Messages in this thread | | | From | "Madan A S" <> | Subject | mem=32 Kernel Panic , Physical check 32Mb, takes 24 mb | Date | Fri, 4 Aug 2000 18:44:43 +0530 |
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I have Redhat 6.2 The Following is the normal output i get to see on my screen: ------------------------------------------------------------------------ Linux version 2.2.14-12 (root@porky.devel.redhat.com) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Tue Apr 25 13:04:07 EDT 2000 Detected 400910451 Hz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 399.77 BogoMIPS Memory: 22356k/24512k available (1068k kernel code, 412k reserved, 612k data, 64k init, 0k bigmem) Dentry hash table entries: 262144 (order 9, 2048k) Buffer cache hash table entries: 32768 (order 5, 128k) Page cache hash table entries: 8192 (order 3, 32k) VFS: Diskquotas version dquot_6.4.0 initialized CPU: Intel Celeron (Mendocino) stepping 05 Checking 386/387 coupling... OK, FPU using exception 16 error reporting. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX mtrr: v1.35a (19990819) Richard Gooch (rgooch@atnf.csiro.au) PCI: PCI BIOS revision 2.10 entry at 0xfb300 PCI: Using configuration type 1 PCI: Probing PCI hardware Linux NET4.0 for Linux 2.2 Based upon Swansea University Computer Society NET3.039 NET4: Unix domain sockets 1.0 for Linux NET4.0. NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP TCP: Hash tables configured (ehash 32768 bhash 32768) Initializing RT netlink socket Starting kswapd v 1.5 Detected PS/2 Mouse Port. Serial driver version 4.27 with MANY_PORTS MULTIPORT SHARE_IRQ enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A pty: 256 Unix98 ptys configured apm: BIOS version 1.2 Flags 0x07 (Driver version 1.9) Real Time Clock Driver v1.09 RAM disk driver initialized: 16 RAM disks of 4096K size SIS5513: IDE controller on PCI bus 00 dev 01 SIS5513: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x4000-0x4007, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0x4008-0x400f, BIOS settings: hdc:DMA, hdd:DMA hda: ST36421A, ATA DISK drive hdd: Philips 40X PCA403CD, ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 hda: ST36421A, 6150MB w/256kB Cache, CHS=784/255/63 hdd: ATAPI 48X CD-ROM drive, 128kB Cache Uniform CDROM driver Revision: 2.56 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12 raid5: measuring checksumming speed raid5: MMX detected, trying high-speed MMX checksum routines pII_mmx : 891.540 MB/sec p5_mmx : 936.498 MB/sec 8regs : 688.467 MB/sec 32regs : 385.953 MB/sec using fastest function: p5_mmx (936.498 MB/sec) scsi : 0 hosts. scsi : detected total. md.c: sizeof(mdp_super_t) = 4096 Partition check: hda: hda1 hda2 < hda5 hda6 > hda3 hda4 autodetecting RAID arrays autorun ... ... autorun DONE. VFS: Mounted root (ext2 filesystem) readonly. Freeing unused kernel memory: 64k freed Adding Swap: 72252k swap-space (priority -1) cm: version v1.1 time 13:05:42 Apr 25 2000 cm: found CM8738 adapter at io 0xe000 irq 10 --------------------------------------------- The PROBLEM :
[root@Madan]$cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 22892544 22360064 532480 13049856 618496 13893632 Swap: 73986048 2600960 71385088 MemTotal: 22356 kB MemFree: 520 kB MemShared: 12744 kB Buffers: 604 kB Cached: 13568 kB BigTotal: 0 kB BigFree: 0 kB SwapTotal: 72252 kB SwapFree: 69712 kB
This the output of cat /proc/memento in my Linux system The imp point over here is that Mem:22892544 but when I boot the initial memcheck counts untill 32768K
This is when i tried giving mem=32m I had manually copy this below , is there any other way --------------------------------------------- Linux version 2.2.14-12 (root@porky.devel.redhat.com) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Tue Apr 25 13:04:07 EDT 2000 Detected 400910451 Hz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 399.77 BogoMIPS Memory: 30532k/32768k available (1068k kernel code, 412k reserved, 612k data, 64k init, 0k bigmem) General Protection Fault : 0000 CPU : 0 EIP : 0010 : [<c01210cf>] EFLAGS : 00010286 eax : 0000009f ebx : c1fff0d8 ecx : ffffffff edx : c02cb000 esi : 00000028 edi : ffffffff ebp : c1ffffe0 esp : c0235f40 ds : 0018 es : 0018 ss : 0018 Process Swapper(PID : 0 , Process nr : 0 , StackPage = c023500) Stack : c0210640 00000282 ffffffff 00000212 00000001 00000015 00000020 00000000 c01212cb c021a6640 000000015 00000000 00000020 00000000 0000000 c012092c c021a640 00000012 00000000 00098800 00000000 00000000 c0239c14 c01dff20 Call Trace : [<c01212cd>][<c012092c>][<c01dff20>][<c01e199e>][<c0106000>][<c0106000>][<c0 100175>] Code : 89 07 8b 4c 24 10 8b 09 89 4c 24 10 83 ee 01 73 b8 c7 01 00 Kernel Panic : Attempted to kill the idle task! In Swapper Task - not syncing
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>hda2 isn't using space: it's probably just an "extended" partition, >since you can only have 4 primary partitions. Its not a question of stinginess of losing 1Mb of ~10GB I just wanted to know why is that . It all occurred when i repartitioned my disk few weeks ago . Anyway i found the ans , hda2 is "eating" 1K, not 1M
I am just mailing the other ans that i received I believe they also substantiate your reply from ray@comarre.com Second, it is surely an extended partition, sort of a "wrapper" that in turn holds the partition table for hda5 and hda6. IDE drives can have only 4 "real" partitions. They can be 4 primary partitions or 3 primary and 1 extended partition. In the second case, the extended can hold any number (or at least some large number) of additional "logical" partitions. from ashak@eth.net There is in fact no memory wastage What you see is the extended partition (hda2) =1Mb hda1 is the primary partition (say 4024251 Mb) The extended partition only contains partition information of all the logical partition it contains ie D, E This is the 3rd partition = 128520 hda3 This is the swap partition=1646662 hda4 425691 hda5 72261 hda6 are the logical partitions in hda2 Partition magic does not show hda2 as it is only an abstraction and does not contain any data itself
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