Memory usage
Earl Violet
ejviolet at yahoo.com
Wed Mar 7 00:57:28 UTC 2007
--- Leonardo de Miranda Cabral <leomcabral at gmail.com> wrote:
> Hi all,
>
> I have a notebook with 1GB Ram memory. I was taking a look in the
> memory usage
> of this notebook and guess what, with almost nothing
> (applications) loaded
> the memory that Kubuntu show as used with the 'free' command is
> 750MB.
> How????? I even stopped X (kdm), apache2, postgresql, everything...
> I`m
> getting crazy??!!! Why kubuntu don`t free this memory??? I went to
> a WinXP
> SP2 box with 512MB RAM that my father has and with a lot of
> application
> loaded it still hava free memory at about 200MB. For you guys help
> me lower
> my memory usage here a some 'free' and 'ps' outputs. [1] and [2]
> are outputs
> when nothing is loaded (neither X), and [3] and [4] with some
> default
> applications that usually starts with kde. Is this a kernel bug???
> If can any
> one help me or explain me this strange memory usage...
>
> ----------------- [1] -> free -m
> ---------------------------------------------
> total used free shared buffers
> cached
> Mem: 1002 761 240 0 36
> 659
> -/+ buffers/cache: 65 937
> Swap: 2933 0 2933
>
-----------------------------------------------------------------------------------
>
> ----------------- [2] -> ps aux
> ---------------------------------------------
> USER PID %CPU %MEM VSZ RSS TTY STAT START TIME
> COMMAND
> root 1 0.0 0.0 1632 612 ? Ss 18:32 0:01
> /sbin/init
> splash
> root 2 0.0 0.0 0 0 ? S 18:32 0:00
> [migration/0]
> root 3 0.0 0.0 0 0 ? SN 18:32 0:00
> [ksoftirqd/0]
> root 4 0.0 0.0 0 0 ? S 18:32 0:00
> [watchdog/0]
> root 5 0.0 0.0 0 0 ? S< 18:32 0:00
> [events/0]
> root 6 0.0 0.0 0 0 ? S< 18:32 0:00
> [khelper]
> root 7 0.0 0.0 0 0 ? S< 18:32 0:00
> [kthread]
> root 9 0.0 0.0 0 0 ? S< 18:32 0:00
> [kblockd/0]
> root 10 0.0 0.0 0 0 ? S< 18:32 0:00
> [kacpid]
> root 11 0.0 0.0 0 0 ? S< 18:32 0:00
> [kacpi_notify]
> root 102 0.0 0.0 0 0 ? S< 18:32 0:00
> [kseriod]
> root 135 0.0 0.0 0 0 ? S 18:32 0:00
> [pdflush]
> root 136 0.0 0.0 0 0 ? S 18:32 0:00
> [pdflush]
> root 137 0.0 0.0 0 0 ? S 18:32 0:00
> [kswapd0]
> root 138 0.0 0.0 0 0 ? S< 18:32 0:00
> [aio/0]
> root 1704 0.0 0.0 0 0 ? S< 18:32 0:00
> [khubd]
> root 1728 0.0 0.0 0 0 ? S< 18:32 0:00
> [khpsbpkt]
> root 1767 0.0 0.0 0 0 ? S 18:32 0:00
> [knodemgrd_0]
> root 1809 0.0 0.0 0 0 ? S< 18:32 0:00
> [kjournald]
> root 1884 0.0 0.0 1600 544 ? Ss 18:32 0:00
> //sbin/logd
> root 2027 0.0 0.1 2612 1040 ? S<s 18:32
> 0:00 /sbin/udevd --daemon
> root 2786 0.0 0.0 0 0 ? S< 18:32 0:00
> [shpchpd]
> root 2797 0.0 0.0 0 0 ? S< 18:32 0:00
> [kpsmoused]
> root 2915 0.0 0.0 0 0 ? S 18:32 0:00
> [pccardd]
> root 2916 0.0 0.0 0 0 ? S< 18:32 0:00
> [tifm0]
> root 3033 0.0 0.0 0 0 ? S< 18:32 0:00
> [ipw2200/0]
> root 3624 0.0 0.0 1600 508 tty2 Ss+ 18:32 0:00
> /sbin/getty
> 38400 tty2
> root 3625 0.0 0.0 1600 508 tty3 Ss+ 18:32 0:00
> /sbin/getty
> 38400 tty3
> root 3626 0.0 0.0 1596 504 tty4 Ss+ 18:32 0:00
> /sbin/getty
> 38400 tty4
> root 3627 0.0 0.0 1600 508 tty5 Ss+ 18:32 0:00
> /sbin/getty
> 38400 tty5
> root 3628 0.0 0.0 1600 504 tty6 Ss+ 18:32 0:00
> /sbin/getty
> 38400 tty6
> root 3853 0.0 0.1 2200 1164 ? Ss 18:32
> 0:00 /usr/sbin/acpid -c /etc/acpi/events -s /var/run/acpid.socket
> root 3948 0.0 0.0 1648 612 ? Ss 18:32 0:00
> /sbin/syslogd
> root 3974 0.0 0.0 1728 516 ? Ss 18:32 0:00
> /bin/dd bs 1
> if /proc/kmsg of /var/run/klogd/kmsg
> klog 3976 0.0 0.1 2428 1312 ? Ss 18:32
> 0:00 /sbin/klogd -P /var/run/klogd/kmsg
> cupsys 4098 0.0 0.1 4540 2000 ? Ss 18:32
> 0:00 /usr/sbin/cupsd
> root 4140 0.0 0.0 4900 924 ? Ss 18:32
> 0:00 /usr/sbin/hpiod
> hplip 4181 0.0 0.4 9672 4860 ? S 18:32 0:00
> python /usr/sbin/hpssd
> root 4291 0.0 0.2 5580 2272 ? Ss 18:32
> 0:00 /usr/sbin/apt-index-watcher watch --syslog
> 103 4311 0.0 0.0 2300 896 ? Ss 18:32
> 0:09 /usr/bin/dbus-daemon --system
> 106 4326 0.0 0.5 7220 5688 ? Ss 18:32
> 0:05 /usr/sbin/hald
> root 4327 0.0 0.1 2916 1040 ? S 18:32 0:00
> hald-runner
> 106 4333 0.0 0.0 2024 872 ? S 18:33
> 0:00 /usr/lib/hal/hald-addon-acpi
> 106 4339 0.0 0.0 2024 844 ? S 18:33
> 0:00 /usr/lib/hal/hald-addon-keyboard
> 106 4355 0.0 0.0 2028 916 ? S 18:33
> 0:00 /usr/lib/hal/hald-addon-storage
> root 4372 0.0 0.0 1948 796 ? Ss 18:33
> 0:00 /usr/sbin/dhcdbd --system
> root 4389 0.0 0.2 20372 2104 ? Ssl 18:33
> 0:01 /usr/sbin/NetworkManager --pid-file
> /var/run/NetworkManager/NetworkManager.pid
> root 4404 0.0 0.1 2964 1248 ? Ss 18:33
> 0:00 /usr/sbin/NetworkManagerDispatcher --pid-file
> /var/run/NetworkManager/NetworkManagerDispatcher.pid
> root 4447 0.0 0.0 0 0 ? S< 18:33 0:00
> [ondemand]
> root 4496 0.0 0.1 4940 1048 ? Ss 18:33
> 0:00 /usr/sbin/sshd
> root 4578 0.0 0.0 2072 740 ? Ss 18:33
> 0:00 /usr/sbin/hcid -x
> root 4584 0.0 0.0 1668 496 ? Ss 18:33
> 0:00 /usr/sbin/sdpd
> root 4596 0.0 0.0 0 0 ? S< 18:33 0:00
> [krfcommd]
> daemon 4634 0.0 0.0 1856 428 ? Ss 18:33 0:00
> /usr/sbin/atd
> root 4647 0.0 0.0 2192 868 ? Ss 18:33
> 0:00 /usr/sbin/cron
> dhcp 4805 0.0 0.0 2392 748 ? S<s 18:33 0:00
> dhclient3 -pf /var/run/dhclient.eth0.pid -lf
> /var/lib/dhcp3/dhclient.eth0.leases
> eth0
> root 5221 0.0 0.1 3460 1396 ? S 18:53
> 0:00 /sbin/wpa_supplicant -dd -g /var/run/wpa_supplicant-global
> dhcp 5228 0.0 0.1 2400 1168 ? S 18:53
> 0:00 /sbin/dhclient -1 -lf /var/lib/dhcp3/dhclient.eth1.leases -pf
> /var/run/dhclient.eth1.pid -q -e
> dhc_dbus=31 -d eth1
> root 7806 0.0 0.1 2672 1172 tty1 Ss 21:18 0:00
> /bin/login --
> 1000 7812 0.7 0.3 5872 3444 tty1 S 21:18 0:00
> -bash
> 1000 7831 0.0 0.0 2476 988 tty1 R+ 21:18 0:00 ps
> aux
> --------------------- [2] end
> --------------------------------------
>
>
> ----------------------[3] -> free -m -----------------------------
> total used free shared buffers
> cached
> Mem: 1002 967 34 0 39
> 684
> -/+ buffers/cache: 244 757
> Swap: 2933 0 2933
>
------------------------------------------------------------------------
>
>
> --------------------- [4] -> ps aux -------------------------------
> USER PID %CPU %MEM VSZ RSS TTY STAT START TIME
> COMMAND
> root 1 0.0 0.0 1632 612 ? Ss 18:32 0:01
> /sbin/init
> splash
> root 2 0.0 0.0 0 0 ? S 18:32 0:00
> [migration/0]
> root 3 0.0 0.0 0 0 ? SN 18:32 0:00
> [ksoftirqd/0]
> root 4 0.0 0.0 0 0 ? S 18:32 0:00
> [watchdog/0]
> root 5 0.0 0.0 0 0 ? S< 18:32 0:00
> [events/0]
>
>From my observation, Linux keeps filling the memory but will free it
up as needed. I run a SPARC U60 with 1.5 GB memory and a U30 with 1
GB and no swap on either. The memory is quickly very full. I run for
days with no problem. Don't worry about it.
Earl
URL http://deserthowler.cjb.net
Instant messenger: earlcoyote
ICQ:64033496
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