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Minimal Ubuntu on VMWare VPS? :(
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Minimal Ubuntu on VMWare VPS? :(

gianggiang Veteran
edited December 2011 in General

Hi guys,

I was trying to get my VPS minimal but I couldn't find any helpful guide to do it myself :( I follow OpenVZ guide on ubuntu Wiki but it didn't help much.

My VPS is using 100MB after I did:

sudo apt-get purge wpasupplicant xkb-data tasksel tasksel-data console-setup dmidecode eject ethtool laptop-detect mii-diag ntpdate pciutils pcmciautils ubuntu-minimal usbutils wireless-tools

sudo apt-get autoremove

initctl stop tty1
initctl stop tty2
initctl stop tty3
initctl stop tty4
initctl stop tty5
initctl stop tty6
rm /etc/event.d/tty*
rm /etc/init/tty*

How to get the RAM usage to about 10MB as we seen on another VPS Platform (OpenVZ, Xen...)

Many thanks,

«1

Comments

  • VMware is full virtualisation, opposed to OpenVZ and some other. This means you run an own instance of your kernel for example, so you will never get as low mem.usage as with openVZ.

    On the other side; there used to float an minimal script over at LEB.com I mean. Designet to remove everything not needed. Would try that if I were you.

  • I've already install LES with bash setup-debian.sh system but memory is still high :D

  • Ehm...

    A ps aux, htop, capture?

  • gianggiang Veteran
    edited December 2011

    ps aux

    
    USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
    root         1  0.0  0.1   2888  1684 ?        Ss   10:17   0:01 /sbin/init
    root         2  0.0  0.0      0     0 ?        S    10:17   0:00 [kthreadd]
    root         3  0.0  0.0      0     0 ?        S    10:17   0:01 [ksoftirqd/0]
    root         5  0.0  0.0      0     0 ?        S    10:17   0:00 [kworker/u:0]
    root         6  0.0  0.0      0     0 ?        S    10:17   0:00 [migration/0]
    root         7  0.0  0.0      0     0 ?        S    10:17   0:00 [migration/1]
    root         8  0.0  0.0      0     0 ?        S    10:17   0:00 [kworker/1:0]
    root         9  0.0  0.0      0     0 ?        S    10:17   0:01 [ksoftirqd/1]
    root        10  0.0  0.0      0     0 ?        S    10:17   0:00 [kworker/0:1]
    root        11  0.0  0.0      0     0 ?        S<   10:17   0:00 [cpuset]
    root        12  0.0  0.0      0     0 ?        S<   10:17   0:00 [khelper]
    root        13  0.0  0.0      0     0 ?        S<   10:17   0:00 [netns]
    root        14  0.0  0.0      0     0 ?        S    10:17   0:00 [kworker/u:1]
    root        15  0.0  0.0      0     0 ?        S    10:17   0:00 [sync_supers]
    root        16  0.0  0.0      0     0 ?        S    10:17   0:00 [bdi-default]
    root        17  0.0  0.0      0     0 ?        S<   10:17   0:00 [kintegrityd]
    root        18  0.0  0.0      0     0 ?        S<   10:17   0:00 [kblockd]
    root        19  0.0  0.0      0     0 ?        S<   10:17   0:00 [kacpid]
    root        20  0.0  0.0      0     0 ?        S<   10:17   0:00 [kacpi_notify]
    root        21  0.0  0.0      0     0 ?        S<   10:17   0:00 [kacpi_hotplug]
    root        22  0.0  0.0      0     0 ?        S<   10:17   0:00 [ata_sff]
    root        23  0.0  0.0      0     0 ?        S    10:17   0:00 [khubd]
    root        24  0.0  0.0      0     0 ?        S<   10:17   0:00 [md]
    root        26  0.0  0.0      0     0 ?        S    10:17   0:00 [khungtaskd]
    root        27  0.0  0.0      0     0 ?        S    10:17   0:00 [kswapd0]
    root        28  0.0  0.0      0     0 ?        SN   10:17   0:00 [ksmd]
    root        29  0.0  0.0      0     0 ?        S    10:17   0:00 [fsnotify_mark]
    root        30  0.0  0.0      0     0 ?        S<   10:17   0:00 [aio]
    root        31  0.0  0.0      0     0 ?        S    10:17   0:00 [ecryptfs-kthr]
    root        32  0.0  0.0      0     0 ?        S<   10:17   0:00 [crypto]
    root        36  0.0  0.0      0     0 ?        S<   10:17   0:00 [kthrotld]
    root        37  0.0  0.0      0     0 ?        S    10:17   0:00 [scsi_eh_0]
    root        38  0.0  0.0      0     0 ?        S    10:17   0:00 [scsi_eh_1]
    root        40  0.0  0.0      0     0 ?        S<   10:17   0:00 [kmpathd]
    root        41  0.0  0.0      0     0 ?        S<   10:17   0:00 [kmpath_handle]
    root        42  0.0  0.0      0     0 ?        S<   10:17   0:00 [kondemand]
    root        43  0.0  0.0      0     0 ?        S<   10:17   0:00 [kconservative]
    root        45  0.0  0.0      0     0 ?        S    10:17   0:00 [kworker/0:2]
    root        88  0.0  0.0      0     0 ?        S    10:17   0:00 [kworker/1:2]
    root       230  0.0  0.0      0     0 ?        S<   10:17   0:00 [mpt_poll_0]
    root       231  0.0  0.0      0     0 ?        S<   10:17   0:00 [mpt/0]
    root       279  0.0  0.0      0     0 ?        S    10:17   0:00 [scsi_eh_2]
    root       293  0.0  0.0      0     0 ?        S<   10:17   0:00 [kdmflush]
    root       302  0.0  0.0      0     0 ?        S<   10:17   0:00 [kdmflush]
    root       316  0.0  0.0      0     0 ?        S    10:17   0:00 [jbd2/dm-1-8]
    root       317  0.0  0.0      0     0 ?        S<   10:17   0:00 [ext4-dio-unwr]
    root       366  0.0  0.0   2412   872 ?        S    10:17   0:00 upstart-udev-br
    root       376  0.0  0.0   2552   808 ?        S < s  10:17   0:00 udevd --daemon
    root       452  0.0  0.0   2548   696 ?        S<   10:17   0:00 udevd --daemon
    root       453  0.0  0.0   2548   704 ?        S<   10:17   0:00 udevd --daemon
    root       495  0.0  0.0      0     0 ?        S    10:17   0:00 [jbd2/sda1-8]
    root       501  0.0  0.0      0     0 ?        S<   10:17   0:00 [ext4-dio-unwr]
    root       515  0.0  0.0      0     0 ?        S<   10:17   0:00 [kpsmoused]
    root       594  0.0  0.0      0     0 ?        S<   10:17   0:00 [vmmemctl]
    root       683  0.0  0.0   2412   596 ?        S    10:17   0:00 upstart-socket-
    root       755  0.0  0.0   3156   652 ?        Ss   10:17   0:00 /usr/sbin/irqba
    daemon     757  0.0  0.0   2132   344 ?        Ss   10:17   0:00 atd
    root       758  0.0  0.0   2268   760 ?        Ss   10:17   0:00 cron
    root       819  0.0  0.2   5652  2252 ?        Ss   10:17   0:00 /usr/sbin/sshd
    root       894  0.0  0.2   6084  3060 ?        S    10:17   0:02 /usr/sbin/vmtoo
    root       944  0.0  0.0   1928   684 ?        S    10:17   0:00 /usr/sbin/syslo
    root       963  0.0  0.3   8552  3288 ?        Ss   10:18   0:00 sshd: root@pts/
    root       989  0.0  0.3   6740  3448 pts/0    Ss   10:18   0:00 -bash
    root      1128  0.0  0.0   4984   992 pts/0    S+   10:35   0:00 screen
    root      1129  0.0  0.1   5248  1544 ?        Ss   10:35   0:00 SCREEN
    root      1130  0.0  0.1   5368  1984 pts/1    Ss+  10:35   0:00 /bin/bash
    root      1140  0.0  0.0      0     0 ?        S    10:35   0:00 [flush-251:1]
    root     21069  2.1  0.3   8552  3292 ?        Ss   11:32   0:00 sshd: root@pts/
    root     21095  2.6  0.3   6740  3444 pts/2    Ss   11:32   0:00 -bash
    root     21150  0.0  0.1   4704  1196 pts/2    R+   11:32   0:00 ps aux 

    htop
    http://i.imgur.com/EiZTR.png

  • I don't know wth is that irqbalance, what happens if you kill it? :P

    Also, VMWare tools isn't needed if you are not using a GUI, IMHO.
    Also, atd? What's that? Like a cron? Shutdown xD.
    Hmmm, there is some screen running.
    Upstart-socket-bridge??? Wow ubuntu ¬¬

    All these probably will save you another 10MB

    I am about to suggest you to clean your cache, but that screenshot has only one hour since boot, so, not yet.

  • japonjapon Member
    edited December 2011

    @yomero said: I don't know wth is that irqbalance, what happens if you kill it? :P

    If you've more than 1 core and kill irqbalance you disable the distribution of interrupts. Means: everything i/o- and memory-specific is handled only by first core and thus lower performance. You don't need it on OVZ, but I dunno about VMWare? I guess VMWare is in-transparent like KVM, so then you might need it.

  • I'm 99.9% sure that IRQ balancing is handled natively in the kernel nowadays. You can cat /proc/interrupts without irqbalance running. If all interrupts are happening on one CPU#, then your kernel is not handling it, and you need to keep it running.

  • Remove open-ssh and change it to dropbear, if you're using bash change it to dash (its a default now on debian 6).

    Also are you running a 32 or 64 bit OS?

  • @Damian4IPXcore said: I'm 99.9% sure that IRQ balancing is handled natively in the kernel nowadays.

    I think so

  • japonjapon Member
    edited December 2011

    @Damian4IPXcore said: I'm 99.9% sure that IRQ balancing is handled natively in the kernel nowadays.

    I thought so, too, but then I found this:

    IRQ balancing is deprecated in the Kernel and should not be enabled by default.

    See http://www.kerneltrap.org/mailarchive/linux-kernel/2007/10/23/351370/thread

    Also see the 2.6-kernel post-halloween document:

    Balancing of IRQs between multiple CPUs should be handled using the

    irqbalance (http://people.redhat.com/arjanv/irqbalance/) program.

  • I'm trying to remove vmtoolsd but got no luck :(

    Just check mem usage by type free -m and it is 670/1000 now :O I've installed or uninstalled anything till now :-s

  • yomeroyomero Member
    edited December 2011

    @japon Some links are broken o_O

    Well, interesting finding but, really it will affect the performance? There is some benchamrk with or without it? Probably the difference is very very minimal (and probably the amount of saved RAM without that program too, hehe).

    @giang said: Just check mem usage by type free -m and it is 670/1000 now :O I've installed or uninstalled anything till now :-s

    Ehm, sure??? Or after several months in this, you still don't understand:

    http://www.linuxatemyram.com/

    ¬_¬!!

  • @giang said:

    htop

    http://i.imgur.com/EiZTR.png

    It uses 41 MB. That's normal.

  • @breton said: It uses 41 MB. That's normal.

    It was 480/1000 with the last time I checked with htop :O

  • netpioneernetpioneer Member
    edited December 2011

    VMWare: Debian 6 64-bit + Lighttpd + Bind + Syslog-NG + SSH = 70MB

  • DON'T remove vmware tools.

  • @justinb said: DON'T remove vmware tools.

    Don't worry, I still have no idea how to remove it :D

    @netpioneer said: VMWare: Debian 6 64-bit + Lighttpd + Bind + Syslog-NG + SSH = 70MB

    Would you please give me more details? Which packages removed, etc...?

  • ps_mem.py
     Private  +   Shared  =  RAM used       Program 
    
      4.0 KiB +   8.5 KiB =  12.5 KiB       acpid
      8.0 KiB +  46.5 KiB =  54.5 KiB       mysqld_safe
     56.0 KiB +  21.0 KiB =  77.0 KiB       mingetty (2)
    100.0 KiB +  52.0 KiB = 152.0 KiB       exim
    124.0 KiB +  32.0 KiB = 156.0 KiB       init
     76.0 KiB +  94.0 KiB = 170.0 KiB       udevd (3)
    188.0 KiB + 101.5 KiB = 289.5 KiB       ping
    448.0 KiB +  71.0 KiB = 519.0 KiB       syslog-ng (2)
    352.0 KiB + 295.5 KiB = 647.5 KiB       crond (2)
    480.0 KiB + 483.0 KiB = 963.0 KiB       bash (2)
    812.0 KiB + 534.5 KiB =   1.3 MiB       sshd (2)
      2.1 MiB + 364.5 KiB =   2.4 MiB       openstatus-clie
      4.0 MiB + 469.5 KiB =   4.5 MiB       nginx (2)
      6.1 MiB +   1.2 MiB =   7.2 MiB       php
     17.9 MiB + 182.0 KiB =  18.0 MiB       mysqld
      9.7 MiB +   9.4 MiB =  19.1 MiB       php-fpm (3)
    ---------------------------------
                             55.6 MiB
    =================================
    
     Private  +   Shared  =  RAM used       Program 

    Scientific Linux 6 on a 128mb KVM using my setup script and with APC added.

  • @giang said: Don't worry, I still have no idea how to remove it :D

    Famous last words: "What does this button do?"

  • @dmmcintyre3 said: Scientific Linux 6 on a 128mb KVM using my setup script and with APC added.

    It's Ubuntu :(

    @drmike said: Famous last words: "What does this button do?"

    I only got SSH access, there is no console, I have no idea what button you're talking about? :P

  • japonjapon Member
    edited December 2011

    @yomero said: @japon Some links are broken o_O

    I can reach them without problems. Are you sure you don't have some kind of firewall/routing issue?

    See more here: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.0/html/Realtime_Tuning_Guide/sect-Realtime_Tuning_Guide-General_System_Tuning-Interrupt_and_Process_Binding.html

  • subsubsubsub Member
    edited December 2011

    Ubuntu 10.04.3 LTS x86 3.0.0-14-virtual KVM 512MB 1CPU - No Load

    Still got some tweakage to do on this, fresh install last night; crazy swap size since I didn't want to risk messing with the installer any after having sh17loads of problems with it hanging over VNC.

    ps_mem.py

    Private  +   Shared  =  RAM used    Program 
    
    108.0 KiB +  19.5 KiB = 127.5 KiB   uptimed
    100.0 KiB +  46.5 KiB = 146.5 KiB   getty
    156.0 KiB +  44.0 KiB = 200.0 KiB   vnstatd
    200.0 KiB +  71.0 KiB = 271.0 KiB   cron
    292.0 KiB + 169.0 KiB = 461.0 KiB   upstart-udev-bridge
    460.0 KiB +  37.5 KiB = 497.5 KiB   dbus-daemon
    656.0 KiB +  67.0 KiB = 723.0 KiB   openvpn
    688.0 KiB +  47.5 KiB = 735.5 KiB   redis-server
    548.0 KiB + 223.0 KiB = 771.0 KiB   init
    604.0 KiB + 489.0 KiB =   1.1 MiB   udevd (3)
    900.0 KiB + 564.0 KiB =   1.4 MiB   syslog-ng (2)
      1.6 MiB + 734.0 KiB =   2.3 MiB   nginx (5)
      2.6 MiB + 104.5 KiB =   2.7 MiB   bash
      1.3 MiB +   1.5 MiB =   2.8 MiB   sshd (3)
     12.1 MiB +  95.5 KiB =  12.2 MiB   mongod
    ---------------------------------
                             26.3 MiB
    =================================
    

    free -m

                 total       used       free     shared    buffers     cached
    Mem:           495         87        408          0         12         43
    -/+ buffers/cache:         31        464
    Swap:         1101          0       1101
    
  • free -m now

                 total       used       free     shared    buffers     cached
    Mem:          1001        106        894          0         10         59
    -/+ buffers/cache:         36        964
    Swap:          951          0        951
    
  • @giang said: free -m now

    Exactly n_n

  • @yomero said: Exactly n_n

    About 1 hour later, it will be:

    -/+ buffers/cache:         700        301

    :-s

  • Maybe later you can take a look at the 'top' output. Probably is a kind of 'balloning' or something like that?

  • @yomero said: Maybe later you can take a look at the 'top' output. Probably is a kind of 'balloning' or something like that?

    How do I know it is 'balloning" or not? :-s It's vmware, not xen pv :-s

    Here is top output now:

    top - 11:34:00 up 51 min,  1 user,  load average: 0.00, 0.01, 0.05
    Tasks:  71 total,   1 running,  70 sleeping,   0 stopped,   0 zombie
    Cpu(s):  0.0%us,  0.0%sy,  0.0%ni,100.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:   1025724k total,   143824k used,   881900k free,    12412k buffers
    Swap:   974844k total,        0k used,   974844k free,    77704k cached
    
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
     1102 root      20   0  9384 3384 2780 S    0  0.3   0:00.29 sshd
     1228 root      20   0  2788 1116  868 R    0  0.1   0:00.05 top
        1 root      20   0  3192 1728 1252 S    0  0.2   0:01.28 init
        2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd
        3 root      20   0     0    0    0 S    0  0.0   0:00.00 ksoftirqd/0
        5 root      20   0     0    0    0 S    0  0.0   0:00.98 kworker/u:0
        6 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/0
        7 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/1
        9 root      20   0     0    0    0 S    0  0.0   0:00.01 ksoftirqd/1
       10 root      20   0     0    0    0 S    0  0.0   0:00.04 kworker/0:1
       11 root       0 -20     0    0    0 S    0  0.0   0:00.00 cpuset
       12 root       0 -20     0    0    0 S    0  0.0   0:00.00 khelper
       13 root       0 -20     0    0    0 S    0  0.0   0:00.00 netns
       14 root      20   0     0    0    0 S    0  0.0   0:00.00 kworker/u:1
       15 root      20   0     0    0    0 S    0  0.0   0:00.00 sync_supers
       16 root      20   0     0    0    0 S    0  0.0   0:00.00 bdi-default
       17 root       0 -20     0    0    0 S    0  0.0   0:00.00 kintegrityd
       18 root       0 -20     0    0    0 S    0  0.0   0:00.00 kblockd
       19 root       0 -20     0    0    0 S    0  0.0   0:00.00 ata_sff
       20 root      20   0     0    0    0 S    0  0.0   0:00.00 khubd
       21 root       0 -20     0    0    0 S    0  0.0   0:00.00 md
       22 root      20   0     0    0    0 S    0  0.0   0:00.14 kworker/1:1
       24 root      20   0     0    0    0 S    0  0.0   0:00.00 khungtaskd
       25 root      20   0     0    0    0 S    0  0.0   0:00.00 kswapd0
       26 root      25   5     0    0    0 S    0  0.0   0:00.00 ksmd
       27 root      39  19     0    0    0 S    0  0.0   0:00.00 khugepaged
       28 root      20   0     0    0    0 S    0  0.0   0:00.00 fsnotify_mark
       29 root      20   0     0    0    0 S    0  0.0   0:00.00 ecryptfs-kthrea
       30 root       0 -20     0    0    0 S    0  0.0   0:00.00 crypto
       38 root       0 -20     0    0    0 S    0  0.0   0:00.00 kthrotld
       39 root      20   0     0    0    0 S    0  0.0   0:00.00 scsi_eh_0
       40 root      20   0     0    0    0 S    0  0.0   0:00.02 scsi_eh_1
       61 root      20   0     0    0    0 S    0  0.0   0:00.01 kworker/0:2
       96 root      20   0     0    0    0 S    0  0.0   0:00.00 kworker/1:2
      166 root       0 -20     0    0    0 S    0  0.0   0:00.00 mpt_poll_0
      178 root       0 -20     0    0    0 S    0  0.0   0:00.00 mpt/0
      223 root      20   0     0    0    0 S    0  0.0   0:00.00 scsi_eh_2
      236 root       0 -20     0    0    0 S    0  0.0   0:00.00 kdmflush
      243 root       0 -20     0    0    0 S    0  0.0   0:00.00 kdmflush
      257 root      20   0     0    0    0 S    0  0.0   0:00.17 jbd2/dm-1-8
      258 root       0 -20     0    0    0 S    0  0.0   0:00.00 ext4-dio-unwrit
      306 root      20   0  2648  612  452 S    0  0.1   0:00.05 upstart-udev-br
      311 root      20   0  2764 1164  724 S    0  0.1   0:00.04 udevd
      386 root      20   0  2756  616  304 S    0  0.1   0:00.00 udevd
      387 root      20   0  2756  616  304 S    0  0.1   0:00.00 udevd
  • I said, a kind of, or something. Also:

    http://www.google.com/search?q=vmware+ballooning

    And do it later, when you experiment the problem. Now seems fine

  • @yomero said: I said, a kind of, or something. Also:

    http://www.google.com/search?q=vmware+ballooning

    And do it later, when you experiment the problem. Now seems fine

    Thank you. I'm still waiting @_@

  • New top output:

    top - 13:34:34 up  2:52,  1 user,  load average: 0.00, 0.01, 0.05
    Tasks:  74 total,   1 running,  73 sleeping,   0 stopped,   0 zombie
    Cpu(s):  0.0%us,  0.2%sy,  0.0%ni, 99.8%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:   1025724k total,   400440k used,   625284k free,    15152k buffers
    Swap:   974844k total,        0k used,   974844k free,    86460k cached
    
      PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
     1014 root      20   0 24428 3444 2848 S    0  0.3   0:06.27 vmtoolsd
        1 root      20   0  3192 1728 1252 S    0  0.2   0:01.30 init
        2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd
        3 root      20   0     0    0    0 S    0  0.0   0:00.02 ksoftirqd/0
        5 root      20   0     0    0    0 S    0  0.0   0:02.19 kworker/u:0
        6 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/0
        7 root      RT   0     0    0    0 S    0  0.0   0:00.00 migration/1
        9 root      20   0     0    0    0 S    0  0.0   0:00.02 ksoftirqd/1
       10 root      20   0     0    0    0 S    0  0.0   0:00.08 kworker/0:1
       11 root       0 -20     0    0    0 S    0  0.0   0:00.00 cpuset
       12 root       0 -20     0    0    0 S    0  0.0   0:00.00 khelper
       13 root       0 -20     0    0    0 S    0  0.0   0:00.00 netns
       14 root      20   0     0    0    0 S    0  0.0   0:00.01 kworker/u:1
       15 root      20   0     0    0    0 S    0  0.0   0:00.02 sync_supers
       16 root      20   0     0    0    0 S    0  0.0   0:00.00 bdi-default
       17 root       0 -20     0    0    0 S    0  0.0   0:00.00 kintegrityd
       18 root       0 -20     0    0    0 S    0  0.0   0:00.00 kblockd
       19 root       0 -20     0    0    0 S    0  0.0   0:00.00 ata_sff
       20 root      20   0     0    0    0 S    0  0.0   0:00.00 khubd
       21 root       0 -20     0    0    0 S    0  0.0   0:00.00 md
       22 root      20   0     0    0    0 S    0  0.0   0:00.24 kworker/1:1
       24 root      20   0     0    0    0 S    0  0.0   0:00.00 khungtaskd
       25 root      20   0     0    0    0 S    0  0.0   0:00.00 kswapd0
       26 root      25   5     0    0    0 S    0  0.0   0:00.00 ksmd
       27 root      39  19     0    0    0 S    0  0.0   0:00.00 khugepaged
       28 root      20   0     0    0    0 S    0  0.0   0:00.00 fsnotify_mark
       29 root      20   0     0    0    0 S    0  0.0   0:00.00 ecryptfs-kthrea
       30 root       0 -20     0    0    0 S    0  0.0   0:00.00 crypto
       38 root       0 -20     0    0    0 S    0  0.0   0:00.00 kthrotld
       39 root      20   0     0    0    0 S    0  0.0   0:00.00 scsi_eh_0
       40 root      20   0     0    0    0 S    0  0.0   0:00.02 scsi_eh_1
       61 root      20   0     0    0    0 S    0  0.0   0:00.01 kworker/0:2
       96 root      20   0     0    0    0 S    0  0.0   0:00.00 kworker/1:2
      166 root       0 -20     0    0    0 S    0  0.0   0:00.00 mpt_poll_0
      178 root       0 -20     0    0    0 S    0  0.0   0:00.00 mpt/0
      223 root      20   0     0    0    0 S    0  0.0   0:00.00 scsi_eh_2
      236 root       0 -20     0    0    0 S    0  0.0   0:00.00 kdmflush
      243 root       0 -20     0    0    0 S    0  0.0   0:00.00 kdmflush
      257 root      20   0     0    0    0 S    0  0.0   0:00.35 jbd2/dm-1-8
      258 root       0 -20     0    0    0 S    0  0.0   0:00.00 ext4-dio-unwrit
      306 root      20   0  2648  612  452 S    0  0.1   0:00.05 upstart-udev-br
      311 root      20   0  2764 1164  724 S    0  0.1   0:00.04 udevd
      386 root      20   0  2756  616  304 S    0  0.1   0:00.00 udevd
      387 root      20   0  2756  616  304 S    0  0.1   0:00.00 udevd
      464 root       0 -20     0    0    0 S    0  0.0   0:00.00 kpsmoused
    
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