http://bugzilla.kernel.org/show_bug.cgi?id=12795
Summary: constant hight cpu usage of kacpid
Product: ACPI
Version: 2.5
KernelVersion: 2.6.28.7
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Config-Interrupts
AssignedTo: [email protected]
ReportedBy: [email protected]
Distribution: ARCH
Hardware Environment: Sony Vaio VGN-TT11/LN
Problem Description: kacpid(_notify) constantly use 60-70% of CPU time
[m...@pygmytarsier ~]$ ps aux | grep acpi
root 16 60.7 0.0 0 0 ? R< 15:35 108:15 [kacpid]
root 17 7.3 0.0 0 0 ? S< 15:35 13:06 [kacpi_notify]
hal 4758 0.0 0.0 2008 856 ? S 15:35 0:00
hald-addon-acpi: listening on acpid socket /var/run/acpid.socket
root 5121 0.0 0.0 1680 580 ? Ss 15:39 0:00
/usr/sbin/acpid
Looks like I have a lot of interrupts:
[m...@pygmytarsier ~]$ vmstat 1 10
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 0 0 1038288 70120 468648 0 0 13 19 650 1605 6 37 56 1
1 0 0 1037648 70120 468648 0 0 0 0 9276 15695 12 38 50 0
1 0 0 1038268 70120 468648 0 0 0 0 9759 16271 10 38 52 0
2 0 0 1037804 70120 468648 0 0 0 0 9528 16428 11 40 49 0
3 0 0 1038252 70120 468648 0 0 0 0 9488 16373 11 39 50 0
2 0 0 1037788 70120 468648 0 0 0 0 9382 16174 12 39 50 0
2 0 0 1038284 70120 468648 0 0 0 0 9205 15838 10 40 50 0
1 0 0 1037884 70120 468648 0 0 0 0 9582 16460 11 38 51 0
1 0 0 1038300 70120 468648 0 0 0 0 9498 16398 12 39 50 0
3 0 0 1037884 70120 468648 0 0 0 0 9304 16126 11 37 51 0
[m...@pygmytarsier ~]$ uptime && cat /proc/interrupts
18:34:36 up 2:59, 5 users, load average: 1.49, 1.40, 1.29
CPU0 CPU1
0: 1899738 1986042 IO-APIC-edge timer
1: 7561 7887 IO-APIC-edge i8042
6: 2 1 IO-APIC-edge sony-laptop
8: 6 9 IO-APIC-edge rtc0
9: 22085708 21992064 IO-APIC-fasteoi acpi
12: 114445 120810 IO-APIC-edge i8042
20: 0 0 IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb6,
uhci_hcd:usb7, uhci_hcd:usb8, yenta
21: 977 953 IO-APIC-fasteoi HDA Intel, ohci1394
22: 0 0 IO-APIC-fasteoi mmc0
23: 202159 197711 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb3,
uhci_hcd:usb4, uhci_hcd:usb5
761: 146325 150727 PCI-MSI-edge iwlagn
762: 25778 24263 PCI-MSI-edge i...@pci:0000:00:02.0
764: 13004 14253 PCI-MSI-edge ahci
NMI: 0 0 Non-maskable interrupts
LOC: 1998012 1935167 Local timer interrupts
RES: 19789098 27011292 Rescheduling interrupts
CAL: 28 66 Function call interrupts
TLB: 165 189 TLB shootdowns
TRM: 0 0 Thermal event interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
MIS: 0
Note: I just guessed a bug component...
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