ich hoffe, dass der Beitrag hier nicht OT ist.
Ich habe eine virtualisierte Testinstallation aufgesetzt.
Bislang kam diese locker mit 128 MB bis 512 MB zugeordneten RAM aus. Nun teste ich aber gerade einen Agenten, der offensichtlich etwas hungriger ist (BERALUS), sodass ich die Speicherzuordnung auf 1 GB erweitert habe mit dem Ergebnis, dass das Linux kurz nach "Freeing unused kernel memory" haengt. Die CPU-Last dieses Prozesses geht dann auf ca. 50% - ich denke, dass der Host hier eine CPU auf 100% hochzieht...
Ich hab mal rumgegoogled und keine Loesung fuer das Problem gefunden und auch getestet, wo nun die magische Grenze liegt. 624 MB laeuft noch, ab 625 MB ist es dann vorbei:
Dies ist uebrigens bei allen getesteten Kernelversion dasselbe:
Hier ein paar weiterfuehrende Informationen, wenn das System mit 624 MB gestartet ist
Code: Alles auswählen
# dmesg
Linux version 2.6.18-6-686 (Debian 2.6.18.dfsg.1-18etch1) (waldiATTdebianDOTorg) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #1 SMP Sun Feb 10 22:11:31 UTC 2008
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 0000000026ff0000 (usable)
BIOS-e820: 0000000026ff0000 - 0000000026fff000 (ACPI data)
BIOS-e820: 0000000026fff000 - 0000000027000000 (ACPI NVS)
BIOS-e820: 00000000fffc0000 - 0000000100000000 (reserved)
0MB HIGHMEM available.
623MB LOWMEM available.
On node 0 totalpages: 159728
DMA zone: 4096 pages, LIFO batch:0
Normal zone: 155632 pages, LIFO batch:31
DMI 2.3 present.
ACPI: RSDP (v000 ACPIAM ) @ 0x000f52c0
ACPI: RSDT (v001 A M I OEMRSDT 0x08000314 MSFT 0x00000097) @ 0x26ff0000
ACPI: FADT (v002 A M I OEMFACP 0x08000314 MSFT 0x00000097) @ 0x26ff0200
ACPI: OEMB (v001 A M I OEMBIOS 0x08000314 MSFT 0x00000097) @ 0x26fff040
ACPI: DSDT (v001 AMIBI AMIBI002 0x00000002 INTL 0x02002026) @ 0x00000000
ACPI: PM-Timer IO Port: 0x408
Allocating PCI resources starting at 30000000 (gap: 27000000:d8fc0000)
Detected 2831.832 MHz processor.
Built 1 zonelists. Total pages: 159728
Kernel command line: root=/dev/hda1 ro
Local APIC disabled by BIOS -- you can enable it with "lapic"
mapped APIC to ffffd000 (014ec000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 625460k/638912k available (1541k kernel code, 12848k reserved, 580k data, 196k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 5880.16 BogoMIPS (lpj=11760330)
Security Framework v1.0.0 initialized
SELinux: Disabled at boot.
Capability LSM initialized
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 07c0a97b 00000000 00000000 00000000 00000000 00000000 00000000
CPU: After vendor identify, caps: 07c0a97b 00000000 00000000 00000000 00000000 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 1024K
CPU: After all inits, caps: 07c0a97b 00000000 00000000 00000180 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
Compat vDSO mapped to ffffe000.
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 12k freed
ACPI: Core revision 20060707
ACPI: setting ELCR to 0200 (from 0a00)
CPU0: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 01
SMP motherboard not detected.
Local APIC not detected. Using dummy APIC emulation.
Brought up 1 CPUs
migration_cost=0
checking if image is initramfs... it is
Freeing initrd memory: 4375k freed
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: Using configuration type 1
Setting up standard PCI resources
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
* Found PM-Timer Bug on the chipset. Due to workarounds for a bug,
* this clock source is slow. Consider trying other clock sources
PCI quirk: region 0400-043f claimed by PIIX4 ACPI
PCI quirk: region 0440-044f claimed by PIIX4 SMB
Boot video device is 0000:00:08.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 9 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 *9 10 11 12 14 15)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 14 devices
PnPBIOS: Disabled by ACPI PNP
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report
pnp: 00:0c: ioport range 0x400-0x43f could not be reserved
pnp: 00:0c: ioport range 0x370-0x371 has been reserved
pnp: 00:0c: ioport range 0x440-0x44f has been reserved
PCI: Ignore bogus resource 6 [0:0] of 0000:00:08.0
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1206462672.540:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
Limiting direct PCI/PCI transfers.
isapnp: Scanning for PnP cards...
isapnp: checksum for device 1 is not valid (0xbe)
isapnp: Card 'Game Port'
isapnp: 1 Plug & Play card detected total
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a TI16750
serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a TI16750
00:07: ttyS0 at I/O 0x3f8 (irq = 4) is a TI16750
00:08: ttyS1 at I/O 0x2f8 (irq = 3) is a TI16750
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
PNP: PS/2 Controller [PNP0303:PS2K,PNP0f03:PS2M] at 0x60,0x64 irq 1,12
serio: i8042 AUX port at 0x60,0x64 irq 12
serio: i8042 KBD port at 0x60,0x64 irq 1
mice: PS/2 mouse device common for all mice
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
NET: Registered protocol family 8
NET: Registered protocol family 20
Using IPI No-Shortcut mode
Time: tsc clocksource has been installed.
ACPI: (supports S0 S5)
Freeing unused kernel memory: 196k freed
input: AT Translated Set 2 keyboard as /class/input/input0
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller at PCI slot 0000:00:07.1
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
Linux Tulip driver version 1.1.13-NAPI (May 11, 2002)
hda: Virtual HD, ATA DISK drive
hdb: Virtual HD, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: Virtual CD, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
tulip0: EEPROM default media type 100baseTx-FDX.
tulip0: Index #0 - Media 100baseTx (#3) described by a 21140 non-MII (0) block.
tulip0: Index #1 - Media 100baseTx-FDX (#5) described by a 21140 non-MII (0) block.
eth0: Digital DS21140 Tulip rev 32 at 0001ec00, 00:03:FF:F7:8B:9A, IRQ 11.
hda: max request size: 128KiB
hda: 33554304 sectors (17179 MB) w/64KiB Cache, CHS=33288/16/63, DMA
hda: hda1 hda2 < hda5 >
hdb: max request size: 128KiB
hdb: 33554304 sectors (17179 MB) w/64KiB Cache, CHS=33288/16/63, DMA
hdb: hdb1
hdc: ATAPI DVD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.20
Attempting manual resume
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
input: PC Speaker as /class/input/input1
trackpoint.c: failed to get extended button data
piix4_smbus 0000:00:07.3: Found 0000:00:07.3 device
parport: PnPBIOS parport detected.
parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE,EPP]
Real Time Clock Driver v1.12ac
Floppy drive(s): fd0 is 1.44M
FDC 0 is an 82078.
pnp: Device 01:01.00 activated.
gameport: NS558 PnP Gameport is pnp01:01.00/gameport0, io 0x201, speed 95kHz
Adding 4000240k swap on /dev/hdb1. Priority:-1 extents:1 across:4000240k
EXT3 FS on hda1, internal journal
IBM TrackPoint firmware: 0x01, buttons: 0/0
input: TPPS/2 IBM TrackPoint as /class/input/input2
ts: Compaq touchscreen protocol output
airo(): Probing for PCI adapters
airo(): Finished probing for PCI adapters
device-mapper: ioctl: 4.7.0-ioctl (2006-06-24) initialised: dm-develATTredhatDOTcom
eth0: Using EEPROM-set media 100baseTx-FDX.
Installing knfsd (copyright (C) 1996 okirATTmonadDOTswbDOTde).
NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
NFSD: starting 90-second grace period
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
eth0: no IPv6 routers presentDanke & Bye...