Re: Swap space not used

[Rick Thomas <Rick.Thomas@pobox.com>]

On Fri, 4 May 2012 02:40:16 +0800 (WST), Bret Busby wrote:
> free:
>
> "
> :~# free
>              total       used       free     shared    buffers cached
> Mem:       8059964    7746808     313156          0      54708 
> 1352976
> -/+ buffers/cache:    6339124    1720840
> Swap:     42860340      66296   42794044
> "
> A snaphot of the header of top gives
>
> "
> :~# top
>
> top - 02:31:37 up 3 days, 44 min,  3 users,  load average: 0.09, 
> 0.17, 0.16
> Tasks: 205 total,   2 running, 203 sleeping,   0 stopped,   0 zombie
> Cpu(s): 24.3%us,  2.6%sy,  0.0%ni, 73.1%id,  0.0%wa,  0.0%hi,  
> 0.0%si, 0.0%st
> Mem:   8059964k total,  7722984k used,   336980k free,    55484k 
> buffers
> Swap: 42860340k total,    66296k used, 42794044k free,  1353544k 
> cached
>
> "

Well.

According to the above:
You do, indeed, have 40GB of swap configured.
It appears to be using 66MB of that swap.

So swapping is not disabled, and you have plenty of swap space for any 
normal use.

The remaining question is, why do you periodically run out of memory 
and crash?  Or, put another way, what abnormal use is occurring to cause 
your crashes?

Are there any indications in syslog of what may be going on immediately 
before the crash?

Rick