Hey!
Back in 2005 there was an article (http://blogs.kde.org/node/1445) about
memory measurement which basically stated that you cannot trust whatever ps
aux or KDE's system monitor tells you. The latter displays that information
anyway.
Ok, so if you as a user now claim that app x uses a huge amount of memory on
your system you are likely pointed to that or some similar article. Pretty
unsatisfying if you ask me. Alternatively you are pointed to the very easy to
use valgrind or similar tools.
So what tool/data is accepted to prove that a process does actually consume y
MB of memory? What about /proc/<PID>/smaps?
I found a script that summarises the data to something like this:
perl smem.pl 2400
VMSIZE: 746104 kb
RSS: 421044 kb total
5044 kb shared
4 kb private clean
415996 kb private dirty
If I understood correctly the private dirty bit is the "bad" part – so does
this prove that /usr/bin/akonadi_mixedmaildir_resource consumes a few hundred
MB or is this wrong again and it's only some MB not worth wondering about?
In case this does have some validity I would like to make the found script
more popular (userbase/techbase) in order to avoid useless top/ps aux
measurements but still give the users some easy to handle tool to prove their
case.
The script was mentioned here: http://bmaurer.blogspot.com/2006/03/memory-
usage-with-smaps.html
can be found here:
http://code.google.com/p/easymakeproject/source/browse/trunk/smem.pl?r=6
and its usage is:
1. Install the Linux::Smaps library in case it was not yet done:
sudo perl -MCPAN -e shell
cpan> install Linux::Smaps
2. Run the script with sudo perl smem.pl <PID>
Adding to the above summary it shows some more data which I appended to this
mail.
Sven
PRIVATE MAPPINGS
vmsize rss clean rss dirty file
474436 kb 0 kb 415224 kb [heap]
120 kb 0 kb 104 kb
56 kb 0 kb 52 kb /usr/lib64/libakonadi-kde.so.4.7.0
44 kb 0 kb 40 kb /usr/lib64/libQtCore.so.4.7.3
136 kb 0 kb 32 kb [stack]
72 kb 0 kb 28 kb /usr/lib64/libkdecore.so.5.7.0
252 kb 0 kb 20 kb /usr/lib64/libQtGui.so.4.7.3
28 kb 0 kb 20 kb /usr/lib64/libQtGui.so.4.7.3
20 kb 0 kb 20 kb /usr/lib64/libkmime.so.4.7.0
20 kb 0 kb 16 kb
16 kb 0 kb 16 kb /usr/lib64/libkdecore.so.5.7.0
156 kb 0 kb 12 kb /usr/lib64/libkdeui.so.5.7.0
12 kb 0 kb 12 kb /usr/lib64/libakonadi-kde.so.4.7.0
20 kb 0 kb 8 kb /usr/lib64/libX11.so.6.3.0
24 kb 0 kb 8 kb /usr/lib64/libQtNetwork.so.4.7.3
8 kb 0 kb 8 kb /usr/lib64/libQtNetwork.so.4.7.3
16 kb 0 kb 8 kb /lib64/libc-2.11.3.so
28 kb 0 kb 8 kb /usr/lib64/libkdeui.so.5.7.0
8 kb 0 kb 8 kb /usr/lib64/libakonadi-filestore.so.4.7.0
4 kb 0 kb 4 kb /usr/bin/akonadi_mixedmaildir_resource
4 kb 0 kb 4 kb /usr/bin/akonadi_mixedmaildir_resource
4 kb 0 kb 4 kb
/usr/lib64/kde4/akonadi_serializer_mail.so
4 kb 0 kb 4 kb
/usr/lib64/kde4/akonadi_serializer_mail.so
28 kb 0 kb 4 kb /usr/lib64/kde4/plugins/styles/oxygen.so
4 kb 0 kb 4 kb /usr/lib64/libXau.so.6.0.0
8 kb 0 kb 4 kb /lib64/libexpat.so.1.5.2
4 kb 0 kb 4 kb /lib64/libpcre.so.0.0.1
4 kb 0 kb 4 kb /lib64/libuuid.so.1.3.0
32 kb 0 kb 4 kb /usr/lib64/libxml2.so.2.7.8
8 kb 0 kb 4 kb /usr/lib64/libstreams.so.0.7.5
4 kb 0 kb 4 kb /usr/lib64/libxcb.so.1.1.0
4 kb 0 kb 4 kb /usr/lib64/libxcb.so.1.1.0
4 kb 0 kb 4 kb /lib64/libudev.so.0.10.0
4 kb 0 kb 4 kb /lib64/librt-2.11.3.so
4 kb 0 kb 4 kb /lib64/libgthread-2.0.so.0.2800.0
4 kb 0 kb 4 kb /lib64/libgthread-2.0.so.0.2800.0
4 kb 0 kb 4 kb /lib64/libdl-2.11.3.so
4 kb 0 kb 4 kb /lib64/libdl-2.11.3.so
4 kb 0 kb 4 kb /usr/lib64/libfam.so.0.0.0
4 kb 0 kb 4 kb /lib64/liblzma.so.5.0.0
4 kb 0 kb 4 kb /lib64/libbz2.so.1.0.6
4 kb 0 kb 4 kb /usr/lib64/libXext.so.6.4.0
4 kb 0 kb 4 kb /usr/lib64/libfontconfig.so.1.4.4
4 kb 0 kb 4 kb /usr/lib64/libXinerama.so.1.0.0
4 kb 0 kb 4 kb /usr/lib64/libXrandr.so.2.2.0
4 kb 0 kb 4 kb /usr/lib64/libXi.so.6.1.0
4 kb 0 kb 4 kb /lib64/libgobject-2.0.so.0.2800.0
20 kb 0 kb 4 kb /usr/lib64/libfreetype.so.6.6.2
4 kb 0 kb 4 kb /lib64/libz.so.1.2.5
4 kb 0 kb 4 kb /usr/lib64/libpng14.so.14.4.0
4 kb 0 kb 4 kb /lib64/libglib-2.0.so.0.2800.0
4 kb 0 kb 4 kb /lib64/libglib-2.0.so.0.2800.0
4 kb 0 kb 4 kb /usr/lib64/libXfixes.so.3.1.0
4 kb 0 kb 4 kb /usr/lib64/libXfixes.so.3.1.0
4 kb 0 kb 4 kb /usr/lib64/libXcursor.so.1.0.2
4 kb 0 kb 4 kb /usr/lib64/libXtst.so.6.1.0
4 kb 0 kb 4 kb /usr/lib64/libdbusmenu-qt.so.2.5.2
12 kb 0 kb 4 kb /usr/lib64/libattica.so.0.2.0
4 kb 0 kb 4 kb /usr/lib64/libICE.so.6.3.0
4 kb 0 kb 4 kb /usr/lib64/libSM.so.6.0.1
8 kb 0 kb 4 kb /usr/lib64/libsopranoclient.so.1.2.0
20 kb 0 kb 4 kb /usr/lib64/libsoprano.so.4.3.0
4 kb 0 kb 4 kb /usr/lib64/libkemoticons.so.4.7.0
4 kb 0 kb 4 kb /lib64/libm-2.11.3.so
4 kb 0 kb 4 kb /usr/lib64/libXrender.so.1.3.0
4 kb 0 kb 4 kb /lib64/libattr.so.1.1.0
4 kb 0 kb 4 kb /lib64/libacl.so.1.1.0
4 kb 0 kb 4 kb /usr/lib64/libksuseinstall.so.1
12 kb 0 kb 4 kb /usr/lib64/libstreamanalyzer.so.0.7.5
4 kb 0 kb 4 kb /usr/lib64/libX11.so.6.3.0
8 kb 0 kb 4 kb /usr/lib64/libQtSvg.so.4.7.3
4 kb 0 kb 4 kb /lib64/libdbus-1.so.3.5.3
4 kb 0 kb 4 kb /lib64/libdbus-1.so.3.5.3
8 kb 0 kb 4 kb /usr/lib64/libQtXml.so.4.7.3
4 kb 0 kb 4 kb
/usr/lib64/libakonadiprotocolinternals.so.1.6.0
4 kb 0 kb 4 kb
/usr/lib64/libakonadiprotocolinternals.so.1.6.0
76 kb 0 kb 4 kb /usr/lib64/libsolid.so.4.7.0
8 kb 0 kb 4 kb /usr/lib64/libQtSql.so.4.7.3
4 kb 0 kb 4 kb /lib64/libpthread-2.11.3.so
4 kb 0 kb 4 kb /lib64/libpthread-2.11.3.so
4 kb 0 kb 4 kb /lib64/libc-2.11.3.so
4 kb 0 kb 4 kb /lib64/libgcc_s.so.1
32 kb 0 kb 4 kb /usr/lib64/libstdc++.so.6.0.14
8 kb 0 kb 4 kb /usr/lib64/libstdc++.so.6.0.14
4 kb 0 kb 4 kb /usr/lib64/libQtCore.so.4.7.3
4 kb 0 kb 4 kb
4 kb 0 kb 4 kb
12 kb 0 kb 4 kb
12 kb 0 kb 4 kb /usr/lib64/libnepomuk.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libkpimutils.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libkmime.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libkmbox.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libkmbox.so.4.7.0
68 kb 0 kb 4 kb /usr/lib64/libkio.so.5.7.0
4 kb 0 kb 4 kb /usr/lib64/libQtDBus.so.4.7.3
4 kb 0 kb 4 kb /usr/lib64/libQtDBus.so.4.7.3
8 kb 0 kb 4 kb /usr/lib64/libakonadi-kmime.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libakonadi-kmime.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libakonadi-filestore.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libmaildir.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libmaildir.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libkmindexreader.so.4.7.0
4 kb 0 kb 4 kb /usr/lib64/libkmindexreader.so.4.7.0
4 kb 0 kb 4 kb
4 kb 0 kb 4 kb /lib64/ld-2.11.3.so
4 kb 0 kb 4 kb /lib64/ld-2.11.3.so
4 kb 0 kb 4 kb
300 kb 4 kb 0 kb /usr/bin/akonadi_mixedmaildir_resource
SHARED MAPPINGS
vmsize rss clean rss dirty file
10584 kb 900 kb 0 kb /usr/lib64/libQtGui.so.4.7.3
2604 kb 840 kb 0 kb /usr/lib64/libQtCore.so.4.7.3
2808 kb 576 kb 0 kb /usr/lib64/libkdecore.so.5.7.0
1880 kb 428 kb 0 kb /usr/lib64/libakonadi-kde.so.4.7.0
1424 kb 412 kb 0 kb /lib64/libc-2.11.3.so
472 kb 236 kb 0 kb /usr/lib64/libQtDBus.so.4.7.3
272 kb 204 kb 0 kb /lib64/libdbus-1.so.3.5.3
960 kb 128 kb 0 kb /lib64/libglib-2.0.so.0.2800.0
940 kb 124 kb 0 kb /usr/lib64/libstdc++.so.6.0.14
4332 kb 124 kb 0 kb /usr/lib64/libkdeui.so.5.7.0
1268 kb 116 kb 0 kb /usr/lib64/libX11.so.6.3.0
700 kb 92 kb 0 kb /usr/lib64/kde4/plugins/styles/oxygen.so
1192 kb 92 kb 0 kb /usr/lib64/libQtNetwork.so.4.7.3
92 kb 64 kb 0 kb /lib64/libpthread-2.11.3.so
344 kb 52 kb 0 kb /lib64/libm-2.11.3.so
120 kb 52 kb 0 kb /lib64/ld-2.11.3.so
112 kb 40 kb 0 kb /usr/lib64/liboxygenstyle.so.4.7.0
100 kb 40 kb 0 kb
/usr/lib64/libakonadiprotocolinternals.so.1.6.0
40 kb 32 kb 0 kb /usr/lib64/libXrender.so.1.3.0
188 kb 24 kb 0 kb
/usr/share/locale/de/LC_MESSAGES/kdeqt.mo
1328 kb 24 kb 0 kb /usr/lib64/libxml2.so.2.7.8
312 kb 24 kb 0 kb /lib64/libgobject-2.0.so.0.2800.0
112 kb 20 kb 0 kb /usr/lib64/libxcb.so.1.1.0
56 kb 20 kb 0 kb /lib64/libudev.so.0.10.0
32 kb 20 kb 0 kb /lib64/librt-2.11.3.so
20 kb 16 kb 0 kb /usr/lib64/libXfixes.so.3.1.0
1268 kb 16 kb 0 kb /usr/lib64/libsoprano.so.4.3.0
152 kb 12 kb 0 kb /usr/share/locale/de/LC_MESSAGES/kio4.mo
16 kb 12 kb 0 kb /lib64/libgthread-2.0.so.0.2800.0
268 kb 12 kb 0 kb /usr/lib64/libQtXml.so.4.7.3
864 kb 12 kb 0 kb /usr/lib64/libsolid.so.4.7.0
84 kb 12 kb 0 kb /lib64/libgcc_s.so.1
2648 kb 12 kb 0 kb /usr/lib64/libkio.so.5.7.0
12 kb 8 kb 0 kb /usr/lib64/gconv/UTF-16.so
156 kb 8 kb 0 kb /lib64/libexpat.so.1.5.2
228 kb 8 kb 0 kb /usr/lib64/libstreams.so.0.7.5
8 kb 8 kb 0 kb /lib64/libdl-2.11.3.so
148 kb 8 kb 0 kb /lib64/liblzma.so.5.0.0
72 kb 8 kb 0 kb /usr/lib64/libXext.so.6.4.0
212 kb 8 kb 0 kb /usr/lib64/libfontconfig.so.1.4.4
32 kb 8 kb 0 kb /usr/lib64/libXrandr.so.2.2.0
60 kb 8 kb 0 kb /usr/lib64/libXi.so.6.1.0
528 kb 8 kb 0 kb /usr/lib64/libfreetype.so.6.6.2
164 kb 8 kb 0 kb /usr/lib64/libpng14.so.14.4.0
40 kb 8 kb 0 kb /usr/lib64/libXcursor.so.1.0.2
216 kb 8 kb 0 kb /usr/lib64/libdbusmenu-qt.so.2.5.2
540 kb 8 kb 0 kb /usr/lib64/libattica.so.0.2.0
92 kb 8 kb 0 kb /usr/lib64/libICE.so.6.3.0
28 kb 8 kb 0 kb /usr/lib64/libSM.so.6.0.1
340 kb 8 kb 0 kb /usr/lib64/libsopranoclient.so.1.2.0
72 kb 8 kb 0 kb /usr/lib64/libksuseinstall.so.1
552 kb 8 kb 0 kb /usr/lib64/libstreamanalyzer.so.0.7.5
348 kb 8 kb 0 kb /usr/lib64/libQtSvg.so.4.7.3
816 kb 8 kb 0 kb /usr/lib64/libnepomuk.so.4.7.0
56 kb 8 kb 0 kb
/usr/share/locale/de/LC_MESSAGES/kdecalendarsystems.mo
12 kb 8 kb 0 kb
/usr/share/locale/de/LC_MESSAGES/solid_qt.mo
232 kb 4 kb 0 kb
/usr/share/locale/de/LC_MESSAGES/kdelibs4.mo
8 kb 4 kb 0 kb /usr/lib64/libXau.so.6.0.0
212 kb 4 kb 0 kb /lib64/libpcre.so.0.0.1
16 kb 4 kb 0 kb /lib64/libuuid.so.1.3.0
28 kb 4 kb 0 kb /usr/lib64/libfam.so.0.0.0
52 kb 4 kb 0 kb /lib64/libbz2.so.1.0.6
8 kb 4 kb 0 kb /usr/lib64/libXinerama.so.1.0.0
88 kb 4 kb 0 kb /lib64/libz.so.1.2.5
20 kb 4 kb 0 kb /usr/lib64/libXtst.so.6.1.0
16 kb 4 kb 0 kb /lib64/libattr.so.1.1.0
28 kb 4 kb 0 kb /lib64/libacl.so.1.1.0
464 kb 4 kb 0 kb /usr/lib64/libkmime.so.4.7.0
252 kb 4 kb 0 kb /usr/lib64/libakonadi-kmime.so.4.7.0
36 kb 4 kb 0 kb
/usr/share/locale/de/LC_MESSAGES/libakonadi.mo
252 kb 4 kb 0 kb /usr/lib/locale/de_DE.utf8/LC_CTYPE
8 kb 4 kb 0 kb /usr/share/locale-
bundle/de/LC_MESSAGES/kde4-openSUSE.mo
4 kb 4 kb 0 kb
/usr/share/locale/de/LC_MESSAGES/libphonon.mo
4 kb 4 kb 0 kb [vdso]
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