我的系统有 6 个超线程核心和 64GB RAM，刚刚使用 KVM 启动了 14.04，我看到平均负载超过 50，只安装了 VM。没有高 CPU，没有高 I/O，只是平均负载很疯狂。它也到处波动。
非常感谢任何关于去哪里看的建议
以下是顶部：
top - 15:26:40 up 1:12, 4 users, load average: 13.88, 43.19, 47.55
Tasks: 317 total, 2 running, 315 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.5 us, 0.2 sy, 0.0 ni, 99.3 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 65875788 total, 3212520 used, 62663268 free, 46440 buffers
KiB Swap: 67006460 total, 0 used, 67006460 free. 930788 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1799 root 20 0 967124 28012 16468 S 2.7 0.0 1:52.95 libvirtd
3117 clayj 20 0 1812296 125540 75520 S 1.3 0.2 0:47.47 compiz
3413 clayj 20 0 824264 78264 42104 S 1.0 0.1 0:42.36 python
96 root 25 5 0 0 0 S 0.7 0.0 0:14.71 ksmd
1909 root 20 0 334452 52452 32264 S 0.7 0.1 0:41.59 Xorg
2589 clayj 20 0 566476 27648 22384 S 0.7 0.0 0:26.33 psensor
3332 clayj 20 0 687624 33600 24828 S 0.7 0.1 0:58.30 psensor
25 root 20 0 0 0 0 S 0.3 0.0 0:00.79 rcuos/2
781 root 0 -20 0 0 0 S 0.3 0.0 0:07.82 kworker/4:+
2836 clayj 20 0 40112 3452 2144 S 0.3 0.0 0:00.80 dbus-daemon
2966 clayj 20 0 492636 27664 19716 S 0.3 0.0 0:01.01 unity-pane+
3452 libvirt+ 20 0 6976880 1.284g 16872 S 0.3 2.0 2:06.23 qemu-syste+
8860 clayj 20 0 25076 3064 2432 R 0.3 0.0 0:02.23 top
10110 clayj 20 0 25080 3128 2496 R 0.3 0.0 0:00.14 top
1 root 20 0 34104 4700 2692 S 0.0 0.0 0:00.98 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
以下是 PS
clayj@VMHOST1:~$ ps ax
PID TTY STAT TIME COMMAND
1 ? Ss 0:00 /sbin/init
2 ? S 0:00 [kthreadd]
3 ? S 0:00 [ksoftirqd/0]
5 ? S< 0:00 [kworker/0:0H]
7 ? S 0:04 [rcu_sched]
8 ? S 0:00 [rcu_bh]
9 ? S 0:04 [rcuos/0]
10 ? S 0:00 [rcuob/0]
11 ? S 0:00 [migration/0]
12 ? S 0:00 [watchdog/0]
13 ? S 0:00 [watchdog/1]
14 ? S 0:00 [migration/1]
15 ? S 0:00 [ksoftirqd/1]
16 ? S 0:00 [kworker/1:0]
17 ? S< 0:00 [kworker/1:0H]
18 ? S 0:00 [rcuos/1]
19 ? S 0:00 [rcuob/1]
20 ? S 0:00 [watchdog/2]
21 ? S 0:00 [migration/2]
22 ? S 0:00 [ksoftirqd/2]
23 ? S 0:00 [kworker/2:0]
24 ? S< 0:00 [kworker/2:0H]
25 ? S 0:00 [rcuos/2]
26 ? S 0:00 [rcuob/2]
27 ? S 0:00 [watchdog/3]
28 ? S 0:00 [migration/3]
29 ? S 0:00 [ksoftirqd/3]
31 ? S< 0:00 [kworker/3:0H]
32 ? S 0:03 [rcuos/3]
33 ? S 0:00 [rcuob/3]
34 ? S 0:00 [watchdog/4]
35 ? S 0:00 [migration/4]
36 ? S 0:00 [ksoftirqd/4]
37 ? S 0:00 [kworker/4:0]
38 ? S< 0:00 [kworker/4:0H]
39 ? S 0:00 [rcuos/4]
40 ? S 0:00 [rcuob/4]
41 ? S 0:00 [watchdog/5]
42 ? S 0:00 [migration/5]
43 ? S 0:00 [ksoftirqd/5]
45 ? S< 0:00 [kworker/5:0H]
46 ? S 0:00 [rcuos/5]
47 ? S 0:00 [rcuob/5]
48 ? S 0:00 [watchdog/6]
49 ? S 0:00 [migration/6]
50 ? S 0:00 [ksoftirqd/6]
51 ? S 0:00 [kworker/6:0]
52 ? S< 0:00 [kworker/6:0H]
53 ? S 0:00 [rcuos/6]
54 ? S 0:00 [rcuob/6]
55 ? S 0:00 [watchdog/7]
56 ? S 0:00 [migration/7]
57 ? S 0:00 [ksoftirqd/7]
58 ? S 0:00 [kworker/7:0]
59 ? S< 0:00 [kworker/7:0H]
60 ? S 0:00 [rcuos/7]
61 ? S 0:00 [rcuob/7]
62 ? S 0:00 [watchdog/8]
63 ? S 0:00 [migration/8]
64 ? S 0:00 [ksoftirqd/8]
65 ? S 0:00 [kworker/8:0]
66 ? S< 0:00 [kworker/8:0H]
67 ? S 0:00 [rcuos/8]
68 ? S 0:00 [rcuob/8]
69 ? S 0:00 [watchdog/9]
70 ? S 0:00 [migration/9]
71 ? S 0:00 [ksoftirqd/9]
72 ? S 0:00 [kworker/9:0]
73 ? S< 0:00 [kworker/9:0H]
74 ? S 0:00 [rcuos/9]
75 ? S 0:00 [rcuob/9]
76 ? S 0:00 [watchdog/10]
77 ? S 0:00 [migration/10]
78 ? S 0:00 [ksoftirqd/10]
79 ? S 0:00 [kworker/10:0]
80 ? S< 0:00 [kworker/10:0H]
81 ? S 0:00 [rcuos/10]
82 ? S 0:00 [rcuob/10]
83 ? S 0:00 [watchdog/11]
84 ? S 0:00 [migration/11]
85 ? S 0:00 [ksoftirqd/11]
86 ? S 0:00 [kworker/11:0]
87 ? S< 0:00 [kworker/11:0H]
88 ? S 0:00 [rcuos/11]
89 ? S 0:00 [rcuob/11]
90 ? S< 0:00 [khelper]
91 ? S 0:00 [kdevtmpfs]
92 ? S< 0:00 [netns]
93 ? S< 0:00 [perf]
94 ? S 0:00 [khungtaskd]
95 ? S< 0:00 [writeback]
96 ? SN 0:15 [ksmd]
97 ? SN 0:00 [khugepaged]
98 ? S< 0:00 [crypto]
99 ? S< 0:00 [kintegrityd]
100 ? S< 0:00 [bioset]
101 ? S< 0:00 [kblockd]
102 ? S< 0:00 [ata_sff]
103 ? S< 0:00 [md]
104 ? S< 0:00 [devfreq_wq]
105 ? S 0:00 [kworker/u24:1]
106 ? S 0:00 [kworker/0:1]
108 ? S 0:00 [kswapd0]
109 ? S< 0:00 [vmstat]
110 ? S 0:00 [fsnotify_mark]
111 ? S 0:00 [ecryptfs-kthrea]
122 ? S< 0:00 [kthrotld]
123 ? S< 0:00 [acpi_thermal_pm]
124 ? S 0:00 [kworker/11:1]
125 ? S 0:01 [kworker/4:1]
129 ? S< 0:00 [ipv6_addrconf]
150 ? S< 0:00 [deferwq]
151 ? S< 0:00 [charger_manager]
161 ? S 0:00 [kworker/7:1]
215 ? S< 0:00 [kpsmoused]
217 ? S 0:00 [scsi_eh_0]
218 ? S< 0:00 [scsi_tmf_0]
219 ? S 0:00 [kworker/u24:3]
220 ? S 0:00 [kworker/3:1]
221 ? S 0:00 [kworker/5:1]
225 ? S 0:00 [kworker/2:3]
229 ? S 0:00 [kworker/9:1]
230 ? S 0:00 [kworker/1:1]
232 ? S< 0:00 [ttm_swap]
275 ? S< 0:00 [bioset]
284 ? S 0:00 [jbd2/sda2-8]
285 ? S< 0:00 [ext4-rsv-conver]
298 ? S 0:00 [kworker/10:1]
317 ? S 0:00 [kworker/8:1]
323 ? S< 0:00 [kworker/0:1H]
465 ? S< 0:00 [kworker/2:1H]
476 ? S 0:00 upstart-udev-bridge --daemon
482 ? Ss 0:00 /lib/systemd/systemd-udevd --daemon
631 ? S< 0:00 [rpciod]
641 ? S< 0:00 [nfsiod]
644 ? S< 0:00 [edac-poller]
647 ? S 0:00 [irq/50-mei_me]
664 ? S< 0:00 [kworker/9:1H]
692 ? Ss 0:00 rpc.idmapd
694 ? Ss 0:00 dbus-daemon --system --fork
750 ? S< 0:00 [kvm-irqfd-clean]
759 ? S< 0:00 [led_workqueue]
773 ? Ss 0:00 /usr/sbin/bluetoothd
781 ? S< 0:08 [kworker/4:1H]
792 ? Ss 0:00 /lib/systemd/systemd-logind
793 ? Ssl 0:00 rsyslogd
796 ? S 0:00 avahi-daemon: running [VMHOST1.local]
801 ? S 0:00 avahi-daemon: chroot helper
814 ? S< 0:00 [krfcommd]
825 ? S 0:00 [kworker/6:3]
1003 ? S 0:00 upstart-file-bridge --daemon
1044 ? Ss 0:00 smbd -F
1051 ? Ss 0:00 rpcbind
1057 ? Ss 0:00 rpc.statd -L
1069 ? S 0:00 upstart-socket-bridge --daemon
1184 ? S 0:00 smbd -F
1205 ? Ss 0:00 /usr/sbin/winbindd -F
1212 ? Ss 0:00 nmbd -D
1220 ? S 0:00 /usr/sbin/winbindd -F
1280 ? S< 0:00 [kworker/1:1H]
1352 ? Ss 0:00 /usr/sbin/cupsd -f
1355 ? S 0:00 /usr/lib/cups/notifier/dbus dbus://
1371 ? Ss 0:00 /usr/sbin/cups-browsed
1495 ? Ssl 0:00 /sbin/zfs-fuse --pidfile /var/run/zfs-fuse.pid
1655 tty4 Ss+ 0:00 /sbin/getty -8 38400 tty4
1659 tty5 Ss+ 0:00 /sbin/getty -8 38400 tty5
1671 tty2 Ss+ 0:00 /sbin/getty -8 38400 tty2
1672 tty3 Ss+ 0:00 /sbin/getty -8 38400 tty3
1675 tty6 Ss+ 0:00 /sbin/getty -8 38400 tty6
1713 ? Ss 0:00 atd
1720 ? Ss 0:00 /usr/sbin/sshd -D
1729 ? Ss 0:00 cron
1736 ? Ss 0:00 /usr/sbin/irqbalance
1752 ? Ss 0:00 /usr/sbin/kerneloops
1757 ? Ssl 0:00 whoopsie
1799 ? Sl 1:55 /usr/sbin/libvirtd -d
1812 ? S 0:00 [kauditd]
1828 ? S 0:06 Xtightvnc :1 -desktop X -auth /home/clayj/.Xauthority
1832 ? Ss 0:00 acpid -c /etc/acpi/events -s /var/run/acpid.socket
1874 ? SLsl 0:00 lightdm
1909 tty7 Ss+ 0:42 /usr/bin/X -core :0 -seat seat0 -auth /var/run/lightd
1912 ? Sl 0:00 /usr/lib/accountsservice/accounts-daemon
1917 ? Sl 0:00 /usr/lib/policykit-1/polkitd --no-debug
1997 ? S 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmas
2047 ? Sl 0:00 lightdm --session-child 12 19
2080 ? Sl 0:00 /usr/lib/upower/upowerd
2127 ? SNl 0:00 /usr/lib/rtkit/rtkit-daemon
2207 ? Sl 0:00 /usr/lib/colord/colord
2426 ? S 0:00 /bin/sh /etc/xdg/xfce4/xinitrc -- /etc/X11/xinit/xser
2478 tty1 Ss+ 0:00 /sbin/getty -8 38400 tty1
2485 ? Sl 0:00 xfce4-session
2488 ? S 0:00 /usr/bin/dbus-launch --sh-syntax --exit-with-session
2489 ? Ss 0:00 //bin/dbus-daemon --fork --print-pid 5 --print-addres
2492 ? S 0:00 /usr/lib/x86_64-linux-gnu/xfce4/xfconf/xfconfd
2496 ? Ss 0:00 /usr/bin/ssh-agent -s
2497 ? S 0:00 xfwm4 --display :1.0 --sm-client-id 2ddf16273-8e68-45
2499 ? S 0:00 Thunar --sm-client-id 228ae608a-5313-4a9f-b01f-fe6641
2500 ? Sl 0:00 xfce4-panel --display :1.0 --sm-client-id 2c3329af8-c
2502 ? Sl 0:00 xfdesktop --display :1.0 --sm-client-id 26d147f7b-050
2503 ? Ssl 0:00 xfsettingsd --display :1.0 --sm-client-id 26e3e62d0-a
2507 ? Sl 0:00 /usr/lib/gvfs/gvfsd
2511 ? Sl 0:00 /usr/lib/gvfs/gvfsd-fuse /run/user/1000/gvfs -f -o bi
2522 ? Ssl 0:00 xfce4-power-manager --restart --sm-client-id 2cb8dec7
2524 ? Sl 0:00 update-notifier
2526 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/indicator-sound/indicator-s
2528 ? Sl 0:00 zeitgeist-datahub
2531 ? Sl 0:00 /usr/lib/at-spi2-core/at-spi-bus-launcher
2536 ? S 0:00 xscreensaver -no-splash
2541 ? S 0:00 /bin/dbus-daemon --config-file=/etc/at-spi2/accessibi
2544 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/indicator-bluetooth/indicat
2546 ? Sl 0:00 /usr/bin/python /usr/share/system-config-printer/appl
2549 ? Sl 0:00 /usr/lib/at-spi2-core/at-spi2-registryd --use-gnome-s
2553 ? S<l 0:00 /usr/bin/pulseaudio --start --log-target=syslog
2560 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/indicator-power/indicator-p
2565 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/deja-dup/deja-dup-monitor
2571 ? Sl 0:00 /usr/bin/zeitgeist-daemon
2574 ? Ssl 0:00 xfce4-volumed
2580 ? S< 0:00 [kworker/11:1H]
2581 ? Ss 0:00 xfce4-power-manager
2585 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/indicator-application/indic
2588 ? S 0:00 /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-1.0 /us
2589 ? Sl 0:26 psensor
2593 ? S 0:00 /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-1.0 /us
2599 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/zeitgeist-fts
2604 ? Sl 0:00 /usr/lib/gvfs/gvfs-udisks2-volume-monitor
2622 ? Sl 0:00 /usr/lib/policykit-1-gnome/polkit-gnome-authenticatio
2625 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/notify-osd
2632 ? Sl 0:00 /usr/lib/udisks2/udisksd --no-debug
2657 ? S 0:00 /bin/cat
2660 ? S 0:00 /usr/lib/x86_64-linux-gnu/gconf/gconfd-2
2661 ? S< 0:00 [kworker/3:1H]
2663 ? S< 0:00 [kworker/7:1H]
2670 ? Sl 0:00 /usr/lib/gvfs/gvfs-afc-volume-monitor
2676 ? Sl 0:00 /usr/lib/gvfs/gvfs-mtp-volume-monitor
2680 ? Sl 0:00 /usr/lib/gvfs/gvfs-gphoto2-volume-monitor
2691 ? Sl 0:04 /usr/lib/gvfs/gvfsd-trash --spawner :1.8 /org/gtk/gvf
2731 ? S 0:00 /usr/sbin/winbindd -F
2744 ? Sl 0:00 /usr/bin/gnome-keyring-daemon --daemonize --login
2746 ? Ss 0:00 init --user
2836 ? Ss 0:00 dbus-daemon --fork --session --address=unix:abstract=
2847 ? Ss 0:00 upstart-event-bridge
2857 ? Ss 0:00 /usr/lib/x86_64-linux-gnu/hud/window-stack-bridge
2891 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/bamf/bamfdaemon
2893 ? S 0:00 upstart-file-bridge --daemon --user
2895 ? S 0:00 upstart-dbus-bridge --daemon --system --user --bus-na
2897 ? S 0:00 upstart-dbus-bridge --daemon --session --user --bus-n
2902 ? Sl 0:00 /usr/lib/gvfs/gvfsd
2912 ? Ssl 0:05 /usr/bin/ibus-daemon --daemonize --xim
2928 ? Ssl 0:00 /usr/lib/unity-settings-daemon/unity-settings-daemon
2932 ? Sl 0:00 /usr/lib/ibus/ibus-dconf
2934 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/hud/hud-service
2935 ? Sl 0:00 /usr/lib/ibus/ibus-ui-gtk3
2940 ? Sl 0:00 /usr/lib/ibus/ibus-x11 --kill-daemon
2941 ? Ssl 0:00 /usr/lib/at-spi2-core/at-spi-bus-launcher --launch-im
2942 ? Ssl 0:00 gnome-session --session=ubuntu
2956 ? S 0:00 /bin/dbus-daemon --config-file=/etc/at-spi2/accessibi
2966 ? Ssl 0:01 /usr/lib/unity/unity-panel-service
2971 ? Sl 0:00 /usr/lib/at-spi2-core/at-spi2-registryd --use-gnome-s
2993 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/indicator-keyboard-service
2995 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-messages/indicato
2998 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-bluetooth/indicat
3001 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-power/indicator-p
3002 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-datetime/indicato
3005 ? Sl 0:01 /usr/lib/ibus/ibus-engine-simple
3008 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-sound/indicator-s
3017 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-printers/indicato
3019 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-session/indicator
3023 ? Ssl 0:00 /usr/lib/x86_64-linux-gnu/indicator-application/indic
3041 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/notify-osd
3055 ? Sl 0:00 /usr/lib/evolution/evolution-source-registry
3076 ? Sl 0:00 /usr/lib/evolution/evolution-calendar-factory
3095 ? Sl 0:00 /usr/lib/dconf/dconf-service
3100 ? S< 0:00 [kworker/8:1H]
3117 ? Sl 0:48 compiz
3123 ? Sl 0:00 /usr/lib/policykit-1-gnome/polkit-gnome-authenticatio
3124 ? Sl 0:00 nautilus -n
3127 ? Sl 0:00 /usr/lib/unity-settings-daemon/unity-fallback-mount-h
3146 ? Sl 0:00 /usr/lib/gvfs/gvfs-udisks2-volume-monitor
3152 ? Sl 0:00 /usr/lib/gvfs/gvfs-afc-volume-monitor
3157 ? Sl 0:00 /usr/lib/gvfs/gvfs-mtp-volume-monitor
3161 ? Sl 0:00 /usr/lib/gvfs/gvfs-gphoto2-volume-monitor
3167 ? Sl 0:04 /usr/lib/gvfs/gvfsd-trash --spawner :1.6 /org/gtk/gvf
3173 ? S< 0:00 [kworker/5:1H]
3176 ? Sl 0:00 /usr/lib/gvfs/gvfsd-burn --spawner :1.6 /org/gtk/gvfs
3187 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/unity-scope-home/unity-scop
3198 ? Sl 0:00 /usr/bin/unity-scope-loader applications/applications
3200 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/unity-lens-files/unity-file
3211 ? Sl 0:00 /usr/bin/zeitgeist-daemon
3219 ? Sl 0:00 zeitgeist-datahub
3269 ? Sl 0:07 gnome-terminal
3275 ? S 0:00 /usr/lib/x86_64-linux-gnu/gconf/gconfd-2
3278 ? S 0:00 gnome-pty-helper
3279 pts/5 Ss 0:00 bash
3295 ? Sl 0:00 telepathy-indicator
3301 ? Sl 0:00 /usr/lib/telepathy/mission-control-5
3331 ? S< 0:00 [kworker/6:1H]
3332 ? Sl 0:58 psensor
3377 ? Sl 0:00 update-notifier
3384 ? S 0:00 xterm
3386 pts/0 Ss+ 0:00 bash
3410 pts/5 S 0:09 xosview +net
3413 ? Ssl 0:43 python /usr/share/virt-manager/virt-manager.py
3452 ? Sl 2:06 qemu-system-x86_64 -enable-kvm -name IntelDev -S -mac
3453 ? S 0:00 [vhost-3452]
3456 ? S 0:00 [kvm-pit/3452]
3458 ? S< 0:00 [kworker/10:1H]
3495 ? Sl 0:00 /usr/lib/x86_64-linux-gnu/deja-dup/deja-dup-monitor
4075 ? S 0:00 [kworker/5:2]
4076 ? S 0:01 [kworker/0:0]
5998 ? Sl 0:00 /usr/bin/gnome-keyring-daemon --start --foreground --
8860 pts/5 S+ 0:02 top
9229 ? S 0:00 [kworker/3:0]
9669 ? Ssl 0:00 /usr/lib/unity/unity-panel-service --lockscreen-mode
9769 ? Ss 0:00 sshd: clayj [priv]
9858 ? S 0:00 sshd: clayj@pts/16
9859 pts/16 Ss 0:00 -bash
10276 pts/16 R+ 0:00 ps ax
clayj@VMHOST1:~$
答案1
不需要有大量的 CPU 使用率，只需要有大量的进程尝试运行。“每个使用或等待 CPU 资源的运行进程都会将平均负载加 1。”
或许有几十个进程正在运行，但使用的处理能力却很少。