Question on datasize limits...

Jeffrey Racine jracine at
Wed May 26 07:40:40 PDT 2004


On a dual opteron system with 4 GB of physical RAM and 12 BG of swap
running 5.2.1, I am running a job that produces a seg fault when it
appears to approach the 8GB mark. Limits are reported as follows:

Resource limits (current):
  cputime          infinity secs
  filesize         infinity kb
  datasize          8388608 kb
  stacksize          524288 kb
  coredumpsize     infinity kb
  memoryuse        infinity kb
  memorylocked     infinity kb
  maxprocesses         5547
  openfiles           11095
  sbsize           infinity bytes
  vmemoryuse       infinity kb

and am thinking that it might be the datasize limitation. I have
searched the man and faq as to how to modify datasize to be 12GB (limits
-d 12g) but would like to change this in general. I looked in
/etc/login.conf and see it is unlimited for the default class

My question is, how can I change this to avoid this limit in general?

Thanks for your time and efforts. dmesg follows.

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
FreeBSD 5.2.1-RELEASE #0: Fri May 14 14:49:47 EDT 2004
    root at
Preloaded elf kernel "/boot/kernel/kernel" at 0xffffffff80866000.
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Opteron(tm) Processor 248 (2205.01-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0xf58  Stepping = 8
  AMD Features=0xe0500000<NX,MMX+,LM,3DNow!+,3DNow!>
real memory  = 3674144768 (3503 MB)
avail memory = 3493396480 (3331 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ioapic0 <Version 1.1> irqs 0-23 on motherboard
ioapic1 <Version 1.1> irqs 24-27 on motherboard
ioapic2 <Version 1.1> irqs 28-31 on motherboard
acpi0: <A M I  OEMRSDT > on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x5008-0x500b on acpi0
acpi_cpu0: <CPU> on acpi0
acpi_cpu1: <CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
pcib2: <ACPI PCI-PCI bridge> at device 6.0 on pci0
pci2: <ACPI PCI bus> on pcib2
ohci0: <OHCI (generic) USB controller> mem 0xfd7fe000-0xfd7fefff irq 19
at device 0.0 on pci2
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1: <OHCI (generic) USB controller> mem 0xfd7ff000-0xfd7fffff irq 19
at device 0.1 on pci2
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: AMD OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered
fwohci0: <Texas Instruments TSB43AB22/A> mem
0xfd7f8000-0xfd7fbfff,0xfd7fd800-0xfd7fdfff irq 18 at device 6.0 on pci2
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channel is 4.
fwohci0: EUI64 00:00:00:00:00:01:0e:f8
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:00:00:01:0e:f8
sbp0: <SBP-2/SCSI over FireWire> on firewire0
fwohci0: Initiate bus reset
fwohci0: BUS reset
fwohci0: node_id=0xc800ffc0, gen=1, CYCLEMASTER mode
firewire0: 1 nodes, maxhop <= 0, cable IRM = 0 (me)
firewire0: bus manager 0 (me)
ohci2: <NEC uPD 9210 USB controller> mem 0xfd7f7000-0xfd7f7fff irq 19 at
device 7.0 on pci2
usb2: OHCI version 1.0
usb2: <NEC uPD 9210 USB controller> on ohci2
usb2: USB revision 1.0
uhub2: NEC OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub2: 3 ports with 3 removable, self powered
ohci3: <NEC uPD 9210 USB controller> mem 0xfd7fc000-0xfd7fcfff irq 16 at
device 7.1 on pci2
usb3: OHCI version 1.0
usb3: <NEC uPD 9210 USB controller> on ohci3
usb3: USB revision 1.0
uhub3: NEC OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
pci2: <serial bus, USB> at device 7.2 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <AMD 8111 UDMA133 controller> port 0xffa0-0xffaf at device 7.1
on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata0: [MPSAFE]
ata1: at 0x170 irq 15 on atapci0
ata1: [MPSAFE]
pci0: <bridge, PCI-unknown> at device 7.3 (no driver attached)
pcm0: <AMD-8111> port 0xcc00-0xcc3f,0xc800-0xc8ff irq 17 at device 7.5
on pci0
pcm0: <Avance Logic ALC655 AC97 Codec>
pcib3: <ACPI PCI-PCI bridge> at device 10.0 on pci0
pci3: <ACPI PCI bus> on pcib3
em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.19> port
0xac00-0xac1f mem 0xfd9c0000-0xfd9dffff,0xfd9e0000-0xfd9fffff irq 17 at
device 1.0 on pci3
em0:  Speed:N/A  Duplex:N/A
skc0: <Marvell Gigabit Ethernet> port 0xa800-0xa8ff mem
0xfd99c000-0xfd99ffff irq 19 at device 3.0 on pci3
skc0: Yukon Gigabit Ethernet 10/100/1000Base-T Adapter
sk0: <Marvell Semiconductor, Inc. Yukon> on skc0
sk0: Ethernet address: 00:d0:68:03:d4:99
miibus0: <MII bus> on sk0
e1000phy0: <Marvell 88E1000 Gigabit PHY> on miibus0
e1000phy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX,
1000baseTX-FDX, autopci0: <base peripheral, interrupt controller> at
device 10.1 (no driver attached)
pcib4: <ACPI PCI-PCI bridge> at device 11.0 on pci0
pci4: <ACPI PCI bus> on pcib4
twe0: <3ware 7000 series Storage Controller. Driver version>
port 0xbc00-0xbc0f mem 0xfe000000-0xfe7fffff,0xfeaffc00-0xfeaffc0f irq
17 at device 1.0 on pci4
twe0: 4 ports, Firmware FE7S, BIOS BE7X
pci0: <base peripheral, interrupt controller> at device 11.1 (no driver
acpi_button0: <Power Button> on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model IntelliMouse, device ID 3
sio0 port 0x3f8-0x3ff irq 4 on acpi0
sio0: type 16550A
sio1 port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port
0x3f7,0x3f0-0x3f5 irq 6 drq 2 on acpi0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0 port 0x378-0x37f irq 7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
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
orm0: <Option ROMs> at iomem 0xcf800-0xd07ff,0xc0000-0xcf7ff 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
Timecounters tick every 10.000 msec
acpi_cpu: throttling enabled, 8 steps (100% to 12.5%), currently 100.0%
acd0: CDRW <SAMSUNG CDRW/DVD SM-352B> at ata1-master PIO4
twed0: <Unit 0, TwinStor, Normal> on twe0
twed0: 70910MB (145224064 sectors)
GEOM: create disk twed0 dp=0xffffff00cfb68c18
em0: Link is up 100 Mbps Full Duplex
SMP: AP CPU #1 Launched!
Mounting root from ufs:/dev/twed0s1a
em0: Link is up 100 Mbps Full Duplex

Professor J. S. Racine         Phone:  (315) 443-1630
Department of Economics        FAX:    (315) 443-1081
Syracuse University            e-mail: jracine at
Syracuse, NY, USA 13244-1020

`The generation of random numbers is too important to be left to

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