FS#50032 - [linux] System slow, htop shows 0% CPU for All processes, CPU frequency fixed at 3399.968 MHz

Attached to Project: Arch Linux
Opened by Clemens (uiop) - Wednesday, 13 July 2016, 14:00 GMT
Last edited by Doug Newgard (Scimmia) - Friday, 20 October 2017, 15:03 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 3
Private No

Details

System feels slow. Checking on htop shows 0% for all processes, though the graphic shows reasonable cpu usage.

Please help, this is really a show stopper!

Additional info:
uname -a:
Linux blablub 4.6.3-1-ARCH #1 SMP PREEMPT Fri Jun 24 21:19:13 CEST 2016 x86_64 GNU/Linux

cat /proc/cpuinfo |grep cpu\ MHz:
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968
cpu MHz : 3399.968

ps -A:
PID TTY TIME CMD
1 ? 00:00:00 systemd
2 ? 00:00:00 kthreadd
3 ? 00:00:00 ksoftirqd/0
5 ? 00:00:00 kworker/0:0H
6 ? 00:00:00 kworker/u24:0
7 ? 00:00:00 rcu_preempt
8 ? 00:00:00 rcu_sched
9 ? 00:00:00 rcu_bh
10 ? 00:00:00 migration/0
11 ? 00:00:00 watchdog/0
12 ? 00:00:00 cpuhp/0
13 ? 00:00:00 cpuhp/1
14 ? 00:00:00 watchdog/1
15 ? 00:00:00 migration/1
16 ? 00:00:00 ksoftirqd/1
17 ? 00:00:00 kworker/1:0
18 ? 00:00:00 kworker/1:0H
20 ? 00:00:00 cpuhp/2
21 ? 00:00:00 watchdog/2
22 ? 00:00:00 migration/2
23 ? 00:00:00 ksoftirqd/2
25 ? 00:00:00 kworker/2:0H
26 ? 00:00:00 cpuhp/3
27 ? 00:00:00 watchdog/3
28 ? 00:00:00 migration/3
29 ? 00:00:00 ksoftirqd/3
31 ? 00:00:00 kworker/3:0H
32 ? 00:00:00 cpuhp/4
33 ? 00:00:00 watchdog/4
34 ? 00:00:00 migration/4
35 ? 00:00:00 ksoftirqd/4
36 ? 00:00:00 kworker/4:0
37 ? 00:00:00 kworker/4:0H
38 ? 00:00:00 cpuhp/5
39 ? 00:00:00 watchdog/5
40 ? 00:00:00 migration/5
41 ? 00:00:00 ksoftirqd/5
43 ? 00:00:00 kworker/5:0H
44 ? 00:00:00 cpuhp/6
45 ? 00:00:00 watchdog/6
46 ? 00:00:00 migration/6
47 ? 00:00:00 ksoftirqd/6
49 ? 00:00:00 kworker/6:0H
50 ? 00:00:00 cpuhp/7
51 ? 00:00:00 watchdog/7
52 ? 00:00:00 migration/7
53 ? 00:00:00 ksoftirqd/7
55 ? 00:00:00 kworker/7:0H
56 ? 00:00:00 cpuhp/8
57 ? 00:00:00 watchdog/8
58 ? 00:00:00 migration/8
59 ? 00:00:00 ksoftirqd/8
60 ? 00:00:00 kworker/8:0
61 ? 00:00:00 kworker/8:0H
62 ? 00:00:00 cpuhp/9
63 ? 00:00:00 watchdog/9
64 ? 00:00:00 migration/9
65 ? 00:00:00 ksoftirqd/9
67 ? 00:00:00 kworker/9:0H
68 ? 00:00:00 cpuhp/10
69 ? 00:00:00 watchdog/10
70 ? 00:00:00 migration/10
71 ? 00:00:00 ksoftirqd/10
73 ? 00:00:00 kworker/10:0H
74 ? 00:00:00 cpuhp/11
75 ? 00:00:00 watchdog/11
76 ? 00:00:00 migration/11
77 ? 00:00:00 ksoftirqd/11
79 ? 00:00:00 kworker/11:0H
80 ? 00:00:00 kdevtmpfs
81 ? 00:00:00 netns
82 ? 00:00:00 khungtaskd
83 ? 00:00:00 oom_reaper
84 ? 00:00:00 writeback
85 ? 00:00:00 kcompactd0
86 ? 00:00:00 ksmd
87 ? 00:00:00 khugepaged
88 ? 00:00:00 crypto
89 ? 00:00:00 kintegrityd
90 ? 00:00:00 bioset
91 ? 00:00:00 kblockd
92 ? 00:00:00 devfreq_wq
93 ? 00:00:00 watchdogd
94 ? 00:00:00 kswapd0
95 ? 00:00:00 vmstat
104 ? 00:00:00 kthrotld
109 ? 00:00:00 ipv6_addrconf
111 ? 00:00:00 deferwq
133 ? 00:00:00 kworker/5:1
138 ? 00:00:00 kworker/9:1
151 ? 00:00:00 firewire
152 ? 00:00:00 firewire_ohci
153 ? 00:00:00 ata_sff
184 ? 00:00:00 kworker/6:1
187 ? 00:00:00 kworker/10:1
189 ? 00:00:00 kworker/11:1
190 ? 00:00:00 kworker/2:1
192 ? 00:00:00 scsi_eh_0
193 ? 00:00:00 scsi_tmf_0
194 ? 00:00:00 scsi_eh_1
195 ? 00:00:00 scsi_tmf_1
196 ? 00:00:00 scsi_eh_2
197 ? 00:00:00 scsi_tmf_2
198 ? 00:00:00 scsi_eh_3
199 ? 00:00:00 scsi_tmf_3
200 ? 00:00:00 scsi_eh_4
201 ? 00:00:00 scsi_tmf_4
202 ? 00:00:00 scsi_eh_5
203 ? 00:00:00 scsi_tmf_5
205 ? 00:00:00 kworker/u24:3
208 ? 00:00:00 kworker/u24:6
209 ? 00:00:00 kworker/u24:7
210 ? 00:00:00 scsi_eh_6
211 ? 00:00:00 scsi_tmf_6
212 ? 00:00:00 scsi_eh_7
213 ? 00:00:00 scsi_tmf_7
214 ? 00:00:00 kworker/u24:8
216 ? 00:00:00 scsi_eh_8
217 ? 00:00:00 scsi_tmf_8
218 ? 00:00:00 scsi_eh_9
219 ? 00:00:00 scsi_tmf_9
220 ? 00:00:00 kworker/u24:10
221 ? 00:00:00 kworker/u24:11
222 ? 00:00:00 scsi_eh_10
223 ? 00:00:00 scsi_tmf_10
224 ? 00:00:00 scsi_eh_11
225 ? 00:00:00 scsi_tmf_11
230 ? 00:00:00 kworker/7:1
231 ? 00:00:00 kworker/1:2
232 ? 00:00:00 bioset
233 ? 00:00:00 scsi_eh_12
234 ? 00:00:00 scsi_tmf_12
235 ? 00:00:00 usb-storage
236 ? 00:00:00 kworker/1:3
237 ? 00:00:00 bioset
238 ? 00:00:00 bioset
239 ? 00:00:00 bioset
241 ? 00:00:00 scsi_eh_13
242 ? 00:00:00 scsi_tmf_13
243 ? 00:00:00 usb-storage
245 ? 00:00:00 bioset
247 ? 00:00:00 kworker/0:1H
249 ? 00:00:00 scsi_eh_14
250 ? 00:00:00 scsi_tmf_14
251 ? 00:00:00 usb-storage
254 ? 00:00:00 bioset
267 ? 00:00:00 bioset
278 ? 00:00:00 bioset
279 ? 00:00:00 bioset
280 ? 00:00:00 bioset
281 ? 00:00:00 bioset
288 ? 00:00:00 kworker/8:1H
289 ? 00:00:00 kworker/11:1H
290 ? 00:00:00 kworker/6:1H
294 ? 00:00:00 kworker/5:1H
295 ? 00:00:00 kworker/3:1H
296 ? 00:00:00 kworker/1:1H
297 ? 00:00:00 kworker/4:1H
298 ? 00:00:00 kworker/2:1H
308 ? 00:00:00 kdmflush
310 ? 00:00:00 bioset
311 ? 00:00:00 kcryptd_io
312 ? 00:00:00 kcryptd
314 ? 00:00:00 dmcrypt_write
315 ? 00:00:00 bioset
326 ? 00:00:00 kdmflush
328 ? 00:00:00 bioset
331 ? 00:00:00 kdmflush
332 ? 00:00:00 bioset
335 ? 00:00:00 kdmflush
337 ? 00:00:00 bioset
361 ? 00:00:00 jbd2/dm-2-8
362 ? 00:00:00 ext4-rsv-conver
392 ? 00:00:00 kworker/7:2
394 ? 00:00:00 kworker/3:2
395 ? 00:00:00 iprt-VBoxWQueue
396 ? 00:00:00 systemd-journal
401 ? 00:00:00 iprt-VBoxTscThr
418 ? 00:00:00 kworker/9:2
426 ? 00:00:00 kworker/2:2
427 ? 00:00:00 systemd-udevd
440 ? 00:00:00 kworker/4:4
466 ? 00:00:00 kworker/9:1H
467 ? 00:00:00 kworker/10:1H
607 ? 00:00:00 edac-poller
610 ? 00:00:00 irq/51-mei_me
626 ? 00:00:00 kpsmoused
637 ? 00:00:00 kworker/7:1H
638 ? 00:00:00 kvm-irqfd-clean
690 ? 00:00:00 ext4-rsv-conver
693 ? 00:00:00 lvmetad
713 ? 00:00:00 systemd-timesyn
717 ? 00:00:00 cupsd
733 ? 00:00:00 avahi-daemon
734 ? 00:00:00 avahi-daemon
735 ? 00:00:00 systemd-logind
738 ? 00:00:00 dbus-daemon
739 ? 00:00:00 cups-browsed
740 ? 00:00:00 colord
749 ? 00:00:00 NetworkManager
759 ? 00:00:00 tor
760 ? 00:00:00 tvheadend
762 ? 00:00:00 sshd
773 ? 00:00:00 smbd
774 ? 00:00:00 smbd-notifyd
775 ? 00:00:00 cleanupd
778 ? 00:00:00 lpqd
780 ? 00:00:00 lightdm
786 tty7 00:00:00 Xorg
789 ? 00:00:00 accounts-daemon
791 ? 00:00:00 polkitd
858 ? 00:00:00 lightdm
862 ? 00:00:00 kdvb-ad-0-fe-0
921 ? 00:00:00 systemd
923 ? 00:00:00 (sd-pam)
932 ? 00:00:00 kworker/10:2
938 ? 00:00:00 gnome-keyring-d
941 ? 00:00:00 cinnamon-sessio
949 ? 00:00:00 dbus-daemon
960 ? 00:00:00 gvfsd
965 ? 00:00:00 gvfsd-fuse
973 ? 00:00:00 at-spi-bus-laun
978 ? 00:00:00 dbus-daemon
980 ? 00:00:00 at-spi2-registr
998 ? 00:00:00 cinnamon-settin
1003 ? 00:00:00 pulseaudio
1008 ? 00:00:00 rtkit-daemon
1015 ? 00:00:00 upowerd
1058 ? 00:00:00 dconf-service
1061 ? 00:00:00 gvfs-udisks2-vo
1064 ? 00:00:00 udisksd
1072 ? 00:00:00 csd-printer
1081 ? 00:00:00 mount.ntfs
1091 ? 00:00:00 cinnamon-launch
1094 ? 00:00:00 cinnamon
1100 ? 00:00:00 klipper
1102 ? 00:00:00 zeitgeist-datah
1103 ? 00:00:00 nemo
1104 ? 00:00:00 nm-applet
1105 ? 00:00:00 cinnamon-killer
1106 ? 00:00:00 polkit-gnome-au
1114 ? 00:00:00 zeitgeist-daemo
1115 ? 00:00:00 octopi-notifier
1123 ? 00:00:00 zeitgeist-fts
1174 ? 00:00:00 gvfsd-trash
1187 ? 00:00:00 gvfsd-metadata
1198 ? 00:00:00 kglobalaccel5
1255 ? 00:00:00 xterm
1258 pts/0 00:00:00 bash
1297 ? 00:00:00 cinnamon-screen
1301 ? 00:00:00 firefox
1384 ? 00:00:00 gconfd-2
1455 ? 00:00:00 syncthing
1479 pts/0 00:00:00 sudo
1480 pts/0 00:00:00 su
1481 pts/0 00:00:00 bash
1503 ? 00:00:00 gvim
1985 ? 00:00:00 gvfsd-computer
2327 ? 00:00:00 kdmflush
2329 ? 00:00:00 bioset
2330 ? 00:00:00 kcryptd_io
2331 ? 00:00:00 kcryptd
2333 ? 00:00:00 dmcrypt_write
2334 ? 00:00:00 bioset
2341 ? 00:00:00 jbd2/dm-4-8
2342 ? 00:00:00 ext4-rsv-conver
2391 ? 00:00:00 clementine
2397 ? 00:00:00 clementine-tagr
2398 ? 00:00:00 clementine-tagr
2399 ? 00:00:00 clementine-tagr
2400 ? 00:00:00 clementine-tagr
2401 ? 00:00:00 clementine-tagr
2402 ? 00:00:00 clementine-tagr
2403 ? 00:00:00 clementine-tagr
2404 ? 00:00:00 clementine-tagr
2405 ? 00:00:00 clementine-tagr
2406 ? 00:00:00 clementine-tagr
2407 ? 00:00:00 clementine-tagr
2408 ? 00:00:00 clementine-tagr
2420 ? 00:00:00 kworker/6:0
2431 ? 00:00:00 kworker/u24:2
2442 ? 00:00:00 kworker/8:1
2444 ? 00:00:00 kworker/11:0
2451 ? 00:00:00 xterm
2455 pts/1 00:00:00 bash
2461 ? 00:00:00 kworker/1:4
2474 ? 00:00:00 cifsiod
2481 ? 00:00:00 cifsd
2511 ? 00:00:00 thunderbird
2620 ? 00:00:00 gpg-agent
2625 ? 00:00:00 gvfsd-http
2647 ? 00:00:00 kworker/0:1
2723 ? 00:00:00 kworker/1:1
2960 ? 00:00:00 kworker/3:1
3145 ? 00:00:00 kworker/5:2
3184 ? 00:00:00 kworker/u24:1
3218 ? 00:00:00 kworker/1:6
3219 ? 00:00:00 kworker/0:2
3226 ? 00:00:00 kworker/u24:4
3284 ? 00:00:00 kworker/0:0
3374 ? 00:00:00 kworker/1:5
3376 ? 00:00:00 kworker/3:0
3377 pts/1 00:00:00 ps

cat /proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6802.26
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 1
cpu cores : 6
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.36
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 2
cpu cores : 6
apicid : 4
initial apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.46
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 3
cpu cores : 6
apicid : 6
initial apicid : 6
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.42
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 4
cpu cores : 6
apicid : 8
initial apicid : 8
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.43
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 5
cpu cores : 6
apicid : 10
initial apicid : 10
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.44
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 0
cpu cores : 6
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6804.01
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 1
cpu cores : 6
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.60
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 8
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 2
cpu cores : 6
apicid : 5
initial apicid : 5
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.59
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 9
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 3
cpu cores : 6
apicid : 7
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.56
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 10
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 4
cpu cores : 6
apicid : 9
initial apicid : 9
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.53
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:

processor : 11
vendor_id : GenuineIntel
cpu family : 6
model : 62
model name : Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
stepping : 4
microcode : 0x416
cpu MHz : 3399.968
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 5
cpu cores : 6
apicid : 11
initial apicid : 11
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 6803.55
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:


* config and/or log files etc.


Steps to reproduce:
Reboot
This task depends upon

Closed by  Doug Newgard (Scimmia)
Friday, 20 October 2017, 15:03 GMT
Reason for closing:  Fixed
Comment by Clemens (uiop) - Thursday, 14 July 2016, 13:28 GMT
I tested now different kernels, the problem only appears with 4.6x kernels, 4.5x work flawlessly. Can you give me hints how to report that upstream?
Comment by Philip Whitfield (underdoeg) - Thursday, 14 July 2016, 15:36 GMT
I have the same issue (also running intel i7). Switching to linux-lts solved it for me.
Comment by Clemens (uiop) - Sunday, 17 July 2016, 00:49 GMT
installing linux-lts installed 4.6.3-1, where the same problem appears.
Comment by Clemens (uiop) - Sunday, 17 July 2016, 13:58 GMT
Ok, I forgot to change GRUB settings. Now running 4.4.15-1-lts and the system doesn't seem to be slow anymore. htop still shows 0% cpu usage for all processes.
Comment by Adam Schubert (Sadam) - Friday, 12 August 2016, 04:20 GMT
Same here guys
Linux x304 4.6.4-1-ARCH #1 SMP PREEMPT Mon Jul 11 19:12:32 CEST 2016 x86_64 GNU/Linux
Intel(R) Core(TM) i7-5960X CPU @ 3.00GHz
Htop shows all 0%
Comment by mattia (nTia89) - Tuesday, 03 October 2017, 20:12 GMT
is this issue still valid?
Comment by Clemens (uiop) - Friday, 20 October 2017, 10:12 GMT
I'm now running 4.13.5-1-ARCH. The system doesn't feel slow. Htop shows reasonable cpu load. But cat /proc/cpuinfo shows a constant cpu MHz of about 3400 for all cores (It varies a bit on every reboot). On Windows the same when I run cat /proc/cpuinfo in cygwin.

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