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118 lines
4.4 KiB
Markdown
118 lines
4.4 KiB
Markdown
Linux Pmap 命令 - 查看进程用了多少内存
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================================================================================
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Pmap 提供进程的内存映射，pmap命令显示一个或多个进程的内存状态。Pmap报告进程地址空间和内存状态信息。Pmap实际上是一个Sun OS命令，linux仅支持有限的功能。但是它还是对查看完整的进程地址空间很有帮助。检查[进程内存状态][1]我们需要PID或者运行的进程的唯一进程ID,我们可以在/proc或者常规命令比如top或ps得到它.
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### 语法或用法 ###
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#pmap PID
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或者
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#pmap [options] PID
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在输出中它显示全部的地址,kbytes,mode还有mapping。
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### 选项 ###
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-x extended显示扩展格式
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-d device显示设备格式
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-q quiet不显示header/footer行
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-V 显示版本信息
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### 单一进程内存状态 ###
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[root@info ~]# pmap 1013
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1013: /usr/sbin/sshd
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00110000 1480K r-x– /usr/lib/libcrypto.so.1.0.0
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00282000 80K rw— /usr/lib/libcrypto.so.1.0.0
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00296000 12K rw— [ anon ]
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00299000 36K r-x– /lib/libkrb5support.so.0.1
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002a2000 4K rw— /lib/libkrb5support.so.0.1
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002a3000 16K r-x– /lib/libplc4.so
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002a7000 4K rw— /lib/libplc4.so
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002ab000 88K r-x– /lib/libaudit.so.1.0.0
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002c1000 4K r—- /lib/libaudit.so.1.0.0
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002c2000 4K rw— /lib/libaudit.so.1.0.0
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002c3000 216K r-x– /lib/libgssapi_krb5.so.2.2
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002f9000 4K rw— /lib/libgssapi_krb5.so.2.2
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002fa000 808K r-x– /lib/libkrb5.so.3.3
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003c4000 24K rw— /lib/libkrb5.so.3.3
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003ca000 152K r-x– /lib/libk5crypto.so.3.1
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003f0000 4K rw— /lib/libk5crypto.so.3.1
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003f1000 92K r-x– /usr/lib/libnssutil3.so
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00738000 4K r—- /lib/libresolv-2.12.so
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00739000 4K rw— /lib/libresolv-2.12.so
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0073a000 8K rw— [ anon ]
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00825000 120K r-x– /lib/ld-2.12.so
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00843000 4K r—- /lib/ld-2.12.so
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00844000 4K rw— /lib/ld-2.12.so
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0090d000 32K r-x– /lib/libwrap.so.0.7.6
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00915000 4K rw— /lib/libwrap.so.0.7.6
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00948000 484K r-x– /usr/sbin/sshd
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009c1000 8K rw— /usr/sbin/sshd
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009c3000 20K rw— [ anon ]
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009e0000 92K r-x– /lib/libpthread-2.12.so
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009f7000 4K r—- /lib/libpthread-2.12.so
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total 8232K
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### 多进程内存状态 ###
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我们可以检查多进程内存通过插入多个PID。加入多个PID中间需要空格。
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pmap 1013 1217 1118
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### 扩展进程内存 ###
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[root@info ~]# pmap -x 1013
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1013: /usr/sbin/sshd
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Address Kbytes RSS Dirty Mode Mapping
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00110000 1480 92 0 r-x– libcrypto.so.1.0.0
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00282000 80 80 80 rw— libcrypto.so.1.0.0
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00296000 12 8 4 rw— [ anon ]
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00299000 36 0 0 r-x– libkrb5support.so.0.1
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002a2000 4 4 4 rw— libkrb5support.so.0.1
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002a3000 16 0 0 r-x– libplc4.so
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002a7000 4 4 4 rw— libplc4.so
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002ab000 88 4 0 r-x– libaudit.so.1.0.0
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002c1000 4 4 4 r—- libaudit.so.1.0.0
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002c2000 4 4 4 rw— libaudit.so.1.0.0
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002c3000 216 4 0 r-x– libgssapi_krb5.so.2.2
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002f9000 4 4 4 rw— libgssapi_krb5.so.2.2
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002fa000 808 4 0 r-x– libkrb5.so.3.3
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003c4000 24 24 24 rw— libkrb5.so.3.3
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003ca000 152 4 0 r-x– libk5crypto.so.3.1
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003f0000 4 4 4 rw— libk5crypto.so.3.1
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003f1000 92 0 0 r-x– libnssutil3.so
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00408000 12 12 12 rw— libnssutil3.so
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0040b000 12 0 0 r-x– libplds4.so
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0040e000 4 4 4 rw— libplds4.so
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——– ——- ——- ——- ——-
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total kB 8232 – – -
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这里的Address，Kbyte，Dirty，RSS，mode还有mapping包含在下面
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### 扩展和设备格式区域 ###
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Address: start address of map
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Kbytes: size of map in kilobytes
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RSS: resident set size in kilobytes
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Dirty: dirty pages (both shared and private) in kilobytes
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Mode: permissions on map: read, write, execute, shared, private (copy on write)
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Mapping: file backing the map, or ‘[ anon ]‘ for allocated memory, or ‘[ stack ]‘ for the program stack
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Offset: offset into the file
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Device: device name (major:minor)
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--------------------------------------------------------------------------------
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via: http://linoxide.com/linux-command/pmap-command/
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译者：[flsf](https://github.com/flsf) 校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
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[1]:http://www.linoxide.com/linux-shell-script/linux-memory-usage-program/
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