[Fwd: reboot under high memory/swap/fs load]

John Dent (denty@charmed.demon.co.uk)
Sat, 14 Nov 1998 23:31:19 +0000

Sorry about the repost - hope this one arrives in a better state than the
last.
denty.

> Hi,
> When I do a fresh make (i.e., after a make clean; make dep) on the
> kernel, I can force the kernel to do a reboot.
> A normal make bzImage works fine as you would expect but doing make
> MAKE='make -j 8' bzImage reboots after a few minutes of activity.
> Admittedly make -j 8 isn't perhaps the most social of environments but
> since I've got plenty of swap space over three separate disks (one IDE,
> two SCSI - don't think this should matter, should it?) and 80MB RAM, I
> thought I'd use it.
> Last time I tried, the load avarage according to top was over 20 and
> there was several tens of MB in swap. It was paging like buggery but the
> build was progressing as you'd expect. Then, all of a sudden, the screen
> went black and a few secons later came to life again with the BIOS POST.
>
> I don't really advise anyone to try it unless you're feeling masochistic
> but I thought most of the high MM load problems were sorted by now???
> Some system information follows. (There is nothing of interest in
> /var/adm/*, unfortunately - guess it rebooted before klogd had a
> chance.)
>
> charmed:~> cd /proc/
> charmed:/proc> ls
> 1/ 1798/ 1894/ 2194/ 26444/ meminfo
>
> 11/ 1801/ 1901/ 2195/ 26445/ misc
> 1614/ 1812/ 1902/ 2196/ 26451/ modules
>
> 1616/ 1850/ 1903/ 2197/ 3/ mounts
> 1620/ 1852/ 1904/ 2200/ bus/ net/
> 1634/ 1854/ 1905/ 2202/ cmdline
> parport/
> 1697/ 1856/ 1910/ 2203/ cpuinfo
> partitions
> 1708/ 1858/ 1911/ 2204/ devices pci
> 1712/ 1860/ 1912/ 2218/ dma scsi/
> 1717/ 1867/ 1913/ 2219/ filesystems self@
> 1721/ 1872/ 1914/ 2220/ fs/
> slabinfo
> 1726/ 1873/ 1915/ 2255/ ide/ stat
> 1729/ 1874/ 1968/ 2333/ interrupts swaps
> 1735/ 1875/ 1972/ 2339/ ioports sys/
> 1739/ 1876/ 1973/ 24195/ kcore tty/
> 1746/ 1877/ 1977/ 24196/ kmsg uptime
> 1752/ 1879/ 2/ 2432/ ksyms version
>
> 1754/ 1883/ 2180/ 2464/ loadavg
> 1756/ 1886/ 2191/ 2466/ locks
> 1795/ 1889/ 2192/ 26078/ mdstat
> charmed:/proc> cat cmd
> cat: cmd: No such file or directory
> charmed:/proc> cat cmdline
> auto BOOT_IMAGE=Linux-2.1.127 ro root=305 aha152x=0x340,12
> charmed:/proc> cat cpuinfo
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 5
> model : 2
> model name : Pentium 75 - 200
> stepping : 12
> cpu MHz : 166.196956
> fdiv_bug : no
> hlt_bug : no
> sep_bug : no
> f00f_bug : yes
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8
> bogomips : 66.36
>
> charmed:/proc> cat devices
> Character devices:
> 1 mem
> 2 pty
> 3 ttyp
> 4 ttyS
> 5 cua
> 6 lp
> 7 vcs
> 10 misc
> 21 sg
> 81 video_capture
> 128 ptm
> 136 pts
>
> Block devices:
> 2 fd
> 3 ide0
> 7 loop
> 8 sd
> 9 md
> 11 sr
> charmed:/proc> cat dma
> 4: cascade
> charmed:/proc> cat filesystems
> ext2
> nodev proc
> nodev devpts
> nodev autofs
> iso9660
> vfat
> charmed:/proc> cat interrupts
> CPU0
> 0: 13243871 XT-PIC timer
> 1: 13460 XT-PIC keyboard
> 2: 0 XT-PIC cascade
> 3: 173 XT-PIC serial
> 4: 74261 XT-PIC serial
> 11: 95825 XT-PIC aic7xxx
> 12: 15 XT-PIC aha152x
> 13: 1 XT-PIC fpu
> 14: 156293 XT-PIC ide0
> NMI: 0
> IPI: 0
> charmed:/proc> cat ioports
> 0000-001f : dma1
> 0020-003f : pic1
> 0040-005f : timer
> 0060-006f : keyboard
> 0080-008f : dma page reg
> 00a0-00bf : pic2
> 00c0-00df : dma2
> 00f0-00ff : fpu
> 01f0-01f7 : ide0
> 02f8-02ff : serial(set)
> 0340-035f : aha152x
> 03bc-03be : parport0
> 03c0-03df : vga+
> 03e8-03ef : serial(set)
> 03f6-03f6 : ide0
> 03f8-03ff : serial(set)
> 6000-60be : aic7xxx
> 9000-9007 : ide0
> 9008-900f : ide1
> charmed:/proc> cat kmsg
> cat: kmsg: Permission denied
> charmed:/proc> cat loadavg
> 0.15 0.09 0.06 1/84 26467
> charmed:/proc> cat locks
> 1: FLOCK ADVISORY WRITE 0 09:00:184 0 2147483647 c23da8c0 00000000
> c34525a0 00000000 00000000
> 2: POSIX ADVISORY WRITE 1968 08:15:24183 0 2147483647 c34525a0
> c23da8c0 c34529c0 00000000 00000000
> 3: FLOCK ADVISORY WRITE 0 08:15:24179 0 2147483647 c34529c0 c34525a0
> c3452900 00000000 c3452a20
> 3: -> FLOCK ADVISORY WRITE 0 08:15:24179 0 2147483647 c3452a20
> 00000000 00000000 00000000 c3452a80
> 3: -> FLOCK ADVISORY WRITE 0 08:15:24179 0 2147483647 c3452a80
> 00000000 00000000 00000000 c3452ae0
> 3: -> FLOCK ADVISORY WRITE 0 08:15:24179 0 2147483647 c3452ae0
> 00000000 00000000 00000000 c3452b40
> 3: -> FLOCK ADVISORY WRITE 0 08:15:24179 0 2147483647 c3452b40
> 00000000 00000000 00000000 c34529c0
> 4: FLOCK ADVISORY WRITE 0 08:15:24175 0 2147483647 c3452900 c34529c0
> c34528a0 00000000 00000000
> 5: POSIX ADVISORY WRITE 1886 08:15:24174 0 2147483647 c34528a0
> c3452900 c3452780 00000000 00000000
> 6: POSIX ADVISORY WRITE 1852 08:07:48972 0 2147483647 c3452780
> c34528a0 c3452300 00000000 00000000
> 7: FLOCK ADVISORY WRITE 0 08:15:24129 0 2147483647 c3452300 c3452780
> 00000000 00000000 00000000
> charmed:/proc> cat mdstat
> Personalities : [2 raid0]
> read_ahead 128 sectors
> md0 : active raid0 sda6 sdb8 273040 blocks 4k chunks
> md1 : active raid0 sda8 sdb7 256976 blocks 4k chunks
> md2 : inactive
> md3 : inactive
> charmed:/proc> cat meminfo
> total: used: free: shared: buffers: cached:
> Mem: 81297408 79224832 2072576 38150144 6299648 34738176
> Swap: 341794816 29376512 312418304
> MemTotal: 79392 kB
> MemFree: 2024 kB
> MemShared: 37256 kB
> Buffers: 6152 kB
> Cached: 33924 kB
> SwapTotal: 333784 kB
> SwapFree: 305096 kB
> charmed:/proc> cat misc
> 130 watchdog
> charmed:/proc> cat mounts
> /dev/root / ext2 rw 0 0
> proc /proc proc rw 0 0
> devpts /dev/pts devpts rw 0 0
> /dev/hda3 /vol ext2 rw 0 0
> /dev/md0 /tmp ext2 rw 0 0
> /dev/hda9 /home ext2 rw 0 0
> /dev/sdb5 /var ext2 rw 0 0
> /dev/md1 /usr/lib ext2 rw 0 0
> automount(pid1752) /a/local autofs rw 0 0
> automount(pid1754) /a/vol autofs rw 0 0
> automount(pid1756) /a/opt autofs rw 0 0
> /dev/loop0 /a/vol/news ext2 rw 0 0
> /dev/sda7 /a/opt/oracle ext2 rw 0 0
> /dev/sdb6 /a/vol/postgres95 ext2 rw 0 0
> /dev/loop2 /a/vol/www-cache ext2 rw 0 0
> /dev/hda8 /a/vol/khoros ext2 rw 0 0
> /dev/sdb1 /a/vol/userspace ext2 rw 0 0
> charmed:/proc> cat partitions
> major minor #blocks name
>
> 8 0 1054688 sda
> 8 1 1 sda1
> 8 5 136489 sda5
> 8 6 136521 sda6
> 8 7 514048 sda7
> 8 8 128488 sda8
> 8 16 2113362 sdb
> 8 17 530113 sdb1
> 8 18 72292 sdb2
> 8 19 265072 sdb3
> 8 20 1 sdb4
> 8 21 265041 sdb5
> 8 22 514048 sdb6
> 8 23 128488 sdb7
> 8 24 136521 sdb8
> 9 0 273040 mda
> 9 1 256976 mdb
> 3 0 2063880 hda
> 3 1 133024 hda1
> 3 2 1 hda2
> 3 3 891072 hda3
> 3 5 512032 hda5
> 3 6 18112 hda6
> 3 7 66496 hda7
> 3 8 133024 hda8
> 3 9 308416 hda9
> charmed:/proc> cat pci
> PCI devices found:
> Bus 0, device 0, function 0:
> Host bridge: Intel 82439HX Triton II (rev 1).
> Medium devsel. Master Capable. Latency=32.
> Bus 0, device 7, function 0:
> ISA bridge: Intel 82371SB PIIX3 ISA (rev 1).
> Medium devsel. Fast back-to-back capable. Master Capable. No
> bursts.
> Bus 0, device 7, function 1:
> IDE interface: Intel 82371SB PIIX3 IDE (rev 0).
> Medium devsel. Fast back-to-back capable. Master Capable.
> Latency=32.
> I/O at 0x9000 [0x9001].
> Bus 0, device 13, function 0:
> SCSI storage controller: Adaptec AIC-7881U (rev 0).
> Medium devsel. Fast back-to-back capable. IRQ b. Master
> Capable. Latency=32. Min Gnt=8.Max Lat=8.
> I/O at 0x6000 [0x6001].
> Non-prefetchable 32 bit memory at 0xe1000000 [0xe1000000].
> Bus 0, device 15, function 0:
> VGA compatible controller: ATI Mach64 VT (rev 72).
> Medium devsel. Fast back-to-back capable.
> Non-prefetchable 32 bit memory at 0xe0000000 [0xe0000000].
> I/O at 0x6100 [0x6101].
> charmed:/proc> cat slabinfo
> slabinfo - version: 1.0
> kmem_cache 28 42
> tcp_tw_bucket 0 0
> tcp_bind_bucket 49 127
> tcp_open_request 0 0
> skbuff_head_cache 4 84
> sock 149 160
> dquot 0 0
> filp 1844 1848
> signal_queue 0 0
> buffer_head 6168 6762
> mm_struct 82 93
> vm_area_struct 1996 2205
> dentry_cache 704 2666
> files_cache 81 98
> uid_cache 9 127
> size-131072 0 0
> size-65536 0 0
> size-32768 0 0
> size-16384 1 1
> size-8192 2 4
> size-4096 15 44
> size-2048 88 96
> size-1024 10 24
> size-512 48 64
> size-256 19 56
> size-128 376 450
> size-64 116 168
> size-32 376 756
> slab_cache 62 126
> charmed:/proc> cat stat
> cpu 1012617 1967006 280733 9988669
> cpu0 1012617 1967006 280733 9988669
> disk 189696 57406 0 0
> disk_rio 125676 32821 0 0
> disk_wio 64020 24585 0 0
> disk_rblk 270768 75002 0 0
> disk_wblk 142716 56934 0 0
> page 372773 301809
> swap 4778 10521
> intr 14834642 13249025 14279 0 173 74261 1244686 6 0 0 0 0 95841 15 1
> 156355 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> ctxt 57180614
> btime 910913553
> processes 26480
> charmed:/proc> cat swaps
> Filename Type Size Used Priority
>
> /dev/sdb2 partition 72288 9680 5
> /dev/hda1 partition 130748 9524 5
> /dev/sda5 partition 130748 9484 5
> charmed:/proc> cat uptime
> 132497.22 0.00
> charmed:/proc> cat version
> Linux version 2.1.127 (denty@charmed) (gcc version 2.7.2.3) #1 SMP Thu
> Nov 12 20:47:33 GMT 1998
>
> --
> Denty. http://www.charmed.demon.co.uk/
> New Media, PA NewsCentre, LEEDS, UK.
>
> ``Meanwhile, atheists will smile and wait for the day when
> religious apocalyptic visions...are put to rest with a
> medical cure.''

--
Denty.                        http://www.charmed.demon.co.uk/
New Media, PA NewsCentre, LEEDS, UK.


``Meanwhile,  atheists will smile  and wait for  the day when
religious  apocalyptic  visions...are  put  to  rest  with  a
medical cure.''




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