High interrupt on Dell PowerEdge 2400
Eli K. Breen
bsd at unixforge.net
Tue Jan 24 14:25:09 PST 2006
Does anyone have any explanation and resolution for the excessive
interrupt%?:
(System dmesg at the end of this message)
=======================================================
last pid: 2756; load averages: 0.00, 0.00, 0.00
up 0+15:22:49 14:02:47
20 processes: 1 running, 19 sleeping
CPU states: 0.4% user, 0.0% nice, 0.0% system, 16.1% interrupt, 83.5%
idle
Mem: 6540K Active, 118M Inact, 97M Wired, 12K Cache, 112M Buf, 1028M Free
Swap: 2048M Total, 2048M Free
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
2235 elib 1 96 0 2368K 1644K RUN 0:19 0.00% top
2233 elib 1 96 0 6076K 3144K select 0:02 0.00% sshd
477 root 1 96 0 3416K 2816K select 0:02 0.00% sendmail
497 root 1 8 0 1312K 1032K nanslp 0:00 0.00% cron
348 root 1 96 0 1292K 872K select 0:00 0.00% syslogd
421 root 1 96 0 1208K 772K select 0:00 0.00% usbd
2229 root 1 4 0 6108K 3136K sbwait 0:00 0.00% sshd
481 smmsp 1 20 0 3296K 2688K pause 0:00 0.00% sendmail
2234 elib 1 8 0 1676K 1256K wait 0:00 0.00% sh
560 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
472 root 1 96 0 3352K 2484K select 0:00 0.00% sshd
567 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
562 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
561 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
563 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
564 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
565 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
566 root 1 5 0 1264K 928K ttyin 0:00 0.00% getty
319 root 1 113 0 500K 352K select 0:00 0.00% devd
171 root 1 20 0 1172K 644K pause 0:00 0.00% adjkerntz
=======================================================
This machine is a totally stock FreeBSD 6.0 box. I haven't done anything
except install the OS and boot it.
Ideas?
DMESG:
=======================================================
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 6.0-RELEASE #0: Thu Nov 3 09:36:13 UTC 2005
root at x64.samsco.home:/usr/obj/usr/src/sys/GENERIC
ACPI APIC Table: <DELL PE2400 >
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel Pentium III (728.44-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x686 Stepping = 6
Features=0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory = 1342169088 (1279 MB)
avail memory = 1305534464 (1245 MB)
ioapic0: Changing APIC ID to 2
ioapic1: Changing APIC ID to 3
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-15 on motherboard
ioapic1 <Version 1.1> irqs 16-31 on motherboard
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <DELL PE2400> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 10 on acpi0
pci_link1: <ACPI PCI Link LNKB> irq 11 on acpi0
pci_link2: <ACPI PCI Link LNKC> on acpi0
pci_link3: <ACPI PCI Link LNKD> on acpi0
pci_link4: <ACPI PCI Link LNKE> irq 11 on acpi0
pci_link5: <ACPI PCI Link LNKF> on acpi0
pci_link6: <ACPI PCI Link LNKG> irq 10 on acpi0
pci_link7: <ACPI PCI Link LNKH> on acpi0
pci_link8: <ACPI PCI Link LNKI> on acpi0
pci_link9: <ACPI PCI Link LNKJ> on acpi0
pci_link10: <ACPI PCI Link LNKK> on acpi0
pci_link11: <ACPI PCI Link LNKL> on acpi0
pci_link12: <ACPI PCI Link LNKM> on acpi0
pci_link13: <ACPI PCI Link LNKN> on acpi0
pci_link14: <ACPI PCI Link LNKO> irq 14 on acpi0
pci_link15: <ACPI PCI Link LNKP> irq 14 on acpi0
pci_link16: <ACPI PCI Link LUSB> irq 5 on acpi0
Timecounter "ACPI-safe" frequency 3579545 Hz quality 1000
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0
pci1: <ACPI PCI bus> on pcib1
ahc0: <Adaptec aic7880 Ultra SCSI adapter> port 0xfc00-0xfcff mem
0xfcfff000-0xfcffffff irq 30 at device 6.0 on pci1
ahc0: [GIANT-LOCKED]
aic7880: Ultra Single Channel A, SCSI Id=7, 16/253 SCBs
vr0: <VIA VT3043 Rhine I 10/100BaseTX> port 0xec80-0xecff mem
0xfe103000-0xfe10307f irq 17 at device 4.0 on pci0
miibus0: <MII bus> on vr0
amphy0: <Am79C873 10/100 media interface> on miibus0
amphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vr0: Ethernet address: 00:50:ba:aa:e5:19
fxp0: <Intel 82559 Pro/100 Ethernet> port 0xec40-0xec7f mem
0xfe102000-0xfe102fff,0xfe000000-0xfe0fffff irq 16 at device 8.0 on pci0
miibus1: <MII bus> on fxp0
inphy0: <i82555 10/100 media interface> on miibus1
inphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
fxp0: Ethernet address: 00:b0:d0:aa:e1:67
pci0: <display, VGA> at device 14.0 (no driver attached)
isab0: <PCI-ISA bridge> port 0x580-0x58f at device 15.0 on pci0
isa0: <ISA bus> on isab0
ohci0: <OHCI (generic) USB controller> mem 0xfe100000-0xfe100fff irq 5
at device 15.2 on pci0
ohci0: [GIANT-LOCKED]
usb0: OHCI version 1.0, legacy support
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: (0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
pcib2: <ACPI Host-PCI bridge> on acpi0
pci2: <ACPI PCI bus> on pcib2
pcib3: <PCI-PCI bridge> at device 12.0 on pci2
pci3: <PCI bus> on pcib3
mlx0: <Mylex version 5 RAID interface> port 0xdc80-0xdcff mem
0xf3fffc00-0xf3fffc7f,0xee000000-0xefffffff irq 22 at device 8.0 on pci3
mlx0: controller initialisation in progress...
mlx0: initialisation complete.
mlx0: [GIANT-LOCKED]
mlx0: DAC1164PVX, 3 channels, firmware 5.08-0-87, 32MB RAM
mlxd0: <Mylex System Drive> on mlx0
mlxd0: 35002MB (71684096 sectors) RAID 1 (online)
pci3: <mass storage, RAID> at device 9.0 (no driver attached)
xl0: <3Com 3c905B-TX Fast Etherlink XL> port 0xcc80-0xccff mem
0xf5000000-0xf500007f irq 20 at device 14.0 on pci2
miibus2: <MII bus> on xl0
bmtphy0: <3c905B 10/100 internal PHY> on miibus2
bmtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
xl0: Ethernet address: 00:50:da:7f:9f:84
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0: <ECP parallel printer port> port 0x378-0x37f,0x778-0x77f irq 7 on
acpi0
ppc0: Generic chipset (ECP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xce000-0xd07ff on isa0
ata0 at port 0x1f0-0x1f7,0x3f6 irq 14 on isa0
ata1 at port 0x170-0x177,0x376 irq 15 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 728443858 Hz quality 800
Timecounters tick every 1.000 msec
Waiting 5 seconds for SCSI devices to settle
cd0 at ahc0 bus 0 target 5 lun 0
cd0: <NEC CD-ROM DRIVE:466 1.06> Removable CD-ROM SCSI-2 device
cd0: 20.000MB/s transfers (20.000MHz, offset 15)
cd0: cd present [282428 x 2048 byte records]
Trying to mount root from ufs:/dev/mlxd0s1a
=======================================================
-Eli
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