Re: [Xen-users] dom0 freezes under high IO load - HP ML150 G2

["Ulrich Windl" <ulrich.windl@xxxxxxxxxxxxxxxxxxxx>]

On 2 Mar 2007 at 19:24, Tom Mornini wrote:

> Hello Daniel.
> 
> We've had similar problems, but have received very little feedback  
> from our machines.
> 
> Our setup is also not entirely similar to yours. :-)
> 
> Could you try something out?
> 
> Set a cron job to run every 1 minute:
> 
>    cat /proc/slabinfo >> /root/slabinfo.txt

BTW: do you know slabtop?:

 Active / Total Objects (% used)    : 155588 / 295868 (52.6%)
 Active / Total Slabs (% used)      : 28469 / 28498 (99.9%)
 Active / Total Caches (% used)     : 89 / 128 (69.5%)
 Active / Total Size (% used)       : 56779.98K / 105070.07K (54.0%)
 Minimum / Average / Maximum Object : 0.02K / 0.35K / 128.00K

  OBJS ACTIVE  USE OBJ SIZE  SLABS OBJ/SLAB CACHE SIZE NAME
 94170  23806  25%    0.25K   6278       15     25112K dentry_cache
 46880  30443  64%    0.09K   1172       40      4688K buffer_head
 44556  26860  60%    0.88K  11139        4     44556K ext3_inode_cache
 17175   6633  38%    0.75K   3435        5     13740K reiser_inode_cache
 15323   7591  49%    0.52K   2189        7      8756K radix_tree_node
 12992  12940  99%    0.03K    116      112       464K dm_io
 12960  12885  99%    0.02K     90      144       360K dm_tio
  9632   1706  17%    0.03K     86      112       344K size-32
  8445   6939  82%    0.25K    563       15      2252K size-256
  6728   3705  55%    0.06K    116       58       464K size-64
  4530   3598  79%    0.12K    151       30       604K size-128
  4158   3619  87%    0.17K    189       22       756K vm_area_struct
  2676   2676 100%    0.62K    446        6      1784K inode_cache
  1605   1326  82%    0.25K    107       15       428K filp
  1584    819  51%    0.02K     11      144        44K anon_vma
  1520   1489  97%    0.38K    152       10       608K ip_dst_cache

Ulrich


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