[Mongrel] Segmentation bug - file_column?

Vishnu Gopal g.vishnu at gmail.com
Thu Oct 19 13:33:30 EDT 2006


Monit is here: http://www.tildeslash.com/monit/ It's an external program you
can use for monitoring (and relaunching)  other processes as well. Search
this list for earlier examples on using monit with mongrel.

Vish

On 10/19/06, Cameron Booth <cameron at theworkinggroup.ca> wrote:
>
> On 19-Oct-06, at 3:11 AM, Zed A. Shaw wrote:
>
> Hi there everybody,
>
>
> We're having mongrel processes slowly die on us, with a segmentation
>
> fault. I've seen a few other people mention similar issues. Any info
>
> or suggestions would be nice:
>
>
> <snip>
>
>
> Do you think the problem is in file_column somewhere? The line it
>
> mentions is where it is calling ImageMagick:
>
>
> Looks like a bug in ImageMagick that's probably made worse by something
> Mongrel does (threads or IO possibly).  I'd suggest that if you can't keep
> it running solid then hook up a monit process on the mongrel machine(s) to
> keep them going.  There's a monit sample in the mongrel gem's source under
> examples you can use as a start.
>
>
> Thanks for the very quick response Zed. Setting up montoring makes perfect
> sense... I think I was so embedded in trying to figure things out it didn't
> cross my mind at all.
>
> However, here's my next question - maybe I'm just not understanding it
> properly, but I don't see the monit(or) script you mention in the /examples
> dir of the mongrel-0.3.13.4 gem. There is mongrel_simple_ctrl.rb and
> mongrel_simple_service.rb, but I'm not sure that those are what you meant.
>
> Can anybody point me in the right direction?
>
> And as other people have mentioned Zed....thanks so much for all the hard
> work you're putting into this!
>
> Cameron
>
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>
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