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[Bug 16348] kswapd continuously active when doing IO

To: xfs-masters@xxxxxxxxxxx
Subject: [Bug 16348] kswapd continuously active when doing IO
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Tue, 13 Jul 2010 06:55:39 GMT
Auto-submitted: auto-generated
In-reply-to: <bug-16348-470@xxxxxxxxxxxxxxxxxxxxxxxxx/>
References: <bug-16348-470@xxxxxxxxxxxxxxxxxxxxxxxxx/>
https://bugzilla.kernel.org/show_bug.cgi?id=16348





--- Comment #10 from wwwutz@xxxxxxxxxxxxx <wwwutz@xxxxxxxxxxxxx>  2010-07-13 
06:55:37 ---

Aborting the I/O heavy programs (plain perl open read write close) almost
immediatly drops the kswapds. xfs_inode slabs stay.


top - 08:51:51 up 22:08,  4 users,  load average: 1.66, 2.89, 2.07
Tasks: 268 total,   1 running, 267 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.2%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:  33077232k total, 32953756k used,   123476k free,   227432k buffers
Swap: 65537160k total,        0k used, 65537160k free, 27218944k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND            
 6264 root      20   0  4244 1136  736 S    6  0.0   0:50.91 slabtop            
    1 root      20   0  1624  480  408 S    0  0.0   0:01.26 init               
    2 root      20   0     0    0    0 S    0  0.0   0:00.00 kthreadd           
    3 root      RT   0     0    0    0 S    0  0.0   0:00.05 migration/0        
    4 root      20   0     0    0    0 S    0  0.0   0:01.67 ksoftirqd/0        
    5 root      RT   0     0    0    0 S    0  0.0   0:00.03 migration/1        
    6 root      20   0     0    0    0 S    0  0.0   0:01.98 ksoftirqd/1        
 Active / Total Objects (% used)    : 13291713 / 15368731 (86.5%)
 Active / Total Slabs (% used)      : 1335299 / 1335324 (100.0%)
 Active / Total Caches (% used)     : 101 / 223 (45.3%)
 Active / Total Size (% used)       : 4884030.56K / 5242406.91K (93.2%)
 Minimum / Average / Maximum Object : 0.02K / 0.34K / 4096.00K

  OBJS ACTIVE  USE OBJ SIZE  SLABS OBJ/SLAB CACHE SIZE NAME                   
4678877 3458608  73%    0.06K  79303       59    317212K size-64
3786780 3657252  96%    1.00K 946695        4   3786780K xfs_inode
3256703 3254908  99%    0.10K  88019       37    352076K buffer_head
3253440 2593056  79%    0.19K 162672       20    650688K dentry
252147 206842  82%    0.54K  36021        7    144084K radix_tree_node
 43960  42829  97%    0.70K   8792        5     35168K reiser_inode_cache
 21630  18137  83%    0.12K    721       30      2884K size-128
 13621  13444  98%    0.07K    257       53      1028K sysfs_dir_cache
 10528   9094  86%    0.03K     94      112       376K size-32
  8686   8686 100%    4.00K   8686        1     34744K size-4096
  5760   3184  55%    0.19K    288       20      1152K size-192
  3108   2053  66%    0.18K    148       21       592K xfs_ili

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