 – – – r-x– init
0804f000 4 – – – rw— init
084e1000 132 – – – rw— [ anon ]
b7f5d000 8 – – – rw— [ anon ]
bffee000 72 – – – rw— [ stack ]
ffffe000 4 – – – —– [ anon ]
——– ——- ——- ——- ——-
total kB 1700 – – –
[root@C44 ~]#
循环显示进程3066的设备格式的最后1行，间隔2秒，
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
[root@C44 ~]# while true; do pmap -d 3066 | tail -1; sleep 2; done
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
mapped: 5412K writeable/private: 2028K shared: 0K
总结
以上所述是小编给大家介绍的Linux性能测试 pmap命令详解，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://www.cnblogs.com/txw1958/archive/2012/07/26/linux-pmap.html
声明： 猿站网有关资源均来自网络搜集与网友提供，任何涉及商业盈利目的的均不得使用，否则产生的一切后果将由您自己承担！ 本平台资源仅供个人学习交流、测试使用 所有内容请在下载后24小时内删除，制止非法恶意传播，不对任何下载或转载者造成的危害负任何法律责任！也请大家支持、购置正版！ 。本站一律禁止以任何方式发布或转载任何违法的相关信息访客发现请向站长举报，会员发帖仅代表会员个人观点，并不代表本站赞同其观点和对其真实性负责。本网站的资源部分来源于网络，如有侵权烦请发送邮件至：2697268773@qq.com进行处理。