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884MB оперативки вместо 1GB
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chernousov
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Joined: 30 May 2004
Posts: 117

PostPosted: Sun Jun 13, 2004 3:07 pm    Post subject: 884MB оперативки вместо 1GB Reply with quote

Имею машину с гигом оперативки. Kernel был и 2.6.4, и 2.6.5, а сейчас 2.6.6. Странное дело:
Code:
# free
             total       used       free     shared    buffers     cached
Mem:        905648     541852     363796          0      35976     275212
...

# cat /proc/meminfo
MemTotal:       905648 kB
...

Кернел при загрузке тоже что-то говорит на тему 884Mb RAM (905648/1024=~884). Но на самом деле у меня 1Gb. Куда подевались остальные 140 мегов?
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deadlyFROZEN
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PostPosted: Sun Jun 13, 2004 3:17 pm    Post subject: предположение Reply with quote

попробуй Processor Type Features->High Memory Support->4GB
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n00b
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Joined: 21 Feb 2004
Posts: 54
Location: Kzn

PostPosted: Sun Jun 13, 2004 3:24 pm    Post subject: Reply with quote

Похоже что ядро собрано без поддержки CONFIG_HIGHMEM4G=y, в Processor type and features ---> High Memory Support. Вывод омманды dmesg сообщает об этом.
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chernousov
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Joined: 30 May 2004
Posts: 117

PostPosted: Sun Jun 13, 2004 3:50 pm    Post subject: Reply with quote

Про эту опцию я знаю, но я RTFM, и там написано:
Code:
 Linux Kernel v2.6.6 Configuration
 ────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  ┌─────────────────────────────────────────────────────────────── off ───────────────────────────────────────────────────────────────┐
  │ CONFIG_NOHIGHMEM:                                                                                                                 │
  │                                                                                                                                   │
[...skipped...]
  │                                                                                                                                   │
  │ If you are compiling a kernel which will never run on a machine with                                                              │
  │ more than 1 Gigabyte total physical RAM, answer "off" here (default                                                               │
  │ choice and suitable for most users).                                                                                              │
  │                                                                                                                                   │
[...skipped...]
  │                                                                                                                                   │
  │ If the machine has between 1 and 4 Gigabytes physical RAM, then                                                                   │
  │ answer "4GB" here.                                                                                                                │
  │                                                                                                                                   │
[...skipped...]
Не совсем однозначно сочетаются фразы "between 1 and 4 Gigabytes" и "more than 1 Gigabyte". Условие "more than 1 Gigabyte" для моей машины точно не справедливо. Но, в то же время, условие "between 1 and 4 Gigabytes" справедливо лишь если добавить слово "inclusive" ("включительно").

В общем, эксперимент покажет. На досуге пересоберу ядро.
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chernousov
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PostPosted: Sun Jun 13, 2004 3:54 pm    Post subject: Reply with quote

ator wrote:
Вывод омманды dmesg сообщает об этом.
На всякий случай dmesg в студию:
Code:
...
ACPI: Power Button (FF) [PWRF]
ACPI: Processor [CPU1] (supports C1, 8 throttling states)
Console: switching to colour frame buffer device 160x64
Real Time Clock Driver v1.12
Non-volatile memory driver v1.2
hw_random: RNG not detected
Serial: 8250/16550 driver $Revision: 1.90 $ 8 ports, IRQ sharing disabled
Using anticipatory io scheduler
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
loop: loaded (max 8 devices)
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH4: IDE controller at PCI slot 0000:00:1f.1
ICH4: chipset revision 1
ICH4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:pio, hdd:DMA
hda: ST3120026A, ATA DISK drive
hdb: ST340016A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdd: CD-W524E, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 1024KiB
hda: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=16383/255/63, UDMA(100)
 /dev/ide/host0/bus0/target0/lun0: p1 p2 p3
hdb: max request size: 128KiB
hdb: 78165360 sectors (40020 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100)
 /dev/ide/host0/bus0/target1/lun0: p1 p2 < p5 >
hdd: ATAPI 40X CD-ROM CD-R/RW drive, 1404kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
mice: PS/2 mouse device common for all mice
serio: i8042 AUX port at 0x60,0x64 irq 12
input: ImExPS/2 Logitech Explorer Mouse on isa0060/serio1
serio: i8042 KBD port at 0x60,0x64 irq 1
input: AT Translated Set 2 keyboard on isa0060/serio0
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
NET: Registered protocol family 1
NET: Registered protocol family 17
ACPI: (supports S0 S1 S4 S5)
RAMDISK: Compressed image found at block 0
VFS: Mounted root (ext2 filesystem) readonly.
Mounted devfs on /dev
Freeing unused kernel memory: 160k freed
usbcore: registered new driver usbfs
usbcore: registered new driver hub
ehci_hcd 0000:00:1d.7: Intel Corp. 82801DB USB2
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: irq 10, pci mem f9877c00
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
PCI: cache line size of 128 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: USB 2.0 enabled, EHCI 1.00, driver 2003-Dec-29
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 6 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
found reiserfs format "3.6" with standard journal
reiserfs: using ordered data mode
Reiserfs journal params: device hda3, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
reiserfs: checking transaction log (hda3) for (hda3)
Using r5 hash to sort names
Adding 506036k swap on /dev/hda2.  Priority:-1 extents:1
3c59x: Donald Becker and others. www.scyld.com/network/vortex.html
0000:03:02.0: 3Com PCI 3c905C Tornado at 0xd400. Vers LK1.1.19
nvidia: module license 'NVIDIA' taints kernel.
0: nvidia: loading NVIDIA Linux x86 NVIDIA Kernel Module  1.0-5336  Wed Jan 14 18:29:26 PST 2004
found reiserfs format "3.6" with standard journal
reiserfs: using ordered data mode
Reiserfs journal params: device hdb5, size 8192, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
reiserfs: checking transaction log (hdb5) for (hdb5)
Using r5 hash to sort names
Linux agpgart interface v0.100 (c) Dave Jones
agpgart: Detected an Intel 845G Chipset.
agpgart: Maximum main memory to use for agp memory: 816M
agpgart: AGP aperture is 64M @ 0xe0000000
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:1d.0: Intel Corp. 82801DB USB (Hub #1)
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: irq 11, io base 0000e400
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
uhci_hcd 0000:00:1d.1: Intel Corp. 82801DB USB (Hub #2)
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: irq 3, io base 0000e800
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
uhci_hcd 0000:00:1d.2: Intel Corp. 82801DB USB (Hub #3)
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: irq 5, io base 0000ec00
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
Creative EMU10K1 PCI Audio Driver, version 0.20a, 15:51:49 Jun  6 2004
ohci_hcd: 2004 Feb 02 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ohci_hcd: block sizes: ed 64 td 64
vmmon: module license 'unspecified' taints kernel.
/dev/vmmon: Module vmmon: registered with major=10 minor=165
/dev/vmmon: Module vmmon: initialized
vmnet: module license 'unspecified' taints kernel.
/dev/vmnet: open called by PID 7632 (vmnet-bridge)
/dev/vmnet: hub 0 does not exist, allocating memory.
/dev/vmnet: port on hub 0 successfully opened
bridge-eth0: enabling the bridge
bridge-eth0: up
bridge-eth0: already up
bridge-eth0: attached
/dev/vmnet: open called by PID 7647 (vmnet-natd)
/dev/vmnet: hub 8 does not exist, allocating memory.
/dev/vmnet: port on hub 8 successfully opened
nfs warning: mount version older than kernel
nfs warning: mount version older than kernel
nfs warning: mount version older than kernel
process `snmpd' is using obsolete setsockopt SO_BSDCOMPAT
/dev/vmnet: open called by PID 8176 (vmnet-netifup)
/dev/vmnet: port on hub 8 successfully opened
/dev/vmnet: open called by PID 8195 (vmnet-dhcpd)
/dev/vmnet: port on hub 8 successfully opened
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
atkbd.c: Unknown key released (translated set 2, code 0x7a on isa0060/serio0).
atkbd.c: This is an XFree86 bug. It shouldn't access hardware directly.
atkbd.c: Unknown key released (translated set 2, code 0x7a on isa0060/serio0).
atkbd.c: This is an XFree86 bug. It shouldn't access hardware directly.
/dev/vmnet: open called by PID 8722 (vmware-vmx)
bridge-eth0: set IFF_PROMISC
eth0: Setting promiscuous mode.
/dev/vmnet: port on hub 0 successfully opened
/dev/vmmon: fast clock rate 0 -> 19
/dev/vmmon: fast clock rate 19 -> 27
/dev/vmmon: fast clock rate 27 -> 100
end_request: I/O error, dev fd0, sector 0
floppy0: disk absent or changed during operation
...
Ничего похожего на обсуждаемую проблему я не вижу.
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deadlyFROZEN
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PostPosted: Sun Jun 13, 2004 4:52 pm    Post subject: хех Reply with quote

Ну вот. Ты не видишь в dmesg ничего, связанного с этой проблемой, а ядро не видит все твои 1024 мегабайт. Око за око, зуб за зуб :roll:
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...whether tis nobler? from the win to suffer,
from the bugs ´n issues of a commercial system
or to raise your mind against a sea of troubles,
and by a LINUX end them?...
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chernousov
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PostPosted: Sun Jun 13, 2004 11:13 pm    Post subject: Reply with quote

Да, действительно, включение в ядре поддержки 4ГБ дало положительный результат. Всем спасибо!
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deadlyFROZEN
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PostPosted: Mon Jun 14, 2004 7:42 am    Post subject: Reply with quote

ура! :)
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from the bugs ´n issues of a commercial system
or to raise your mind against a sea of troubles,
and by a LINUX end them?...
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