fc3t2 - a hard lockup of system during use

Andy Green fedora at warmcat.com
Wed Sep 29 17:05:08 UTC 2004


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On Wednesday 29 September 2004 17:07, Alan Cox wrote:
> On Wed, Sep 29, 2004 at 02:55:25PM +0100, Andy Green wrote:
> > > Just had a hard lockup of system during use (desktop), the hdd kept
> > > trashing. ctrl+alt+backspace had to effect, nor switching to console.
> > > There's nothing about this in /var/log/messages or Xorg.log.
> >
> > What's your CPU?  Not a Via C3 by any chance?
>
> One of my Athlon64 test sets does similar sounding things - it suddenely
> runs out of memory and dies. From the bits I got beforehand it looks like
> yum blew up in my case

Hi Alan -

Recent kernels, and a vanilla 2.6.8.1 from kernel.org compiled with the 
development tree compiler, both don't last very long on my Via C3 box.  It's 
definitely NOT hardware or heat, since the same board physically untouched 
runs for months solid on 2.6.7-1.437, right now a 5 day uptime since the last 
time I tried one of these more recent kernels.  Symptoms are frozen solid.

256MB on the thing.  I was running slabtop on it last time it died, looking 
for why a driver was not able to allocate ~40K of dmabale memory, here is 
what was left unscrolled.

Active / Total Caches (% used)     : 70 / 107 (65.4%)
 Active / Total Size (% used)       : 11706.26K / 15409.12K (76.0%)
 Minimum / Average / Maximum Object : 0.01K / 0.23K / 128.00K

  OBJS ACTIVE  USE OBJ SIZE  SLABS OBJ/SLAB CACHE SIZE NAME
 20100  16429  81%    0.05K    268       75      1072K buffer_head
 10258   5189  50%    0.16K    446       23      1784K dentry_cache
  6265   3866  61%    0.68K   1253        5      5012K ext3_inode_cache
  4089   3857  94%    0.08K     87       47       348K vm_area_struct
  3808   2985  78%    0.03K     32      119       128K size-32
  3612   2361  65%    0.27K    258       14      1032K radix_tree_node
  1680   1630  97%    0.19K     84       20       336K filp
  1611   1577  97%    0.43K    179        9       716K inode_cache
  1309   1166  89%    0.03K     11      119        44K anon_vma
  1159   1158  99%    0.06K     19       61        76K size-64
  1147   1072  93%    0.12K     37       31       148K size-128
   720    540  75%    0.25K     48       15       192K ip_dst_cache
   678    332  48%    0.02K      3      226        12K biovec-1
   600    594  99%    0.44K     75        8       300K proc_inode_cache
   532    503  94%    0.50K     76        7       304K sock_inode_cache
   492    372  75%    0.09K     12       41        48K bio
   480    201  41%    0.50K     60        8       240K size-512
   452    115  25%    0.02K      2      226         8K tcp_bind_bucket
   440    180  40%    0.19K     22       20        88K skbuff_head_cache
   387    326  84%    0.41K     43        9       172K ip_conntrack
   360    169  46%    0.25K     24       15        96K size-256
   324    183  56%    0.05K      4       81        16K journal_head
   305    258  84%    0.06K      5       61        20K biovec-4
   294    279  94%    1.22K     98        3       392K tcp_sock
   290      2   0%    0.01K      1      290         4K revoke_table
   280    280 100%    0.19K     14       20        56K biovec-16
   260    258  99%    0.75K     52        5       208K biovec-64
   260    256  98%    1.50K     52        5       416K biovec-128
   256    256 100%    3.00K    128        2      1024K biovec-(256)
   252    247  98%    0.54K     36        7       144K shmem_inode_cache
   238     62  26%    0.03K      2      119         8K fs_cache
   226      1   0%    0.02K      1      226         4K fasync_cache
   226     10   4%    0.02K      1      226         4K ip_fib_hash
   225    151  67%    1.44K     45        5       360K task_struct
   217    205  94%    0.56K     31        7       124K unix_sock
   192    192 100%    4.00K    192        1       768K size-4096
   192    108  56%    0.04K      2       96         8K crq_pool
   186    143  76%    0.12K      6       31        24K signal_cache
   185     88  47%    0.02K      1      185         4K blkdev_ioc
   185     60  32%    0.02K      1      185         4K dnotify_cache
   168    157  93%    1.00K     42        4       168K size-1024
   156    148  94%    2.00K     78        2       312K size-2048
   150     90  60%    0.16K      6       25        24K blkdev_requests
   135     16  11%    0.03K      1      135         4K journal_handle
   125    125 100%    0.16K      5       25        20K kmem_cache
   119    119 100%    0.03K      1      119         4K cfq_pool
    90     63  70%    0.44K     10        9        40K files_cache
    90     63  70%    0.81K     10        9        80K mm_struct
    87     63  72%    0.13K      3       29        12K idr_layer_cache
    81     73  90%    1.28K     27        3       108K sighand_cache
    63     63 100%    4.00K     63        1       252K pgd

- -Andy

- -- 
http://www.addintelligence.co.uk -- we design custom hardware and software for 
your products 
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