On Mon, 13 Jul 2009, Aleksey Tsalolikhin wrote:

> I had a production Linux server freeze today, we had
> to power cycle it to get the service up.

I agree with David that it looks like the box was swapping badly before 
the end.  You may like to look in the logs to see if the out of memory 
killer woke up.

Linux has supported per process accounting for eons.  I'd recommend 
enabling it so you will have good info if this ever occurs again.  With 
per process acounting you can go back and see what commands were started 
when and how much they were paging (lastcomm -p).

I also recommend enabling sar which gives useful systemwide performance 
stats.

Cheers,

Rob

-- 
I tried to change the world but they had a no-return policy
Projected IPv4 exhaustion: http://www.potaroo.net/tools/ipv4/index.html
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