laptop - Why my CPU heavily loaded?
2014-07
user3734559
Idle CPU load ranges 30-80%, when performing any tasks - 100%. problem in linux and windows. The computer is not dusty, model acer ao722, fan is working. Sensor shows initial termperature - 57 C, idle temperature - 67 C. Also happens when I use Linux from USB stick (live image).
system monitor screenshot
output of "top -b -n1":
top - 23:40:11 up 2 min, 2 users, load average: 2,61, 1,42, 0,55
Tasks: 168 total, 3 running, 165 sleeping, 0 stopped, 0 zombie
%Cpu(s): 44,4 us, 12,6 sy, 6,0 ni, 30,1 id, 5,2 wa, 1,7 hi, 0,0 si, 0,0 st
KiB Mem: 1770520 total, 702748 used, 1067772 free, 45836 buffers
KiB Swap: 2097148 total, 0 used, 2097148 free. 271824 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
862 root 20 0 30608 2452 1876 R 59,0 0,1 0:00.42 wpa_suppli+
2174 root 20 0 33224 1492 1084 R 5,9 0,1 0:00.03 top
1 root 20 0 33768 3128 1468 S 0,0 0,2 0:05.05 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
4 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kworker/0:0
5 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/0:+
6 root 20 0 0 0 0 S 0,0 0,0 0:00.03 kworker/u8+
7 root 20 0 0 0 0 R 0,0 0,0 0:01.49 rcu_sched
8 root 20 0 0 0 0 S 0,0 0,0 0:00.28 rcuos/0
9 root 20 0 0 0 0 S 0,0 0,0 0:00.31 rcuos/1
10 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcuos/2
11 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcuos/3
12 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcu_bh
13 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcuob/0
14 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcuob/1
15 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcuob/2
16 root 20 0 0 0 0 S 0,0 0,0 0:00.00 rcuob/3
17 root rt 0 0 0 0 S 0,0 0,0 0:00.04 migration/0
18 root rt 0 0 0 0 S 0,0 0,0 0:00.01 watchdog/0
19 root rt 0 0 0 0 S 0,0 0,0 0:00.00 watchdog/1
20 root rt 0 0 0 0 S 0,0 0,0 0:00.01 migration/1
21 root 20 0 0 0 0 S 0,0 0,0 0:00.05 ksoftirqd/1
22 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kworker/1:0
23 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/1:+
24 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 khelper
25 root 20 0 0 0 0 S 0,0 0,0 0:00.01 kdevtmpfs
26 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 netns
27 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 writeback
28 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kintegrityd
29 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 bioset
30 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/u9+
31 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kblockd
32 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 ata_sff
33 root 20 0 0 0 0 S 0,0 0,0 0:00.08 khubd
34 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 md
35 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 devfreq_wq
36 root 20 0 0 0 0 S 0,0 0,0 0:00.16 kworker/1:1
37 root 20 0 0 0 0 S 0,0 0,0 0:00.53 kworker/0:1
38 root 20 0 0 0 0 S 0,0 0,0 0:00.00 khungtaskd
39 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kswapd0
40 root 25 5 0 0 0 S 0,0 0,0 0:00.00 ksmd
41 root 39 19 0 0 0 S 0,0 0,0 0:00.01 khugepaged
42 root 20 0 0 0 0 S 0,0 0,0 0:00.00 fsnotify_m+
43 root 20 0 0 0 0 S 0,0 0,0 0:00.00 ecryptfs-k+
44 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 crypto
56 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kthrotld
57 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kworker/u8+
58 root 20 0 0 0 0 S 0,0 0,0 0:00.02 kworker/u8+
77 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 deferwq
78 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 charger_ma+
125 root 20 0 0 0 0 S 0,0 0,0 0:00.00 scsi_eh_0
126 root 20 0 0 0 0 S 0,0 0,0 0:00.00 scsi_eh_1
127 root 20 0 0 0 0 S 0,0 0,0 0:00.10 usb-storage
128 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kworker/u8+
138 root 20 0 0 0 0 S 0,0 0,0 0:00.03 jbd2/sda5-8
139 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 ext4-rsv-c+
263 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/u9+
265 root 20 0 19604 912 616 S 0,0 0,1 0:00.73 upstart-ud+
271 root 20 0 51808 2012 1028 S 0,0 0,1 0:00.35 systemd-ud+
426 message+ 20 0 40280 2504 1008 S 0,0 0,1 0:01.06 dbus-daemon
465 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 cfg80211
466 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kpsmoused
469 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kworker/0:2
506 syslog 20 0 255840 1264 840 S 0,0 0,1 0:00.09 rsyslogd
512 root 20 0 19416 2020 1620 S 0,0 0,1 0:00.02 bluetoothd
516 root 20 0 43448 1876 1504 S 0,0 0,1 0:00.03 systemd-lo+
546 root 10 -10 0 0 0 S 0,0 0,0 0:00.00 krfcommd
565 root 20 0 76852 3728 2644 S 0,0 0,2 0:00.05 cupsd
568 avahi 20 0 32348 1656 1352 S 0,0 0,1 0:00.04 avahi-daem+
572 avahi 20 0 32224 464 212 S 0,0 0,0 0:00.00 avahi-daem+
574 root 20 0 0 0 0 S 0,0 0,0 0:00.00 wl_event_h+
587 root 20 0 15540 752 324 S 0,0 0,0 0:00.26 upstart-fi+
595 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kvm-irqfd-+
596 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 hci0
598 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 hci0
599 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 ttm_swap
611 root 20 0 75352 3408 2512 S 0,0 0,2 0:00.03 cups-brows+
714 root 20 0 330232 4424 3252 S 0,0 0,2 0:00.08 ModemManag+
749 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 kworker/u9+
760 root 20 0 360840 8908 5256 S 0,0 0,5 0:00.34 NetworkMan+
798 root 20 0 295832 5836 3724 S 0,0 0,3 0:00.44 polkitd
813 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 hd-audio0
822 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 hd-audio1
870 root 20 0 15656 1032 420 S 0,0 0,1 0:00.12 upstart-so+
977 root 20 0 24228 948 796 S 0,0 0,1 0:00.00 getty
981 root 20 0 24228 956 796 S 0,0 0,1 0:00.00 getty
986 root 20 0 24228 952 796 S 0,0 0,1 0:00.00 getty
988 root 20 0 24228 956 796 S 0,0 0,1 0:00.00 getty
991 root 20 0 24228 948 796 S 0,0 0,1 0:00.00 getty
1040 root 20 0 23656 1040 796 S 0,0 0,1 0:00.00 cron
1045 root 20 0 19188 720 500 S 0,0 0,0 0:00.33 irqbalance
1046 root 20 0 4368 720 540 S 0,0 0,0 0:00.01 acpid
1047 kernoops 20 0 37144 1012 692 S 0,0 0,1 0:00.00 kerneloops
1061 whoopsie 20 0 276740 4256 3028 S 0,0 0,2 0:00.02 whoopsie
1072 root 20 0 292608 6404 3544 S 0,0 0,4 0:00.09 lightdm
1090 root 0 -20 0 0 0 S 0,0 0,0 0:00.00 iprt
1093 root 20 0 302240 5120 4016 S 0,0 0,3 0:00.29 accounts-d+
1178 root 20 0 24228 948 796 S 0,0 0,1 0:00.00 getty
1189 root 20 0 242920 31484 16088 S 0,0 1,8 0:31.94 Xorg
1195 root 20 0 168288 3696 2932 S 0,0 0,2 0:00.04 lightdm
1198 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kauditd
1213 user 20 0 44140 2332 1612 S 0,0 0,1 0:00.24 init
1336 user 20 0 40800 2204 816 S 0,0 0,1 0:00.74 dbus-daemon
1338 user 20 0 10616 312 0 S 0,0 0,0 0:00.00 ssh-agent
1345 user 20 0 26512 1184 1004 S 0,0 0,1 0:00.03 upstart-ev+
1368 user 20 0 34996 704 400 S 0,0 0,0 0:00.00 upstart-fi+
1371 user 20 0 26520 644 408 S 0,0 0,0 0:00.04 upstart-db+
1372 user 20 0 26520 648 408 S 0,0 0,0 0:00.06 upstart-db+
1413 user 20 0 367532 4388 3624 S 0,0 0,2 0:00.03 at-spi-bus+
1420 user 20 0 39228 1872 1448 S 0,0 0,1 0:00.05 dbus-daemon
1423 user 20 0 125020 3408 2804 S 0,0 0,2 0:00.05 at-spi2-re+
1427 user 20 0 200852 3132 2532 S 0,0 0,2 0:00.08 gvfsd
1437 user 20 0 360424 3920 3184 S 0,0 0,2 0:00.04 gvfsd-fuse
1465 user 20 0 4444 680 572 S 0,0 0,0 0:00.00 sh
1480 user 20 0 328572 9272 6344 S 0,0 0,5 0:00.30 xfce4-sess+
1483 user 20 0 39456 2584 2056 S 0,0 0,1 0:00.12 xfconfd
1487 user 20 0 326856 4648 3700 S 0,0 0,3 0:00.05 gnome-keyr+
1490 user 20 0 171628 12548 8768 S 0,0 0,7 0:00.94 xfwm4
1494 user 20 0 251844 7056 5488 S 0,0 0,4 0:00.11 Thunar
1496 user 20 0 567452 16496 11096 S 0,0 0,9 0:00.84 xfce4-panel
1497 user 20 0 690632 24500 15560 S 0,0 1,4 0:01.41 xfdesktop
1498 user 20 0 350304 9096 6436 S 0,0 0,5 0:01.89 xfsettingsd
1500 root 20 0 304944 4684 3632 S 0,0 0,3 0:00.33 upowerd
1521 user 20 0 479020 14380 10372 S 0,0 0,8 0:00.59 panel-1-wh+
1527 user 20 0 247120 7004 5184 S 0,0 0,4 0:00.20 xfce4-powe+
1529 user 20 0 226836 7168 5652 S 0,0 0,4 0:00.07 light-lock+
1533 user 20 0 762560 18532 12108 S 0,0 1,0 0:00.69 nm-applet
1535 user 20 0 470812 9752 5988 S 0,0 0,6 0:00.13 zeitgeist-+
1537 user 20 0 708304 16836 11920 S 0,0 1,0 0:00.71 update-not+
1539 user 20 0 286748 7056 3936 S 0,0 0,4 0:00.10 indicator-+
1544 user 20 0 257840 16376 7148 S 0,0 0,9 0:00.52 applet.py
1547 user 39 19 305728 12256 6016 S 0,0 0,7 0:00.24 tumblerd
1550 user 20 0 168528 3732 2476 S 0,0 0,2 0:00.01 xfce4-powe+
1553 user 20 0 629780 31108 14504 S 0,0 1,8 0:00.91 blueman-ap+
1559 user 20 0 226664 6680 5252 S 0,0 0,4 0:00.08 polkit-gno+
1569 user 20 0 299780 4452 3620 S 0,0 0,3 0:00.09 indicator-+
1581 user 20 0 158592 7356 5724 S 0,0 0,4 0:00.11 panel-4-sy+
1588 user 20 0 565960 17640 11832 S 0,0 1,0 0:00.73 panel-5-in+
1600 user 20 0 331276 3736 2956 S 0,0 0,2 0:00.13 zeitgeist-+
1607 user 20 0 748504 105624 55224 S 0,0 6,0 0:27.81 update-man+
1611 user 20 0 484308 15288 8884 S 0,0 0,9 0:03.23 xfce4-xkb-+
1619 user 20 0 168100 9492 7464 S 0,0 0,5 0:00.14 panel-15-a+
1648 user 20 0 233188 5580 4580 S 0,0 0,3 0:00.12 zeitgeist-+
1653 user 9 -11 445444 6020 3872 S 0,0 0,3 0:00.19 pulseaudio
1656 user 20 0 304808 6524 3588 S 0,0 0,4 0:04.03 xfce4-volu+
1658 rtkit 21 1 168916 1308 1084 S 0,0 0,1 0:00.02 rtkit-daem+
1659 user 20 0 359732 13656 9828 S 0,0 0,8 0:00.55 xfce4-noti+
1701 user 20 0 15624 612 520 S 0,0 0,0 0:00.00 cat
1737 root 20 0 0 0 0 S 0,0 0,0 0:00.00 kworker/1:2
1793 user 20 0 315788 5956 4088 S 0,0 0,3 0:00.16 gvfs-udisk+
1796 root 20 0 386292 8276 4200 S 0,0 0,5 0:00.43 udisksd
1808 user 20 0 216652 3404 2648 S 0,0 0,2 0:00.06 gvfs-gphot+
1814 user 20 0 290172 3384 2720 S 0,0 0,2 0:00.05 gvfs-afc-v+
1819 user 20 0 204488 2844 2276 S 0,0 0,2 0:00.05 gvfs-mtp-v+
1829 user 20 0 35444 1864 1428 S 0,0 0,1 0:00.06 init
1832 user 20 0 369316 6084 3328 S 0,0 0,3 0:00.03 indicator-+
1837 user 20 0 573472 6828 5076 S 0,0 0,4 0:00.16 indicator-+
1839 user 20 0 378404 6472 3604 S 0,0 0,4 0:00.06 gvfsd-trash
1889 user 20 0 61320 2508 2036 S 0,0 0,1 0:00.02 gconfd-2
1974 user 20 0 62328 2600 2144 S 0,0 0,1 0:00.03 obex-data-+
1978 user 20 0 178176 2620 2152 S 0,0 0,1 0:00.06 dconf-serv+
2027 root 25 5 294428 86368 45300 S 0,0 4,9 0:07.04 aptd
2047 user 20 0 621772 15740 11172 S 0,0 0,9 0:00.74 xfce4-term+
2051 user 20 0 14824 800 648 S 0,0 0,0 0:00.00 gnome-pty-+
2052 user 20 0 31020 3700 1692 S 0,0 0,2 0:00.13 bash
2134 root 20 0 75688 2396 1768 S 0,0 0,1 0:00.05 sudo
2145 root 20 0 31052 3756 1696 S 0,0 0,2 0:00.13 bash
output of "/proc/cpuinfo":
processor : 0
vendor_id : AuthenticAMD
cpu family : 20
model : 2
model name : AMD C-60 APU with Radeon(tm) HD Graphics
stepping : 0
microcode : 0x5000101
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor ssse3 cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch ibs skinit wdt arat cpb hw_pstate npt lbrv svm_lock nrip_save pausefilter
bogomips : 1994.99
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate cpb
processor : 1
vendor_id : AuthenticAMD
cpu family : 20
model : 2
model name : AMD C-60 APU with Radeon(tm) HD Graphics
stepping : 0
microcode : 0x5000101
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor ssse3 cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch ibs skinit wdt arat cpb hw_pstate npt lbrv svm_lock nrip_save pausefilter
bogomips : 1994.99
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate cpb
Answers
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Related Question
ubuntu - Second CPU missing of Dual Core
Zardoz
My Lenovo T61 has a dual core CPU. I just noticed that under Ubuntu 10.10 only one CPU is recognized. I know that once both CPUs worked. Not sure since when the second CPU is missing. Maybe since the last kernel update. Currently I am using linux-image-2.6.35-23-generic (for x86_64).
What can I do to enable the second CPU again?
Here the ouput of /proc/cpuinfo
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz stepping : 6 cpu MHz : 800.000 cache size : 3072 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm ida dts tpr_shadow vnmi flexpriority bogomips : 4189.99 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management:
Any help is welcome. I really need that CPU power for my work here.
Related Answers
Zardoz
The current Nvidia driver (the one from Nvidia itself "NVIDIA-Linux-x86_64-260.19.21") leads to those problems. After uninstalling it and installing the one of Ubuntu again the second CPU shows up again. Not sure why that driver has this problem, but I will test things a bit further when I have the time.
Malcolm
I noticed that I had this problem right after I performed
sudo pm-powersave true
I inverted it, restarted, and my laptop now recognizes my 2 cpus. (For completeness...)
sudo pm-powersave false
I performed this on:
MacbookPro 5,2
Ubuntu 12.04 LTS
Intel Core 2 Duo
Paul
I also experienced the problem of the missing cpu with a Core 2 Duo Asus N90S notebook and Ubuntu 10.10. Also, the system would only boot the LiveCD and finished installation with "nolapic" in the kernel params. Under 9.10 the system behaved normally.
Under 10.10, removing the NVidia driver did not fix the missing cpu for me and isn't the only problem.
After reading some other cases of this I had a feeling a kernel compile was in order.
I grabbed the official ubuntu linux kernel source module and compiled a new kernel, with the correct CPU type selected, Power Management disabled and CPU_HOTPLUG disabled. Installing that kernel brought back the second cpu, and ability to correctly boot up without the special "nolapic" setting.
I'm posting this in the hopes it will be useful to other people having problems.