BBB Angstrom leak?

So, I just noticed that after I boot Angstrom on BBB, the available memory listed for the rootfs drops steadily…
I’m not running any apps or doing anything, except SSH session and periodically doing ‘df’.
I disconnected eth0 and there is no wireless dongle.

Eventually the ‘free’ value reaches zero. I do recall that the when I updated the eMMC, the reported free was about 50MB. I installed a bunch of node.js libs, but it only got to about 20MB.
But, I just noticed that the free value was decreased while I basically did nothing. I suppose something could be logging bunch of errors somewhere.

Anyone else notice anything like this?

oot@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1644860 3360 100% /
/dev/root 1738184 1644860 3360 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 288 255004 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1644900 3320 100% /
/dev/root 1738184 1644900 3320 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 288 255004 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1644900 3320 100% /
/dev/root 1738184 1644900 3320 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 288 255004 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1644928 3292 100% /
/dev/root 1738184 1644928 3292 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 288 255004 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1644956 3264 100% /
/dev/root 1738184 1644956 3264 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1644964 3256 100% /
/dev/root 1738184 1644964 3256 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1645648 2572 100% /
/dev/root 1738184 1645648 2572 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# ps -A
PID TTY TIME CMD
1 ? 00:00:00 systemd
2 ? 00:00:00 kthreadd
3 ? 00:00:00 ksoftirqd/0
4 ? 00:00:00 kworker/0:0
5 ? 00:00:00 kworker/0:0H
6 ? 00:00:00 kworker/u:0
7 ? 00:00:00 kworker/u:0H
8 ? 00:00:00 migration/0
9 ? 00:00:00 rcu_bh
10 ? 00:00:00 rcu_sched
11 ? 00:00:00 watchdog/0
12 ? 00:00:00 khelper
13 ? 00:00:00 kdevtmpfs
14 ? 00:00:00 netns
15 ? 00:00:00 kworker/0:1
16 ? 00:00:00 bdi-default
17 ? 00:00:00 kintegrityd
18 ? 00:00:00 kblockd
19 ? 00:00:00 khubd
20 ? 00:00:00 irq/86-44e0b000
21 ? 00:00:00 kworker/u:1
24 ? 00:00:00 irq/23-tps65217
27 ? 00:00:00 irq/46-4819c000
36 ? 00:00:00 rpciod
38 ? 00:00:00 khungtaskd
39 ? 00:00:00 kswapd0
40 ? 00:00:00 fsnotify_mark
41 ? 00:00:00 nfsiod
42 ? 00:00:00 crypto
45 ? 00:00:00 pencrypt
46 ? 00:00:00 pdecrypt
53 ? 00:00:00 OMAP UART0
57 ? 00:00:00 kpsmoused
58 ? 00:00:00 irq/150-mmc0
70 ? 00:00:00 kworker/u:2
73 ? 00:00:00 mmcqd/1
74 ? 00:00:00 mmcqd/1boot0
75 ? 00:00:00 mmcqd/1boot1
76 ? 00:00:00 deferwq
79 ? 00:00:00 kworker/0:1H
80 ? 00:00:00 jbd2/mmcblk0p2-
81 ? 00:00:00 ext4-dio-unwrit
86 ? 00:00:04 systemd-journal
92 ? 00:00:00 systemd-udevd
95 ? 00:00:00 kworker/0:2
106 ? 00:00:00 krfcommd
122 ? 00:00:00 crond
123 ? 00:00:00 connmand
125 ? 00:00:00 g-ether-load.sh
129 ? 00:00:05 node4
130 ? 00:00:01 node
131 ? 00:00:00 systemd-logind
133 ? 00:00:00 dbus-daemon
137 tty1 00:00:00 agetty
138 ? 00:00:00 gdm-binary
177 ? 00:00:00 flush-179:0
181 ? 00:00:00 file-storage
183 ? 00:00:00 gdm-simple-slav
188 ? 00:00:00 wpa_supplicant
203 tty2 00:00:01 X
207 ttyO0 00:00:00 agetty
210 ? 00:00:00 udhcpd
263 ? 00:00:00 cfg80211
268 ? 00:00:00 console-kit-dae
335 ? 00:00:00 polkitd
401 ttyGS0 00:00:00 agetty
409 ? 00:00:01 dropbear
411 ? 00:00:00 gdm-session-wor
413 ? 00:00:00 upowerd
462 pts/0 00:00:00 sh
467 ? 00:00:00 ntpd
493 ? 00:00:00 gnome-session
500 ? 00:00:00 ssh-agent
503 ? 00:00:00 dbus-launch
504 ? 00:00:00 dbus-daemon
507 ? 00:00:00 gconfd-2
516 ? 00:00:00 gnome-keyring-d
519 ? 00:00:00 gnome-settings-
521 ? 00:00:00 gvfsd
527 ? 00:00:00 gvfs-fuse-daemo
536 ? 00:00:00 metacity
538 ? 00:00:00 gvfs-gdu-volume
539 ? 00:00:00 udisks-daemon
540 ? 00:00:01 gnome-panel
541 ? 00:00:00 udisks-daemon
546 ? 00:00:00 gvfs-gphoto2-vo
548 ? 00:00:01 nautilus
552 ? 00:00:00 wnck-applet
553 ? 00:00:00 gnome-power-man
554 ? 00:00:00 connman-applet
555 ? 00:00:00 gdu-notificatio
556 ? 00:00:00 bluetooth-apple
566 ? 00:00:00 clock-applet
573 ? 00:00:00 notification-ar
577 ? 00:00:00 gvfsd-trash
581 ? 00:00:00 gsd-datetime-me
592 pts/0 00:00:00 ps
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1645688 2532 100% /
/dev/root 1738184 1645688 2532 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1645684 2536 100% /
/dev/root 1738184 1645684 2536 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1645696 2524 100% /
/dev/root 1738184 1645696 2524 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1645720 2500 100% /
/dev/root 1738184 1645720 2500 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1645732 2488 100% /
/dev/root 1738184 1645732 2488 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 292 255000 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE

root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1650592 0 100% /
/dev/root 1738184 1650592 0 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 276 255016 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1650596 0 100% /
/dev/root 1738184 1650596 0 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 276 255016 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1650596 0 100% /
/dev/root 1738184 1650596 0 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 276 255016 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1650604 0 100% /
/dev/root 1738184 1650604 0 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 276 255016 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
root@beaglebone:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1738184 1650620 0 100% /
/dev/root 1738184 1650620 0 100% /
devtmpfs 255160 0 255160 0% /dev
tmpfs 255292 4 255288 1% /dev/shm
tmpfs 255292 280 255012 1% /run
tmpfs 255292 0 255292 0% /sys/fs/cgroup
tmpfs 255292 4 255288 1% /tmp
/dev/mmcblk0p1 71133 55238 15895 78% /media/BEAGLEBONE

Try du -shcx /* to see how much disk space directory is taking, then drill down from there. If I had to guess, and yes I’d suggest /var/log is a good bet…