pmap is a tool to check memory usage , check memory mapping of processes.
Of course , we can do the same thing by checking under /proc/PID directory , but we can analyze memory mapping easily by using pmap.
In case of Fedroa 17 , pmap has been installed by default , so I don’t need to install pmap via yum.
| [root@f17-64 ~]# cat /etc/fedora-release Fedora release 17 (Beefy Miracle) [root@f17-64 ~]# pmap -V pmap (procps version 3.2.8) |
[ usage ]
pmap PID
pmap -x PID
-x : extended Show the extended format
[ sample outputs ]
memory mapping of unbound process
| [root@f17-64 ~]# pmap -x `pgrep unbound` 1125: /usr/sbin/unbound Address Kbytes RSS Dirty Mode Mapping 0000000000400000 700 452 0 r-x-- unbound 00000000006ae000 4 4 4 r---- unbound 00000000006af000 20 8 8 rw--- unbound 00000000006b4000 4 4 4 rw--- [ anon ] 0000000001f0a000 400 380 380 rw--- [ anon ] 0000000001f6e000 9724 9460 9460 rw--- [ anon ] 0000003652e00000 128 28 0 r-x-- ld-2.15.so 000000365301f000 4 4 4 r---- ld-2.15.so 0000003653020000 4 4 4 rw--- ld-2.15.so 0000003653021000 4 4 4 rw--- [ anon ] 0000003653200000 1712 472 0 r-x-- libc-2.15.so 00000036533ac000 2048 0 0 ----- libc-2.15.so 00000036535ac000 16 16 8 r---- libc-2.15.so 00000036535b0000 8 8 8 rw--- libc-2.15.so 00000036535b2000 20 20 20 rw--- [ anon ] 0000003653600000 88 60 0 r-x-- libpthread-2.15.so 0000003653616000 2048 0 0 ----- libpthread-2.15.so 0000003653816000 4 4 4 r---- libpthread-2.15.so 0000003653817000 4 4 4 rw--- libpthread-2.15.so 0000003653818000 16 4 4 rw--- [ anon ] 0000003653a00000 12 4 0 r-x-- libdl-2.15.so 0000003653a03000 2044 0 0 ----- libdl-2.15.so 0000003653c02000 4 4 4 r---- libdl-2.15.so 0000003653c03000 4 4 4 rw--- libdl-2.15.so 0000003653e00000 1000 0 0 r-x-- libm-2.15.so 0000003653efa000 2044 0 0 ----- libm-2.15.so 00000036540f9000 4 4 4 r---- libm-2.15.so 00000036540fa000 4 4 4 rw--- libm-2.15.so 0000003654200000 92 56 0 r-x-- libz.so.1.2.5 0000003654217000 2044 0 0 ----- libz.so.1.2.5 0000003654416000 4 4 4 rw--- libz.so.1.2.5 0000003654600000 28 12 0 r-x-- librt-2.15.so 0000003654607000 2044 0 0 ----- librt-2.15.so 0000003654806000 4 4 4 r---- librt-2.15.so 0000003654807000 4 4 4 rw--- librt-2.15.so 0000003654a00000 120 0 0 r-x-- libselinux.so.1 0000003654a1e000 2044 0 0 ----- libselinux.so.1 0000003654c1d000 4 4 4 r---- libselinux.so.1 0000003654c1e000 4 4 4 rw--- libselinux.so.1 0000003654c1f000 8 4 4 rw--- [ anon ] 0000003654e00000 88 0 0 r-x-- libresolv-2.15.so 0000003654e16000 2044 0 0 ----- libresolv-2.15.so 0000003655015000 4 4 4 r---- libresolv-2.15.so 0000003655016000 4 4 4 rw--- libresolv-2.15.so 0000003655017000 8 0 0 rw--- [ anon ] 0000003655200000 320 172 0 r-x-- libldns.so.1.6.16 0000003655250000 2044 0 0 ----- libldns.so.1.6.16 000000365544f000 4 4 4 r---- libldns.so.1.6.16 0000003655450000 24 24 16 rw--- libldns.so.1.6.16 0000003655600000 1456 12 0 r-x-- libpython2.7.so.1.0 000000365576c000 2048 0 0 ----- libpython2.7.so.1.0 000000365596c000 4 4 4 r---- libpython2.7.so.1.0 000000365596d000 244 136 136 rw--- libpython2.7.so.1.0 00000036559aa000 64 0 0 rw--- [ anon ] 0000003656a00000 84 0 0 r-x-- libgcc_s-4.7.2-20120921.so.1 0000003656a15000 2044 0 0 ----- libgcc_s-4.7.2-20120921.so.1 0000003656c14000 4 4 4 rw--- libgcc_s-4.7.2-20120921.so.1 0000003657e00000 272 112 0 r-x-- libevent-2.0.so.5.1.6 0000003657e44000 2048 0 0 ----- libevent-2.0.so.5.1.6 0000003658044000 4 4 4 r---- libevent-2.0.so.5.1.6 0000003658045000 4 4 4 rw--- libevent-2.0.so.5.1.6 0000003658046000 4 0 0 rw--- [ anon ] 000000365e600000 1488 660 0 r-x-- libcrypto.so.1.0.0j 000000365e774000 2048 0 0 ----- libcrypto.so.1.0.0j 000000365e974000 136 120 20 rw--- libcrypto.so.1.0.0j 000000365e996000 16 12 12 rw--- [ anon ] 0000003660200000 12 4 0 r-x-- libcom_err.so.2.1 0000003660203000 2044 0 0 ----- libcom_err.so.2.1 0000003660402000 4 4 4 r---- libcom_err.so.2.1 0000003660403000 4 4 4 rw--- libcom_err.so.2.1 0000003662200000 12 0 0 r-x-- libkeyutils.so.1.4 0000003662203000 2044 0 0 ----- libkeyutils.so.1.4 0000003662402000 4 4 4 rw--- libkeyutils.so.1.4 0000003662a00000 160 4 0 r-x-- libk5crypto.so.3.1 0000003662a28000 2048 0 0 ----- libk5crypto.so.3.1 0000003662c28000 4 4 4 r---- libk5crypto.so.3.1 0000003662c29000 4 4 4 rw--- libk5crypto.so.3.1 0000003662c2a000 4 0 0 rw--- [ anon ] 0000003662e00000 868 4 0 r-x-- libkrb5.so.3.3 0000003662ed9000 2048 0 0 ----- libkrb5.so.3.3 00000036630d9000 40 8 4 r---- libkrb5.so.3.3 00000036630e3000 8 8 8 rw--- libkrb5.so.3.3 0000003663200000 260 4 0 r-x-- libgssapi_krb5.so.2.2 0000003663241000 2048 0 0 ----- libgssapi_krb5.so.2.2 0000003663441000 4 4 4 r---- libgssapi_krb5.so.2.2 0000003663442000 8 8 8 rw--- libgssapi_krb5.so.2.2 0000003663600000 40 0 0 r-x-- libkrb5support.so.0.1 000000366360a000 2044 0 0 ----- libkrb5support.so.0.1 0000003663809000 4 4 4 r---- libkrb5support.so.0.1 000000366380a000 4 4 4 rw--- libkrb5support.so.0.1 0000003666200000 336 176 0 r-x-- libssl.so.1.0.0j 0000003666254000 2044 0 0 ----- libssl.so.1.0.0j 0000003666453000 32 32 16 rw--- libssl.so.1.0.0j 0000003667200000 8 0 0 r-x-- libutil-2.15.so 0000003667202000 2044 0 0 ----- libutil-2.15.so 0000003667401000 4 4 4 r---- libutil-2.15.so 0000003667402000 4 4 4 rw--- libutil-2.15.so 00007f924600f000 236 236 236 rw--- [ anon ] 00007f924608b000 48 16 0 r-x-- libnss_files-2.15.so 00007f9246097000 2044 0 0 ----- libnss_files-2.15.so 00007f9246296000 4 4 4 r---- libnss_files-2.15.so 00007f9246297000 4 4 4 rw--- libnss_files-2.15.so 00007f9246298000 304 304 304 rw--- [ anon ] 00007f92462fc000 4 4 4 rw--- [ anon ] 00007fffda00e000 132 32 32 rw--- [ stack ] 00007fffda03f000 4 4 0 r-x-- [ anon ] ffffffffff600000 4 0 0 r-x-- [ anon ] ---------------- ------ ------ ------ total kB 65956 13216 10828 |
memory mapping of httpd processes
| [root@f17-64 ~]# pmap -x `pgrep httpd` | head -10 4475: /usr/sbin/httpd -k start Address Kbytes RSS Dirty Mode Mapping 00007fe85af11000 8 8 0 r-x-- apr_ldap-1.so 00007fe85af13000 2044 0 0 ----- apr_ldap-1.so 00007fe85b112000 4 4 4 r---- apr_ldap-1.so 00007fe85b113000 4 4 4 rw--- apr_ldap-1.so 00007fe85b114000 12 8 0 r-x-- libnss_myhostname.so.2 00007fe85b117000 2044 0 0 ----- libnss_myhostname.so.2 00007fe85b316000 4 4 4 r---- libnss_myhostname.so.2 00007fe85b317000 4 4 4 rw--- libnss_myhostname.so.2 |
| [root@f17-64 ~]# pmap `pgrep httpd` | egrep ":|total" 4475: /usr/sbin/httpd -k start total 183136K 4476: /usr/sbin/httpd -k start total 183136K 4477: /usr/sbin/httpd -k start total 183136K 4478: /usr/sbin/httpd -k start total 183136K 4479: /usr/sbin/httpd -k start total 183136K 4480: /usr/sbin/httpd -k start total 183136K 4481: /usr/sbin/httpd -k start total 183136K 4482: /usr/sbin/httpd -k start total 183136K 4483: /usr/sbin/httpd -k start total 183136K 5253: /usr/sbin/httpd -k start total 183136K 5254: /usr/sbin/httpd -k start total 183136K 5255: /usr/sbin/httpd -k start total 183136K 5256: /usr/sbin/httpd -k start total 183136K 5257: /usr/sbin/httpd -k start total 183136K 5258: /usr/sbin/httpd -k start total 183136K 5259: /usr/sbin/httpd -k start total 183136K 5260: /usr/sbin/httpd -k start total 183136K 5261: /usr/sbin/httpd -k start total 183136K 5262: /usr/sbin/httpd -k start total 183136K 5263: /usr/sbin/httpd -k start total 183136K 5264: /usr/sbin/httpd -k start total 183136K 5265: /usr/sbin/httpd -k start total 183136K 5266: /usr/sbin/httpd -k start total 183136K 5267: /usr/sbin/httpd -k start total 183136K 5271: /usr/sbin/httpd -k start total 183136K 5272: /usr/sbin/httpd -k start total 183136K 5273: /usr/sbin/httpd -k start total 183136K 5274: /usr/sbin/httpd -k start total 183136K 5275: /usr/sbin/httpd -k start total 183136K 5276: /usr/sbin/httpd -k start total 183136K |
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