Kernel preemption is disabled - random crashes using xmms over NFS.
Related possibly?
Grover Lines
grover at ceribus.net
Mon Aug 2 03:58:55 PDT 2004
I was reading up about a message i saw in my dmesg output
WARNING: Kernel preemption is disabled, expect reduced performance.
and came accross a message in current a while back saying.
You'll see the following warning on boot:
WARNING: Kernel preemption is disabled, expect reduced performance.
An example of this reduced performance is sound issues (slowdowns, pops,
etc.) when the system is under load (most notably with disk load).
This is exactly what I am seeing also. Using xmms in xorg playing mp3's
over NFS, I can reproduce random hard lockups on my machine doing this.
purgatory# vmstat -i
interrupt total rate
irq0: clk 567052 99
irq8: rtc 725836 127
irq11: nvidia0 450361 79
irq12: rl0 uhci0++ 129058 22
irq13: npx0 1 0
irq14: ata0 142578 25
irq15: ata1 54 0
Total 2014940 355
also is my nic card supposed to be sharingand irq qith my usb? This has
just happened within the last day or so.
Built world kernel, xorg only using p4 as a cpu type no -O optomizations.
also im seeing
kernel: Warning: pid 524 used static ldt allocation.
kernel: See the i386_set_ldt man page for more info
kernel: pid 524 (glxgears), uid 0: exited on signal 11 (core dumped)
or any x program
kernel: pid 36698 (glxinfo), uid 0: exited on signal 11 (core dumped)
--
Grover Lines
dmesg output
Copyright (c) 1992-2004 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 5.2-CURRENT #0: Sun Aug 1 13:33:20 PDT 2004
root at xxx###.net:/usr/obj/usr/src/sys/PSYCHO
WARNING: Kernel preemption is disabled, expect reduced performance.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Pentium(R) 4 CPU 1.50GHz (1514.92-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf12 Stepping = 2
Features=0x3febf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM>
real memory = 536805376 (511 MB)
avail memory = 515624960 (491 MB)
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <VT8753 VPSDACPI> on motherboard
acpi0: [GIANT-LOCKED]
acpi0: Power Button (fixed)
unknown: I/O range not supported
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
cpu0: <ACPI CPU (3 Cx states)> on acpi0
acpi_tz0: <Thermal Zone> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port
0x5000-0x500f,0x4080-0x40ff,0x4000-0x407f,0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <VIA Generic host to PCI bridge> mem 0xc0000000-0xcfffffff at
device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
nvidia0: <GeForce3 Ti 200> mem
0xd4000000-0xd407ffff,0xd0000000-0xd3ffffff,0xd8000000-0xd8ffffff irq 11
at device 0.0 on pci1
nvidia0: [GIANT-LOCKED]
rl0: <RealTek 8139 10/100BaseTX> port 0xa000-0xa0ff mem
0xda000000-0xda0000ff irq 12 at device 7.0 on pci0
miibus0: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus0
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl0: Ethernet address: 00:50:ba:42:d9:4d
rl0: [GIANT-LOCKED]
isab0: <PCI-ISA bridge> at device 17.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <VIA 8233 UDMA100 controller> port
0xa400-0xa40f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 17.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
uhci0: <VIA 83C572 USB controller> port 0xa800-0xa81f irq 12 at device
17.2 on pci0
uhci0: [GIANT-LOCKED]
usb0: <VIA 83C572 USB controller> on uhci0
usb0: USB revision 1.0
uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
ums0: Microsoft Microsoft IntelliMouse\M-. Optical, rev 1.10/1.21, addr
2, iclass 3/1
ums0: 5 buttons and Z dir.
ukbd0: Logitech Logitech USB Keyboard, rev 1.10/12.10, addr 3, iclass 3/1
kbd0 at ukbd0
uhid0: Logitech Logitech USB Keyboard, rev 1.10/12.10, addr 3, iclass 3/0
uhci1: <VIA 83C572 USB controller> port 0xac00-0xac1f irq 12 at device
17.3 on pci0
uhci1: [GIANT-LOCKED]
usb1: <VIA 83C572 USB controller> on uhci1
usb1: USB revision 1.0
uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
uhci2: <VIA 83C572 USB controller> port 0xb000-0xb01f irq 12 at device
17.4 on pci0
uhci2: [GIANT-LOCKED]
usb2: <VIA 83C572 USB controller> on uhci2
usb2: USB revision 1.0
uhub2: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 2 ports with 2 removable, self powered
pcm0: <VIA VT8233> port 0xb400-0xb4ff irq 5 at device 17.5 on pci0
pcm0: [GIANT-LOCKED]
pcm0: <Avance Logic ALC200 AC97 Codec>
pmtimer0 on isa0sc0: <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 1514924252 Hz quality 800
Timecounters tick every 10.000 msec
acpi_cpu: throttling enabled, 2 steps (100% to 50.0%), currently 100.0%
ad0: 38166MB <WDC WD400BB-00AUA1> [77545/16/63] at ata0-master UDMA100
ATAPI_RESET time = 10us
acd0: DVDR <PIONEER DVD-RW DVR-105> at ata1-master UDMA33
Mounting root from ufs:/dev/ad0s3a
Warning: pid 521 used static ldt allocation.
See the i386_set_ldt man page for more info
More information about the freebsd-current
mailing list