Misurare la quantità di memoria utilizzata da un programma a run-time.

[Vincenzo1968]

Come si può fare? Che strumenti si possono utilizzare?

Ovviamente si dispone soltanto dell'eseguibile senza i sorgenti.

[sottovento]

Originariamente inviato da Vincenzo1968

Come si può fare? Che strumenti si possono utilizzare?

Ovviamente si dispone soltanto dell'eseguibile senza i sorgenti.

Qualcosa oltre i "soliti" strumenti, intendi? Per esempio, sotto Windows uso spesso Process Explorer (http://technet.microsoft.com/en-us/s.../bb896653.aspx) che ti da' un bel po di informazioni. C'e' qualcosa di simile, probabilmente anche piu' sofisticato sotto i sistemi *nix.

Stai cercando questo?

[Vincenzo1968]

Originariamente inviato da sottovento

Qualcosa oltre i "soliti" strumenti, intendi? Per esempio, sotto Windows uso spesso Process Explorer (http://technet.microsoft.com/en-us/s.../bb896653.aspx) che ti da' un bel po di informazioni. C'e' qualcosa di simile, probabilmente anche piu' sofisticato sotto i sistemi *nix.

Stai cercando questo?

Minchia! Mark Russinovich!
Grazie mille per il link!

Anche coi soliti strumenti(che non conosco ).

Mi servirebbe qualcosa anche per Linux.

[The_ouroboros]

ps -ax (o ancor meglio ps -ef )e top soco tuoi amici

[Vincenzo1968]

Originariamente inviato da The_ouroboros

ps -ax (o ancor meglio ps -ef )e top soco tuoi amici

Thanks a lot!

Lo provo subito.

[Vincenzo1968]

Come lo uso? Se ho un eseguibile chiamato "myapp" come faccio a misurare la memoria utilizzata?

[Vincenzo1968]

.

Usage:
ps [options]

Basic options:
-A, -e all processes
-a all with tty, except session leaders
a all with tty, including other users
-d all except session leaders
-N, --deselect negate selection
r only running processes
T all processes on this terminal
x processes without controlling ttys

Selection by list:
-C <command> command name
-G, --Group <gid> real group id or name
-g, --group <group> session or effective group name
-p, --pid <pid> process id
--ppid <pid> select by parent process id
-s, --sid <session> session id
-t, t, --tty <tty> terminal
-u, U, --user <uid> effective user id or name
-U, --User <uid> real user id or name

selection <arguments> take either:
comma-separated list e.g. '-u root,nobody' or
blank-separated list e.g. '-p 123 4567'

Output formats:
-F extra full
-f full-format, including command lines
f, --forest ascii art process tree
-H show process hierarchy
-j jobs format
j BSD job control format
-l long format
l BSD long format
-M, Z add security data (for SE Linux)
-O <format> preloaded with default columns
O <format> as -O, with BSD personality
-o, o, --format <format>
user defined format
s signal format
u user-oriented format
v virtual memory format
X register format
-y do not show flags, show rrs vs. addr (used with -l)
--context display security context (for SE Linux)
--headers repeat header lines, one per page
--no-headers do not print header at all
--cols, --columns, --width <num>
set screen width
--rows, --lines <num>
set screen height

Show threads:
H as if they where processes
-L possibly with LWP and NLWP columns
-m, m after processes
-T possibly with SPID column

Miscellaneous options:
-c show scheduling class with -l option
c show true command name
e show the environment after command
k, --sort specify sort order as: [+|-]key[,[+|-]key[,...]]
L list format specifiers
n display numeric uid and wchan
S, --cumulative include some dead child process data
-y do not show flags, show rss (only with -l)
-V, V, --version display version information and exit
-w, w unlimited output width

--help <simple|list|output|threads|misc|all>
display help and exit

[The_ouroboros]

su top, lo digiti su cli e poi cerchi a occhio dov'è il prog. (htop è più grafico)
Trovi info su memoria e cpu occupate.
Su ps vedi info su pid e interdipendenze, con ps ef

[The_ouroboros]

e con strace (o truss) puoi seguire, con il PID, le chiamate di sistema di ogni processo ( a cui hai accesso con UID/GID)

[Vincenzo1968]

Questo è l'output di top mentre eseguo il mio programma per il contest 19 punto B.1:



E con ps invece? c'aggià fà?

[The_ouroboros]

ps ti da PID e varie dipendenze.
Con ef hai un tree di come sono graticamente.

[Vincenzo1968]

Originariamente inviato da The_ouroboros

ps ti da PID e varie dipendenze.
Con ef hai un tree di come sono graticamente.

Ah quindi, come con top, eseguo ps e poi lancio il mio programma da un secondo terminale?

[Vincenzo1968]

ps mi da un fottiò di righe:

UID        PID  PPID  C STIME TTY          TIME CMD
root         1     0  0 13:26 ?        00:00:00 /sbin/init
root         2     0  0 13:26 ?        00:00:00 [kthreadd]
root         3     2  0 13:26 ?        00:00:06 [ksoftirqd/0]
root         6     2  0 13:26 ?        00:00:00 [migration/0]
root         7     2  0 13:26 ?        00:00:00 [watchdog/0]
root         8     2  0 13:26 ?        00:00:00 [migration/1]
root        10     2  0 13:26 ?        00:00:07 [ksoftirqd/1]
root        11     2  0 13:26 ?        00:00:00 [watchdog/1]
root        12     2  0 13:26 ?        00:00:00 [cpuset]
root        13     2  0 13:26 ?        00:00:00 [khelper]
root        14     2  0 13:26 ?        00:00:00 [kdevtmpfs]
root        15     2  0 13:26 ?        00:00:00 [netns]
root        16     2  0 13:26 ?        00:00:00 [kworker/u:1]
root        17     2  0 13:26 ?        00:00:00 [sync_supers]
root        18     2  0 13:26 ?        00:00:00 [bdi-default]
root        19     2  0 13:26 ?        00:00:00 [kintegrityd]
root        20     2  0 13:26 ?        00:00:00 [kblockd]
root        21     2  0 13:26 ?        00:00:00 [ata_sff]
root        22     2  0 13:26 ?        00:00:00 [khubd]
root        23     2  0 13:26 ?        00:00:00 [md]
root        26     2  0 13:26 ?        00:00:00 [khungtaskd]
root        27     2  0 13:26 ?        00:00:00 [kswapd0]
root        28     2  0 13:26 ?        00:00:00 [ksmd]
root        29     2  0 13:26 ?        00:00:00 [khugepaged]
root        30     2  0 13:26 ?        00:00:00 [fsnotify_mark]
root        31     2  0 13:26 ?        00:00:00 [ecryptfs-kthrea]
root        32     2  0 13:26 ?        00:00:00 [crypto]
root        41     2  0 13:26 ?        00:00:00 [kthrotld]
root        42     2  0 13:26 ?        00:00:00 [scsi_eh_0]
root        43     2  0 13:26 ?        00:00:00 [scsi_eh_1]
root        44     2  0 13:26 ?        00:00:00 [scsi_eh_2]
root        45     2  0 13:26 ?        00:00:00 [scsi_eh_3]
root        48     2  0 13:26 ?        00:00:00 [kworker/u:4]
root        50     2  0 13:26 ?        00:00:00 [binder]
root        70     2  0 13:26 ?        00:00:00 [deferwq]
root        71     2  0 13:26 ?        00:00:00 [charger_manager]
root        72     2  0 13:26 ?        00:00:00 [devfreq_wq]
root       214     2  0 13:26 ?        00:00:00 [scsi_eh_4]
root       216     2  0 13:26 ?        00:00:00 [scsi_eh_5]
root       238     2  0 13:26 ?        00:00:00 [kdmflush]
root       240     2  0 13:26 ?        00:00:00 [kdmflush]
root       255     2  0 13:26 ?        00:00:00 [jbd2/dm-0-8]
root       256     2  0 13:26 ?        00:00:00 [ext4-dio-unwrit]
root       274     2  0 13:26 ?        00:00:00 [flush-252:0]
root       547     1  0 13:26 ?        00:00:00 upstart-udev-bridge --daemon
root       566     1  0 13:26 ?        00:00:00 /sbin/udevd --daemon
102        571     1  0 13:26 ?        00:00:00 dbus-daemon --system --fork
root       595     1  0 13:26 ?        00:00:00 /usr/sbin/bluetoothd
syslog     625     1  0 13:26 ?        00:00:01 rsyslogd -c5
avahi      627     1  0 13:26 ?        00:00:00 avahi-daemon: running [Ubuntu12-
avahi      628   627  0 13:26 ?        00:00:00 avahi-daemon: chroot helper
root       643     2  0 13:26 ?        00:00:00 [krfcommd]
root       686     1  0 13:26 ?        00:00:00 /usr/sbin/cupsd -F
root       700     2  0 13:26 ?        00:00:00 [ttm_swap]
root       727     2  0 13:26 ?        00:00:00 [kpsmoused]
root       731     2  0 13:26 ?        00:00:00 [edac-poller]
root       738     2  0 13:26 ?        00:00:00 [kvm-irqfd-clean]
root       811     2  0 13:26 ?        00:00:00 [hd-audio0]
root       871     1  0 13:26 ?        00:00:00 /usr/sbin/modem-manager
root       883     1  0 13:26 ?        00:00:00 NetworkManager
root       893     1  0 13:26 ?        00:00:00 /usr/lib/policykit-1/polkitd --n
root       902     1  0 13:26 ?        00:00:00 upstart-socket-bridge --daemon
root       986     1  0 13:26 tty4     00:00:00 /sbin/getty -8 38400 tty4
root       995     1  0 13:26 tty5     00:00:00 /sbin/getty -8 38400 tty5
root      1011     1  0 13:26 tty2     00:00:00 /sbin/getty -8 38400 tty2
root      1013     1  0 13:26 tty3     00:00:00 /sbin/getty -8 38400 tty3
root      1016     1  0 13:26 tty6     00:00:00 /sbin/getty -8 38400 tty6
root      1048     1  0 13:26 ?        00:00:00 acpid -c /etc/acpi/events -s /va
whoopsie  1049     1  0 13:26 ?        00:00:00 whoopsie
root      1068     1  0 13:26 ?        00:00:00 /usr/sbin/irqbalance
root      1073     1  0 13:26 ?        00:00:00 cron
daemon    1074     1  0 13:26 ?        00:00:00 atd
root      1110     1  0 13:26 ?        00:00:00 lightdm
mysql     1138     1  0 13:26 ?        00:00:12 /usr/sbin/mysqld
root      1191  1110  6 13:26 tty7     00:08:53 /usr/bin/X :0 -core -auth /var/r
postgres  1231     1  0 13:26 ?        00:00:00 /usr/lib/postgresql/9.1/bin/post
root      1251     1  0 13:26 ?        00:00:00 /usr/lib/accountsservice/account
root      1269     1  0 13:26 ?        00:00:00 /usr/sbin/console-kit-daemon --n
root      1353   883  0 13:26 ?        00:00:00 /sbin/dhclient -d -4 -sf /usr/li
root      1417     1  0 13:26 ?        00:00:00 /usr/lib/upower/upowerd
postgres  1448  1231  0 13:26 ?        00:00:01 postgres: writer process        
postgres  1449  1231  0 13:26 ?        00:00:01 postgres: wal writer process    
postgres  1451  1231  0 13:26 ?        00:00:00 postgres: autovacuum launcher pr
postgres  1452  1231  0 13:26 ?        00:00:00 postgres: stats collector proces
root      1477  1110  0 13:26 ?        00:00:00 lightdm --session-child 12 21
colord    1575     1  0 13:26 ?        00:00:00 /usr/lib/x86_64-linux-gnu/colord
rtkit     1656     1  0 13:26 ?        00:00:00 /usr/lib/rtkit/rtkit-daemon
lightdm   1746     1  0 13:26 ?        00:00:00 /usr/lib/evolution/evolution-cal
nobody    1758   883  0 13:27 ?        00:00:01 /usr/sbin/dnsmasq --no-resolv --
root      1856     1  0 13:27 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  1879  1856  0 13:27 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  1880  1856  0 13:27 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  1881  1856  0 13:27 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  1882  1856  0 13:27 ?        00:00:00 /usr/sbin/apache2 -k start
www-data  1883  1856  0 13:27 ?        00:00:00 /usr/sbin/apache2 -k start
root      1902     1  0 13:27 tty1     00:00:00 /sbin/getty -8 38400 tty1
vincenzo  2041     1  0 13:27 ?        00:00:00 /usr/bin/gnome-keyring-daemon --
vincenzo  2052  1477  0 13:27 ?        00:00:00 gnome-session --session=ubuntu
vincenzo  2088  2052  0 13:27 ?        00:00:00 /usr/bin/ssh-agent /usr/bin/dbus
vincenzo  2091     1  0 13:27 ?        00:00:00 /usr/bin/dbus-launch --exit-with
vincenzo  2092     1  0 13:27 ?        00:00:05 //bin/dbus-daemon --fork --print
vincenzo  2094     1  0 13:27 ?        00:00:00 /usr/lib/at-spi2-core/at-spi-bus
vincenzo  2098  2094  0 13:27 ?        00:00:00 /bin/dbus-daemon --config-file=/
vincenzo  2101     1  0 13:27 ?        00:00:02 /usr/lib/at-spi2-core/at-spi2-re
vincenzo  2114  2052  0 13:27 ?        00:00:05 /usr/lib/gnome-settings-daemon/g
vincenzo  2120     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfsd
vincenzo  2124     1  0 13:27 ?        00:00:00 /usr/lib/gvfs//gvfsd-fuse -f /ru
vincenzo  2137  2052  3 13:27 ?        00:04:15 compiz
vincenzo  2143     1  0 13:27 ?        00:00:00 /usr/lib/dconf/dconf-service
vincenzo  2151     1  0 13:27 ?        00:00:01 /usr/bin/pulseaudio --start --lo
vincenzo  2153  2052  0 13:27 ?        00:00:00 nm-applet
vincenzo  2154  2052  0 13:27 ?        00:00:00 bluetooth-applet
vincenzo  2155  2052  0 13:27 ?        00:00:00 /usr/lib/policykit-1-gnome/polki
vincenzo  2156  2052  0 13:27 ?        00:00:00 /usr/lib/gnome-settings-daemon/g
vincenzo  2159  2151  0 13:27 ?        00:00:00 /usr/lib/pulseaudio/pulse/gconf-
vincenzo  2161     1  0 13:27 ?        00:00:00 /usr/lib/x86_64-linux-gnu/gconf/
vincenzo  2185     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfs-udisks2-volum
root      2189     1  0 13:27 ?        00:00:00 /usr/lib/udisks2/udisksd --no-de
vincenzo  2198     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfs-gphoto2-volum
vincenzo  2204     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfs-afc-volume-mo
vincenzo  2214     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfsd-trash --spaw
vincenzo  2224     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfsd-burn --spawn
vincenzo  2232     1  0 13:27 ?        00:00:06 /usr/lib/bamf/bamfdaemon
vincenzo  2236  2137  0 13:27 ?        00:00:00 /bin/sh -c /usr/bin/gtk-window-d
vincenzo  2237  2236  0 13:27 ?        00:00:04 /usr/bin/gtk-window-decorator
vincenzo  2250     1  0 13:27 ?        00:00:18 /usr/lib/unity/unity-panel-servi
vincenzo  2252     1  0 13:27 ?        00:00:08 /usr/lib/indicator-appmenu/hud-s
vincenzo  2266     1  0 13:27 ?        00:00:00 /usr/lib/indicator-sound/indicat
vincenzo  2270     1  0 13:27 ?        00:00:00 /usr/lib/indicator-datetime/indi
vincenzo  2271     1  0 13:27 ?        00:00:00 /usr/lib/indicator-messages/indi
vincenzo  2274     1  0 13:27 ?        00:00:00 /usr/lib/x86_64-linux-gnu/indica
vincenzo  2275     1  0 13:27 ?        00:00:00 /usr/lib/indicator-printers/indi
vincenzo  2276     1  0 13:27 ?        00:00:00 /usr/lib/indicator-session/indic
vincenzo  2303     1  0 13:27 ?        00:00:00 /usr/lib/evolution/evolution-sou
vincenzo  2320     1  0 13:27 ?        00:00:00 /usr/lib/gnome-online-accounts/g
vincenzo  2326     1  0 13:27 ?        00:00:00 /usr/lib/geoclue/geoclue-master
vincenzo  2341     1  0 13:27 ?        00:00:00 /usr/lib/ubuntu-geoip/ubuntu-geo
vincenzo  2351  2052  0 13:27 ?        00:00:00 telepathy-indicator
vincenzo  2357     1  0 13:27 ?        00:00:00 /usr/lib/telepathy/mission-contr
vincenzo  2364     1  0 13:27 ?        00:00:00 /usr/bin/signon-ui
vincenzo  2368  2052  0 13:27 ?        00:00:03 zeitgeist-datahub
vincenzo  2374     1  0 13:27 ?        00:00:00 /usr/bin/zeitgeist-daemon
vincenzo  2380     1  0 13:27 ?        00:00:00 /usr/lib/zeitgeist/zeitgeist-fts
vincenzo  2388  2380  0 13:27 ?        00:00:00 /bin/cat
vincenzo  2401     1  0 13:27 ?        00:00:02 /usr/bin/python /usr/lib/ubuntuo
vincenzo  2449     1  0 13:27 ?        00:00:49 nautilus trash://
vincenzo  2461     1  0 13:27 ?        00:00:00 /usr/lib/unity-lens-applications
vincenzo  2465     1  0 13:27 ?        00:00:00 /usr/lib/unity-lens-files/unity-
vincenzo  2467     1  0 13:27 ?        00:00:00 /usr/lib/gwibber/unity-gwibber-d
vincenzo  2470     1  0 13:27 ?        00:00:00 /usr/lib/x86_64-linux-gnu/unity-
vincenzo  2472     1  0 13:27 ?        00:00:00 /usr/bin/python3 /usr/lib/unity-
vincenzo  2473     1  0 13:27 ?        00:00:00 /usr/lib/x86_64-linux-gnu/unity-
vincenzo  2475     1  0 13:27 ?        00:00:00 /usr/bin/python /usr/lib/unity-l
vincenzo  2540     1  0 13:27 ?        00:00:00 /usr/lib/gvfs/gvfsd-metadata
vincenzo  2558     1  0 13:27 ?        00:00:00 /usr/lib/x86_64-linux-gnu/unity-
vincenzo  2560     1  0 13:27 ?        00:00:00 /usr/bin/python3 /usr/lib/unity-
vincenzo  2561     1  0 13:27 ?        00:00:00 /usr/bin/python /usr/lib/unity-s
vincenzo  2599  2052  0 13:28 ?        00:00:00 update-notifier
root      2678   566  0 13:29 ?        00:00:00 /sbin/udevd --daemon
root      2679   566  0 13:29 ?        00:00:00 /sbin/udevd --daemon
vincenzo  2684  2052  0 13:29 ?        00:00:00 /usr/lib/x86_64-linux-gnu/deja-d
vincenzo  2715     1  0 13:29 ?        00:00:00 /usr/lib/libunity-webapps/unity-
vincenzo  4064     1 35 14:44 ?        00:18:20 /usr/lib/firefox/firefox
vincenzo  4260     1  0 14:57 ?        00:00:06 gnome-terminal
vincenzo  4269  4260  0 14:57 ?        00:00:00 gnome-pty-helper
vincenzo  4368     1  0 15:01 ?        00:00:00 kdeinit4: kdeinit4 Running...
vincenzo  4371  4368  0 15:01 ?        00:00:00 kdeinit4: klauncher [kdeinit] --
vincenzo  4373     1  0 15:01 ?        00:00:00 kdeinit4: kded4 [kdeinit]  
root      4380     1  0 15:01 ?        00:00:00 /usr/lib/udisks/udisks-daemon
root      4381  4380  0 15:01 ?        00:00:00 udisks-daemon: not polling any d
vincenzo  4389     1  0 15:01 ?        00:00:01 /usr/bin/knotify4
vincenzo  4393     1  0 15:01 ?        00:00:00 /usr/lib/notify-osd/notify-osd
vincenzo  4436  4064  3 15:02 ?        00:01:17 /usr/lib/firefox/plugin-containe
root      4650     2  0 15:20 ?        00:00:01 [kworker/0:1]
root      4652     2  0 15:22 ?        00:00:01 [kworker/1:2]
vincenzo  4683  4260  0 15:25 pts/2    00:00:00 bash
root      4737     2  0 15:26 ?        00:00:01 [kworker/0:2]
root      4762     2  0 15:27 ?        00:00:00 [kworker/1:1]
root      4833     2  0 15:31 ?        00:00:00 [kworker/0:0]
vincenzo  4901  4260  0 15:36 pts/1    00:00:00 bash
vincenzo  4951  4901  0 15:36 pts/1    00:00:00 ps -ef

[The_ouroboros]

ti do un esempio del mio ps ef cosi capisci meglio

  PID TTY      STAT   TIME COMMAND
 3674 tty1     S      0:00 -bash TERM=linux HOME=/home/lucas SHELL=/bin/bash USER=lucas LOGNAME=lucas PATH=/usr/local/bin:
 3759 tty1     S+     0:00  \_ /bin/sh /usr/bin/startx SHELL=/bin/bash TERM=linux XDG_SESSION_COOKIE=
 3776 tty1     S+     0:00      \_ xinit /etc/X11/xinit/xinitrc -- /etc/X11/xinit/xserverrc :0 -auth /tmp/serverauth.CbM2y
 3785 tty1     S      0:00          \_ /usr/bin/ck-launch-session /usr/bin/dbus-launch --exit-with-session x-session-manag
 3821 tty1     S      0:00              \_ /bin/sh /etc/xdg/xfce4/xinitrc -- /etc/X11/xinit/xserverrc MAIL=/var/mail/lucas
 3839 tty1     S      0:02                  \_ xscreensaver -no-splash MAIL=/var/mail/lucas USER=lucas SSH_AGENT_PID=3812
 3841 tty1     Sl     0:02                  \_ xfce4-session MAIL=/var/mail/lucas USER=lucas SSH_AGENT_PID=3812 SHLVL=1 PE
 3850 tty1     S      0:03                      \_ xfwm4 --display :0.0 --sm-client-id 2b0ef8c8e-4323-46a8-9302-b9cd5dd23c
 3855 tty1     Sl     0:02                      \_ Thunar --sm-client-id 
 3860 tty1     Sl     0:09                      \_ xfce4-panel --display :0.0 --sm-client-id
 3879 tty1     S      0:00                      |   \_ /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper /usr/lib/x86_64-linux
 3886 tty1     S      1:48                      |   \_ /usr/lib/x86_64-linux-gnu/xfce4/panel-plugins/xfce4-netload-plugin 
 3887 tty1     S      0:01                      |   \_ /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper /usr/lib/x86_64-linux
 3888 tty1     Sl     0:00                      |   \_ /usr/lib/x86_64-linux-gnu/xfce4/panel-plugins/xfce4-mixer-plugin  1
 3861 tty1     Sl     0:01                      \_ xfdesktop --display :0.0 --sm-client-id 
 4295 tty1     SLl    7:26                          \_ /usr/lib/chromium/chromium --password-store=detect                
 4299 tty1     S      0:06                              \_ /usr/lib/chromium/chromium --password-store=detect            
 4300 tty1     S      0:00                              \_ /usr/lib/chromium/chromium-sandbox /usr/lib/chromium/chromium -
 4302 tty1     S      0:00                              |   \_ /usr/lib/chromium/chromium --type=zygote                  
 4305 tty1     S      0:00                              |       \_ /usr/lib/chromium/chromium --type=zygote
 4325 tty1     Sl     2:30                              |           \_ /usr/lib/chromium/chromium --type=renderer --lang=e
 4329 tty1     Sl     0:18                              |           \_ /usr/lib/chromium/chromium --type=renderer --lang=e
18969 tty1     Sl     0:15                              |           \_ /usr/lib/chromium/chromium --type=renderer --lang=e
21383 tty1     Sl     0:04                              |           \_ /usr/lib/chromium/chromium --type=renderer --lang=e
25423 tty1     Sl     0:00                              |           \_ /usr/lib/chromium/chromium --type=renderer --lang=e
25431 tty1     Sl     0:02                              |           \_ /usr/lib/chromium/chromium --type=renderer --lang=e
 4400 tty1     Sl     0:01                              \_ /usr/lib/chromium/chromium --type=plugin --plugin-path=/home/lu
23725 tty1     Sl     0:00 xfce4-terminal MAIL=/var/mail/lucas USER=lucas SSH_AGENT_PID=3812 SHLVL=1 PERL_LOCAL_LIB_ROOT=/
23726 tty1     S      0:00  \_ gnome-pty-helper
23727 pts/0    Ss     0:00  \_ bash PERL_LOCAL_LIB_ROOT=/home/lucas/perl5 XDG_CONFIG_DIRS=/etc/xdg HUSHLOGIN=FALSE SHLVL=1
25475 pts/0    R+     0:00      \_ ps ef SSH_AGENT_PID=3812 GPG_AGENT_INFO=/home/lucas/.cache/keyring-yMDiWe/gpg:0:1 GLADE
 3890 tty1     Sl     0:00 /usr/lib/notification-daemon/notification-daemon MAIL=/var/mail/lucas USER=lucas SSH_AGENT_PID=
 3884 tty1     S      0:00 /usr/bin/python -O /usr/share/wicd/gtk/wicd-client.py --tray GNOME_KEYRING_PID=3848 MAIL=/var/m
 3878 tty1     Sl     0:00 /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1 MAIL=/var/mail/lucas USER=lucas
 3864 tty1     S      0:00 xfce4-settings-helper --display :0.0 --sm-client-id  MAIL=
 3848 tty1     SLl    0:02 gnome-keyring-daemon --start
 3846 tty1     S      0:00 xfsettingsd --force MAIL=/var/mail/lucas USER=lucas SSH_AGENT_PID=3812 SHLVL=1 PERL_LOCAL_LIB_R
 3824 tty1     S      0:00 /usr/bin/dbus-launch --exit-with-session x-session-manager MAIL=/var/mail/lucas USER=lucas SHLV

Con il PID (prima colonna) e strace puoi anche seguire le syscall che fa il tuo programma.

Es (chromium (chrome non da google)) con PID 4295

recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
write(44, "\0", 1)                      = 1
poll([{fd=8, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=8, revents=POLLOUT}])
writev(8, [{"\225\7\2\0/\333\t\0036\0\2\0.\333\t\3(\4\4\0\235\216\t\3\257\0\0\0\0\0\0\0", 32}, {NULL, 0}, {"", 0}], 3) = 32
poll([{fd=8, events=POLLIN}], 1, -1)    = 1 ([{fd=8, revents=POLLIN}])
recvfrom(8, "\1\1\3727\0\0\0\0\253\217\340\0\0\0q\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 4096, 0, NULL, NULL) = 32
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=8, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=8, revents=POLLOUT}])
writev(8, [{">\7\7\0\343\216\t\3\235\216\t\3\345\216\t\3\0\0\0\0\0\0\0\0\0\0\0\0(\0\4\0"..., 44}, {NULL, 0}, {"", 0}], 3) = 44
poll([{fd=8, events=POLLIN}], 1, -1)    = 1 ([{fd=8, revents=POLLIN}])
recvfrom(8, "\16\0\3737\235\216\t\3\0\0>\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 0, NULL, NULL) = 64
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=8, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=8, revents=POLLOUT}])
writev(8, [{">\7\7\0\343\216\t\3\235\216\t\3\345\216\t\3\316\4[\1\316\4[\1%\0<\0(\0\4\0"..., 44}, {NULL, 0}, {"", 0}], 3) = 44
poll([{fd=8, events=POLLIN}], 1, -1)    = 1 ([{fd=8, revents=POLLIN}])
recvfrom(8, "\16\0\3757\235\216\t\3\0\0>\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 0, NULL, NULL) = 64
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=66, events=POLLIN}, {fd=97, events=POLLIN}, {fd=94, events=POLLIN}, {fd=78, events=POLLIN}], 6, 0) = 0 (Timeout)
poll([{fd=8, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=8, revents=POLLOUT}])
writev(8, [{">\7\7\0\343\216\t\3\235\216\t\3\345\216\t\3{\4\344\1{\4\344\1$\0\"\0", 28}, {NULL, 0}, {"", 0}], 3) = 28
recvfrom(8, "\16\0\3777\235\216\t\3\0\0>\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 4096, 0, NULL, NULL) = 32
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=66, events=POLLIN}, {fd=97, events=POLLIN}, {fd=94, events=POLLIN}, {fd=78, events=POLLIN}], 6, 0) = 0 (Timeout)
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=66, events=POLLIN}, {fd=97, events=POLLIN}, {fd=94, events=POLLIN}, {fd=78, events=POLLIN}, {fd=10, events=POLLIN}], 7, 0) = 0 (Timeout)
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=66, events=POLLIN}, {fd=97, events=POLLIN}, {fd=94, events=POLLIN}, {fd=78, events=POLLIN}, {fd=10, events=POLLIN}], 7, 0) = 0 (Timeout)
recvfrom(8, 0x7f922677c0f4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=9, events=POLLIN}, {fd=8, events=POLLIN}, {fd=66, events=POLLIN}, {fd=97, events=POLLIN}, {fd=94, events=POLLIN}, {fd=78, events=POLLIN}, {fd=10, events=POLLIN}], 7, 748^C <unfini

[Vincenzo1968]

Grazie mille Ouro. E grazie mille Sottovento.

I vostri link è suggerimenti sono preziosi per me.

[The_ouroboros]

Originariamente inviato da Vincenzo1968

Grazie mille Ouro. E grazie mille Sottovento.

I vostri link è suggerimenti sono preziosi per me.

felice di averti aiutato almeno un pò.

[Vincenzo1968]

Ho trovato anche un bell'articolo su top e ps:

http://www.drdobbs.com/open-source/p...-dev/220700195



EDIT: e anche questo:

http://linux.die.net/man/1/atop

[Vincenzo1968]

Su Linux/GCC c'è anche gprof:

http://www.drdobbs.com/open-source/p...0700195?pgno=2



EDIT: ma bisogna avere i sorgenti e compilare con l'opzione -pg.

[The_ouroboros]

Originariamente inviato da Vincenzo1968

Su Linux/GCC c'è anche gprof:

http://www.drdobbs.com/open-source/p...0700195?pgno=2



EDIT: ma bisogna avere i sorgenti e compilare con l'opzione -pg.

con solo -g puoi usare gdb

[Vincenzo1968]

Originariamente inviato da The_ouroboros

con solo -g puoi usare gdb

Si, gdb l'ho già utilizzato. Ma funziona anche come profiler?