Hi,
I have installed 5.8 Release GENERIC i386 on an Acer Aspire 3630
laptop. Even when the system is almost completely idle, `top'
consistently reports an interrupt load in the range 75%--80%.
Admittedly this hardware is more than 8 years old, nevertheless I
believe the load is unusually high, based on limited experience with
installing the same version of OpenBSD on a lower-spec i586 machine.
Is it possible that CPU cycles are being wasted due to the system
being mis-configured? If so, does anyone have any suggestions on how
to reduce the observed load?
dmesg:
OpenBSD 5.8 (GENERIC) #0: Sat Dec 26 21:32:37 GMT 2015
pe...@rebelene.home:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Celeron(R) M processor 1.60GHz ("GenuineIntel"
686-class) 1.61 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE,NXE,PERF
real mem = 467091456 (445MB)
avail mem = 445419520 (424MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: date 03/20/06, BIOS32 rev. 0 @ 0xfd600, SMBIOS rev.
2.31 @ 0x1bdfb000 (35 entries)
bios0: vendor Acer version "3A22" date 03/20/06
bios0: Acer, inc. Aspire 3630
acpi0 at bios0: rev 0
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP APIC SSDT
acpi0: wakeup devices PCI0(S5) LAN_(S5) MODM(S3) KBC_(S4) USB0(S3)
USB1(S3) USB2(S3) USB3(S3)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 99MHz
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 11, 24 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpiec0 at acpi0
acpicpu0 at acpi0: !C3(@900 io@0x8015), !C2(@90 io@0x8014), C1(@1 halt!)
acpitz0 at acpi0: critical temperature is 97 degC
acpiac0 at acpi0: AC unit online
acpibat0 at acpi0: BAT1 not present
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: PWRB
acpibtn2 at acpi0: SLPB
bios0: ROM list: 0xc0000/0xc000 0xcc000/0xa000! 0xdc000/0x8000!
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "SiS 661 PCI" rev 0x11
sisagp0 at pchb0
agp0 at sisagp0: aperture at 0xe0000000, size 0x2000000
ppb0 at pci0 dev 1 function 0 "SiS 648FX AGP" rev 0x00
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "SiS 6330 VGA" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcib0 at pci0 dev 2 function 0 "SiS 85C503 System" rev 0x25
pciide0 at pci0 dev 2 function 5 "SiS 5513 EIDE" rev 0x00: 661: DMA,
channel 0 configured to compatibility, channel 1 configured to
compatibility
wd0 at pciide0 channel 0 drive 0: <HTS541080G9AT00>
wd0: 16-sector PIO, LBA48, 76319MB, 156301488 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <HL-DT-ST, DVD-RW GWA-4082N, CP03> ATAPI
5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, Ultra-DMA mode 2
"SiS 7013 Modem" rev 0xa0 at pci0 dev 2 function 6 not configured
auich0 at pci0 dev 2 function 7 "SiS 7012 AC97" rev 0xa0: apic 1 int
18, SiS7012 AC97
ac97: codec id 0x414c4770 (Avance Logic ALC203 rev 0)
ac97: codec features headphone, 20 bit DAC, 18 bit ADC, No 3D Stereo
audio0 at auich0
ohci0 at pci0 dev 3 function 0 "SiS 5597/5598 USB" rev 0x0f: apic 1
int 20, version 1.0, legacy support
ohci1 at pci0 dev 3 function 1 "SiS 5597/5598 USB" rev 0x0f: apic 1
int 21, version 1.0, legacy support
ehci0 at pci0 dev 3 function 3 "SiS 7002 USB" rev 0x00: apic 1 int 23
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "SiS EHCI root hub" rev 2.00/1.00 addr 1
sis0 at pci0 dev 4 function 0 "SiS 900 10/100BaseTX" rev 0x91: apic 1
int 19, address 00:16:36:58:b8:c3
rlphy0 at sis0 phy 13: RTL8201L 10/100 PHY, rev. 1
cbb0 at pci0 dev 6 function 0 "ENE CB-1410 CardBus" rev 0x01: apic 1 int 19
bwi0 at pci0 dev 11 function 0 "Broadcom BCM4318" rev 0x02: apic 1 int
17, address 00:16:ce:59:63:f8
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pms0: Synaptics touchpad, firmware 6.2
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
usb1 at ohci0: USB revision 1.0
uhub1 at usb1 "SiS OHCI root hub" rev 1.00/1.00 addr 1
usb2 at ohci1: USB revision 1.0
uhub2 at usb2 "SiS OHCI root hub" rev 1.00/1.00 addr 1
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 2 device 0 cacheline 0x0, lattimer 0x20
pcmcia0 at cardslot0
uhidev0 at uhub2 port 2 configuration 1 interface 0 "Logitech USB
Laser Mouse" rev 2.00/31.00 addr 2
uhidev0: iclass 3/1
ums0 at uhidev0: 8 buttons, Z dir
wsmouse1 at ums0 mux 0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on wd0a (a1e28179ecadfc54.a) swap on wd0b dump on wd0b
top:
load averages: 0.11, 0.12, 0.15 rebelene.home 23:22:10
26 processes: 25 idle, 1 on processor
CPU states: 0.4% user, 0.0% nice, 0.2% system, 80.4% interrupt, 19.1% idle
Memory: Real: 15M/99M act/tot Free: 326M Cache: 50M Swap: 0K/514M
PID USERNAME PRI NICE SIZE RES STATE WAIT TIME CPU COMMAND
1 root 10 0 472K 456K idle wait 0:01 0.00% init
14061 _ntp 2 -20 1120K 2264K sleep poll 0:00 0.00% ntpd
30305 _ntp 2 0 932K 1340K idle poll 0:00 0.00% ntpd
25976 _pflogd 4 0 692K 352K sleep bpf 0:00 0.00% pflogd
4209 peter 18 0 644K 672K sleep pause 0:00 0.00% ksh
32659 _syslogd 2 0 960K 1296K idle kqread 0:00 0.00% syslogd
1455 root 2 0 1448K 1924K idle kqread 0:00 0.00% smtpd
17012 _dhcp 2 0 740K 600K idle poll 0:00 0.00% dhclient
1301 _smtpq 2 0 1432K 1992K idle kqread 0:00 0.00% smtpd
7313 root 2 0 656K 1068K sleep poll 0:00 0.00% cron
21267 peter 28 0 436K 1448K onproc - 0:00 0.00% top
26278 _smtpd 2 0 1368K 2332K idle kqread 0:00 0.00% smtpd
13038 root 2 -20 660K 1328K idle poll 0:00 0.00% ntpd
23939 root 2 0 628K 564K idle netio 0:00 0.00% pflogd
6418 _smtpd 2 0 1436K 2020K idle kqread 0:00 0.00% smtpd
23164 root 2 0 960K 1256K idle netio 0:00 0.00% syslogd
25320 _smtpd 2 0 1232K 1764K idle kqread 0:00 0.00% smtpd
28232 root 3 0 288K 1024K idle ttyin 0:00 0.00% getty
vmstat -iz:
interrupt total rate
irq0/clock 151778 100
irq130/acpi0 1 0
irq80/pciide0 3763 2
irq81/pciide0 0 0
irq160/auich0 0 0
irq83/ohci0 0 0
irq84/ohci1 1767 1
irq85/ehci0 2 0
irq82/sis0 488 0
irq82/cbb0 0 0
irq96/bwi0 0 0
irq129/pckbc0 2119 1
irq131/pckbc0 195 0
Total 160113 105
vmstat:
procs memory page disks traps cpu
r b w avm fre flt re pi po fr sr wd0 cd0 int sys cs us sy id
1 0 0 159520 148984 48 0 0 0 0 0 2 0 202905 2571 214 8 81 1
Running 5.8 Release GENERIC.MP i386 did not change the observed
behaviour, nor did applying 005_kevent.patch to 5.8 Release GENERIC
i386.
Kind regards,
Peter
