[CentOS] Centos 6.3: load average strangeness

Dario Lesca d.lesca at solinos.it
Thu Jan 17 11:17:22 UTC 2013


Hi, on my c6.3 server (guest of a vmware host) I have a strange load
average value:

w command:
> [root at s-doc ~]# w
>  11:19:23 up 41 days, 23:15,  1 user,  load average: 4,03, 4,03, 4,00
> USER     TTY      FROM              LOGIN@   IDLE   JCPU   PCPU WHAT
> root     pts/2    dodo:S.0         11:15    0.00s  0.02s  0.00s w

top command:

> top - 12:13:31 up 42 days, 9 min,  1 user,  load average: 4.00, 4.01, 4.00
> Tasks: 127 total,   1 running, 126 sleeping,   0 stopped,   0 zombie
> Cpu(s):  0.0%us,  0.0%sy,  0.0%ni, 99.3%id,  0.7%wa,  0.0%hi,  0.0%si,  0.0%st
> Mem:   1914596k total,  1783108k used,   131488k free,    86536k buffers
> Swap:  2047992k total,    18884k used,  2029108k free,   246504k cached
> 
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                           
>   863 root      20   0     0    0    0 D  0.3  0.0  26:05.07 xfsaild/dm-5                                                           1 root      20   0 21452 1032  780 S  0.0  0.1   0:01.76 init                                                                   2 root      20   0     0    0    0 S  0.0  0.0   0:00.53 kthreadd                                                               3 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0                                                            4 root      20   0     0    0    0 S  0.0  0.0   0:06.32 ksoftirqd/0                                                        
>     5 root      RT   0     0    0    0 S  0.0  0.0   0:00.00 migration/0                                                            6 root      RT   0     0    0    0 S  0.0  0.0   0:05.66 watchdog/0                                                             7 root      20   0     0    0    0 S  0.0  0.0  27:33.90 events/0                                                               8 root      20   0     0    0    0 S  0.0  0.0   0:00.00 cgroup                                                             
>     9 root      20   0     0    0    0 S  0.0  0.0   0:00.00 khelper                                                               10 root      20   0     0    0    0 S  0.0  0.0   0:00.00 netns                                                                 11 root      20   0     0    0    0 S  0.0  0.0   0:00.00 async/mgr                                                             12 root      20   0     0    0    0 S  0.0  0.0   0:00.00 pm                                                                    13 root      20   0     0    0    0 S  0.0  0.0   0:13.75 sync_supers                                                        
>    14 root      20   0     0    0    0 S  0.0  0.0   0:12.35 bdi-default                                            

But none of process still work, top have no process > 0,xx and also
iotop value are > 0,xx.

This is the vmstat output:

> [root at s-doc ~]# vmstat 2 10
> procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
>  0  0  18884 131984  86508 246500    0    0     2    10    9    9  1  0 99  0  0
>  0  0  18884 131976  86508 246500    0    0     0     6  126  542  0  0 99  1  0
>  0  0  18884 131976  86508 246500    0    0     0     0  126  546  0  0 100  0  0
>  0  0  18884 131976  86508 246500    0    0     0     0  123  539  0  0 100  0  0
>  0  0  18884 131976  86508 246500    0    0     0     0  122  538  0  0 100  0  0
>  0  0  18884 131976  86508 246500    0    0     0     0  127  538  0  0 100  0  0
>  0  0  18884 131844  86508 246500    0    0     0     2  166  535  5  1 95  0  0
>  4  0  18884 131844  86508 246500    0    0     0    20  122  532  0  0 100  0  0
>  0  0  18884 131844  86508 246500    0    0     0     0  124  538  0  0 100  0  0
>  0  0  18884 131844  86512 246500    0    0     0    12  123  539  0  0 98  2  0
> 

There is some method to find out what it is that causes the load average
>4.0 ?

Many thanks for your reply.

-- 
Dario Lesca - sip:dario at solinos.it
(Inviato dal mio Linux Fedora 17 Gnome3)




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