# sync; echo 3 > /proc/sys/vm/drop_caches
# free -m
total used free shared buffers cached
Mem: 3009 1694 1314 0 0 8
-/+ buffers/cache: 1685 1323
Swap: 1019 0 1019
#
# free
total used free shared buffers cached
Mem: 3081416 2095996 985420 504 73672 332512
-/+ buffers/cache: 1689812 1391604
Swap: 1044476 0 1044476
# ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 33512 2772 ? Ss 01:52 0:01 /sbin/init
root 2 0.0 0.0 0 0 ? S 01:52 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/0]
root 4 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/0:0]
root 5 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/0:0H]
root 7 0.0 0.0 0 0 ? S 01:52 0:04 [rcu_sched]
root 8 0.0 0.0 0 0 ? S 01:52 0:01 [rcuos/0]
root 9 0.0 0.0 0 0 ? S 01:52 0:02 [rcuos/1]
root 10 0.0 0.0 0 0 ? S 01:52 0:00 [rcuos/2]
root 11 0.0 0.0 0 0 ? S 01:52 0:00 [rcuos/3]
root 12 0.0 0.0 0 0 ? S 01:52 0:00 [rcuos/4]
root 13 0.0 0.0 0 0 ? S 01:52 0:00 [rcuos/5]
root 14 0.0 0.0 0 0 ? S 01:52 0:01 [rcuos/6]
root 15 0.0 0.0 0 0 ? S 01:52 0:00 [rcuos/7]
root 16 0.0 0.0 0 0 ? S 01:52 0:00 [rcu_bh]
root 17 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/0]
root 18 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/1]
root 19 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/2]
root 20 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/3]
root 21 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/4]
root 22 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/5]
root 23 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/6]
root 24 0.0 0.0 0 0 ? S 01:52 0:00 [rcuob/7]
root 25 0.0 0.0 0 0 ? S 01:52 0:00 [migration/0]
root 26 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/0]
root 27 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/1]
root 28 0.0 0.0 0 0 ? S 01:52 0:00 [migration/1]
root 29 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/1]
root 30 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/1:0]
root 31 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/1:0H]
root 32 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/2]
root 33 0.0 0.0 0 0 ? S 01:52 0:00 [migration/2]
root 34 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/2]
root 35 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/2:0]
root 36 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/2:0H]
root 37 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/3]
root 38 0.0 0.0 0 0 ? S 01:52 0:00 [migration/3]
root 39 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/3]
root 40 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/3:0]
root 41 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/3:0H]
root 42 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/4]
root 43 0.0 0.0 0 0 ? S 01:52 0:00 [migration/4]
root 44 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/4]
root 45 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/4:0]
root 46 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/4:0H]
root 47 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/5]
root 48 0.0 0.0 0 0 ? S 01:52 0:00 [migration/5]
root 49 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/5]
root 50 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/5:0]
root 51 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/5:0H]
root 52 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/6]
root 53 0.0 0.0 0 0 ? S 01:52 0:00 [migration/6]
root 54 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/6]
root 55 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/6:0]
root 56 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/6:0H]
root 57 0.0 0.0 0 0 ? S 01:52 0:00 [watchdog/7]
root 58 0.0 0.0 0 0 ? S 01:52 0:00 [migration/7]
root 59 0.0 0.0 0 0 ? S 01:52 0:00 [ksoftirqd/7]
root 61 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/7:0H]
root 62 0.0 0.0 0 0 ? S< 01:52 0:00 [khelper]
root 63 0.0 0.0 0 0 ? S 01:52 0:00 [kdevtmpfs]
root 64 0.0 0.0 0 0 ? S< 01:52 0:00 [netns]
root 65 0.0 0.0 0 0 ? S< 01:52 0:00 [writeback]
root 66 0.0 0.0 0 0 ? S< 01:52 0:00 [kintegrityd]
root 67 0.0 0.0 0 0 ? S< 01:52 0:00 [bioset]
root 68 0.0 0.0 0 0 ? S< 01:52 0:00 [kworker/u17:0]
root 69 0.0 0.0 0 0 ? S< 01:52 0:00 [kblockd]
root 70 0.0 0.0 0 0 ? S< 01:52 0:00 [ata_sff]
root 71 0.0 0.0 0 0 ? S 01:52 0:00 [khubd]
root 72 0.0 0.0 0 0 ? S< 01:52 0:00 [md]
root 73 0.0 0.0 0 0 ? S< 01:52 0:00 [devfreq_wq]
root 74 0.0 0.0 0 0 ? S 01:52 0:00 [kworker/2:1]
root 76 0.0 0.0 0 0 ? S 01:53 0:00 [khungtaskd]
root 77 0.0 0.0 0 0 ? S 01:53 0:00 [kswapd0]
root 78 0.0 0.0 0 0 ? SN 01:53 0:00 [ksmd]
root 79 0.0 0.0 0 0 ? SN 01:53 0:00 [khugepaged]
root 80 0.0 0.0 0 0 ? S 01:53 0:00 [fsnotify_mark]
root 81 0.0 0.0 0 0 ? S 01:53 0:00 [ecryptfs-kthrea]
root 82 0.0 0.0 0 0 ? S< 01:53 0:00 [crypto]
root 94 0.0 0.0 0 0 ? S< 01:53 0:00 [kthrotld]
root 96 0.0 0.0 0 0 ? R 01:53 0:00 [kworker/7:1]
root 97 0.0 0.0 0 0 ? S 01:53 0:00 [scsi_eh_0]
root 98 0.0 0.0 0 0 ? S 01:53 0:00 [scsi_eh_1]
root 119 0.0 0.0 0 0 ? S< 01:53 0:00 [deferwq]
root 120 0.0 0.0 0 0 ? S< 01:53 0:00 [charger_manager]
root 121 0.0 0.0 0 0 ? S 01:53 0:00 [kworker/4:1]
root 122 0.0 0.0 0 0 ? S 01:53 0:00 [kworker/5:1]
root 123 0.0 0.0 0 0 ? S 01:53 0:00 [kworker/3:1]
root 181 0.0 0.0 0 0 ? S 01:53 0:00 [kworker/0:1]
root 184 0.0 0.0 0 0 ? S 01:53 0:00 [scsi_eh_2]
root 185 0.0 0.0 0 0 ? S< 01:53 0:00 [vmw_pvscsi_wq_2]
root 186 0.0 0.0 0 0 ? S< 01:53 0:00 [kpsmoused]
root 187 0.0 0.0 0 0 ? S 01:53 0:00 [kworker/6:1]
root 197 0.0 0.0 0 0 ? S 01:53 0:01 [kworker/1:1]
root 198 0.0 0.0 0 0 ? S 01:53 0:00 [kworker/7:2]
root 199 0.0 0.0 0 0 ? S< 01:53 0:00 [kdmflush]
root 200 0.0 0.0 0 0 ? S< 01:53 0:00 [bioset]
root 202 0.0 0.0 0 0 ? S< 01:53 0:00 [kdmflush]
root 203 0.0 0.0 0 0 ? S< 01:53 0:00 [bioset]
root 218 0.0 0.0 0 0 ? S 01:53 0:00 [jbd2/dm-0-8]
root 219 0.0 0.0 0 0 ? S< 01:53 0:00 [ext4-rsv-conver]
root 371 0.0 0.0 19476 916 ? S 01:53 0:00 upstart-udev-bridge --daemon
root 373 0.0 0.0 0 0 ? S< 01:53 0:00 [ext4-rsv-conver]
root 382 0.0 0.0 51568 1908 ? Ss 01:53 0:00 /lib/systemd/systemd-udevd --daemon
root 429 0.0 0.0 15276 396 ? S 01:53 0:00 upstart-file-bridge --daemon
syslog 477 0.0 0.0 255844 2460 ? Ssl 01:53 0:00 rsyslogd
root 490 0.0 0.0 0 0 ? S< 01:53 0:00 [ttm_swap]
message+ 527 0.0 0.0 39224 1280 ? Ss 01:53 0:00 dbus-daemon --system --fork
root 548 0.0 0.0 43452 1840 ? Ss 01:53 0:00 /lib/systemd/systemd-logind
root 588 0.0 0.0 15260 412 ? S 01:53 0:00 upstart-socket-bridge --daemon
root 915 0.0 0.0 15820 952 tty4 Ss+ 01:53 0:00 /sbin/getty -8 38400 tty4
root 918 0.0 0.0 15820 960 tty5 Ss+ 01:53 0:00 /sbin/getty -8 38400 tty5
root 923 0.0 0.0 15820 964 tty2 Ss+ 01:53 0:00 /sbin/getty -8 38400 tty2
root 924 0.0 0.0 15820 952 tty3 Ss+ 01:53 0:00 /sbin/getty -8 38400 tty3
root 926 0.0 0.0 15820 952 tty6 Ss+ 01:53 0:00 /sbin/getty -8 38400 tty6
root 947 0.0 0.1 61364 3084 ? Ss 01:53 0:00 /usr/sbin/sshd -D
root 952 0.0 0.0 4368 676 ? Ss 01:53 0:00 acpid -c /etc/acpi/events -s /var/run/acpid.socket
root 958 0.0 0.0 23656 944 ? Ss 01:53 0:00 cron
daemon 959 0.0 0.0 19140 160 ? Ss 01:53 0:00 atd
root 977 0.0 0.0 19288 804 ? Ss 01:53 0:02 /usr/sbin/irqbalance
icecast 986 4.0 0.5 308580 17368 ? S<l 01:53 23:08 /usr/local/bin/icecast -b -c /usr/local/etc/icecast.xml
root 1084 0.0 0.0 15820 948 tty1 Ss+ 01:53 0:00 /sbin/getty -8 38400 tty1
root 1214 0.0 0.0 0 0 ? S 01:53 0:00 [kauditd]
ntp 1256 0.0 0.0 31448 2128 ? Ss 01:53 0:01 /usr/sbin/ntpd -p /var/run/ntpd.pid -g -u 105:112
root 2472 0.0 0.0 0 0 ? S< 04:52 0:00 [kworker/u17:1]
root 4988 0.0 0.0 0 0 ? S 10:56 0:00 [kworker/u16:0]
root 5093 0.0 0.0 0 0 ? S 11:13 0:00 [kworker/u16:2]
root 5151 0.0 0.1 99440 4172 ? Ss 11:22 0:00 sshd: root@pts/0
root 5153 0.1 0.1 22380 3588 pts/0 Ss 11:22 0:00 -bash
root 5171 0.0 0.0 18448 1304 pts/0 R+ 11:22 0:00 ps aux