I'm very interested about any tips how to tune MM not to make
this happen.
How to make it happen:
- change bonnie to start at write intelligently stage
- cd to your raid5 device
- ./maage_bon -s 500 & ./maage_bon -s 500
and after couple of seconds:
Out of memory for maage_bon.
Out of memory for maage_bon.
or any other process including init. :(
$ cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 64897024 63221760 1675264 2801664 41943040 6111232
Swap: 133885952 3084288 130801664
MemTotal: 63376 kB
MemFree: 1636 kB
MemShared: 2736 kB
Buffers: 40960 kB
Cached: 5968 kB
SwapTotal: 130748 kB
SwapFree: 127736 kB
$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 5
model : 8
model name : AMD-K6(tm) 3D processor
stepping : unknown
cpu MHz : 300.688655
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr mce cx8 sep mmx 3dnow
bogomips : 599.65
$ dmesg
Linux version 2.2.0-pre4 (root@localhost) (gcc version 2.7.2.3) #2
Mon Jan 4 17:28:02 EET 1999
Detected 300688655 Hz processor.
ide_setup: ide1=autotune
ide_setup: ide2=autotune
ide_setup: ide3=autotune
Console: colour VGA+ 80x25
Calibrating delay loop... 599.65 BogoMIPS
Memory: 63340k/65536k available (776k kernel code, 412k reserved, 972k data, 36k
init)
CPU: AMD AMD-K6(tm) 3D processor
Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
PCI: PCI BIOS revision 2.10 entry at 0xfb210
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: 00:38 [1106/0586]: Work around ISA DMA hangs (00)
Activating ISA DMA hang workarounds.
Swansea University Computer Society NET3.039 for Linux 2.1
NET3: Unix domain sockets 0.16 for Linux NET3.038.
Swansea University Computer Society TCP/IP for NET3.037
IP Protocols: ICMP, UDP, TCP, IGMP
Initializing RT netlink socket
Starting kswapd v 1.5
Serial driver version 4.27 with no serial options enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
pty: 256 Unix98 ptys configured
Real Time Clock Driver v1.09
VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xc000-0xc007, BIOS settings: hda:DMA, hdb:DMA
ide0: VIA Bus-Master (U)DMA Timing Config Success
ide1: BM-DMA at 0xc008-0xc00f, BIOS settings: hdc:DMA, hdd:DMA
ide1: VIA Bus-Master (U)DMA Timing Config Success
AEC6210: IDE controller on PCI bus 00 dev 48
AEC6210: not 100% native mode: will probe irqs later
AEC6210: ROM enabled at 0xe9000000
ide2: BM-DMA at 0xd800-0xd807, BIOS settings: hde:pio, hdf:pio
ide3: BM-DMA at 0xd808-0xd80f, BIOS settings: hdg:pio, hdh:pio
hda: FUJITSU MPC3032AT, ATA DISK drive
hdb: IBM-DTTA-351350, ATA DISK drive
hdc: IBM-DTTA-351350, ATA DISK drive
hdd: IBM-DTTA-351350, ATA DISK drive
hde: IBM-DTTA-351350, ATA DISK drive
hdg: IBM-DTTA-351350, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
ide2 at 0xc800-0xc807,0xcc02 on irq 10
ide3 at 0xd000-0xd007,0xd402 on irq 10 (shared with ide2)
hda: FUJITSU MPC3032AT, 3093MB w/0kB Cache, CHS=785/128/63, UDMA
hdb: IBM-DTTA-351350, 12897MB w/464kB Cache, CHS=26205/16/63, UDMA
hdc: IBM-DTTA-351350, 12897MB w/464kB Cache, CHS=26205/16/63, UDMA
hdd: IBM-DTTA-351350, 12897MB w/464kB Cache, CHS=26205/16/63, UDMA
hde: IBM-DTTA-351350, 12897MB w/464kB Cache, CHS=26205/16/63, UDMA
hdg: IBM-DTTA-351350, 12897MB w/464kB Cache, CHS=26205/16/63, UDMA
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
md driver 0.36.6 MAX_MD_DEV=4, MAX_REAL=8
raid5 personality registered
Partition check:
hda: hda1 hda2 < hda5 hda6 hda7 hda8 >
hdb: hdb1 < hdb5 >
hdc: hdc1 < hdc5 >
hdd: hdd1 < hdd5 >
hde: hde1 < hde5 >
hdg: hdg1 < hdg5 >
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 36k freed
Adding Swap: 130748k swap-space (priority -1)
ne.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)
NE*000 ethercard probe at 0x220: 00 20 18 61 55 bf
eth0: NE2000 found at 0x220, using IRQ 5.
tty_io.c: process 319 (gpm) used obsolete /dev/cua0 - update software to use /de
v/ttyS0
REGISTER_DEV hdb5 to md0 done
REGISTER_DEV hdc5 to md0 done
REGISTER_DEV hdd5 to md0 done
REGISTER_DEV hde5 to md0 done
REGISTER_DEV hdg5 to md0 done
raid5: device 03:45 operational as raid disk 0
raid5: device 16:05 operational as raid disk 1
raid5: device 16:45 operational as raid disk 2
raid5: device 21:05 operational as raid disk 3
raid5: device 22:05 operational as raid disk 4
raid5: allocated 5306kB for 09:00
raid5: raid level 5 set 09:00 active with 5 out of 5 devices, algorithm 0
md: updating raid superblock on device 03:45, sb_offset == 13207168
md: updating raid superblock on device 16:05, sb_offset == 13207168
md: updating raid superblock on device 16:45, sb_offset == 13207168
md: updating raid superblock on device 21:05, sb_offset == 13207168
md: updating raid superblock on device 22:05, sb_offset == 13207168
$ config
CONFIG_EXPERIMENTAL=y
CONFIG_M586TSC=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_TSC=y
CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KMOD=y
CONFIG_NET=y
CONFIG_PCI=y
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_QUIRKS=y
CONFIG_SYSVIPC=y
CONFIG_SYSCTL=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_AUTO=y
CONFIG_BLK_DEV_VIA82C586=y
CONFIG_IDE_CHIPSETS=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_MD=y
CONFIG_MD_LINEAR=m
CONFIG_MD_STRIPED=m
CONFIG_MD_MIRRORING=m
CONFIG_MD_RAID5=y
CONFIG_PARIDE_PARPORT=y
CONFIG_PACKET=y
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_FIREWALL=y
CONFIG_NET_ALIAS=y
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_FIREWALL=y
CONFIG_IP_FIREWALL_NETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE=m
CONFIG_IP_ALIAS=y
CONFIG_SYN_COOKIES=y
CONFIG_INET_RARP=m
CONFIG_IP_NOSR=y
CONFIG_SKB_LARGE=y
CONFIG_NETDEVICES=y
CONFIG_DUMMY=m
CONFIG_NET_ETHERNET=y
CONFIG_NET_VENDOR_3COM=y
CONFIG_EL3=m
CONFIG_VORTEX=m
CONFIG_NET_ISA=y
CONFIG_DEPCA=m
CONFIG_NE2000=m
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_NVRAM=m
CONFIG_RTC=y
CONFIG_AUTOFS_FS=m
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_ROMFS_FS=m
CONFIG_EXT2_FS=y
CONFIG_CODA_FS=m
CONFIG_NFS_FS=y
CONFIG_SUNRPC=y
CONFIG_LOCKD=y
CONFIG_SMB_FS=m
CONFIG_NLS=y
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_KOI8_R=m
CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
CONFIG_MAGIC_SYSRQ=y
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