From: Tim Hunter <TimHunter@...>
Date: 2007-09-04T20:20:49+09:00
Subject: Re: RMagick: UnableToConcatenateString `

Jonathan Denni wrote:
> I have a program to generate my website <a
> href='bluebottleimages.org'>bluebottleimages.org</a>
>
> It creates thumbnails using Rmagick.  I run the program (on the server),
> and it goes for a while, but then I get
>
> RMagick: UnableToConcatenateString `
>   '.
> Warning: recursive semaphore lock detected!
>
> and it's stopped there.
>
> It has come up invariably at the same spot, so I thought it was
> corrupted image files, but even after replacing them I get the error
> message.  Now I'm thinking that it's probably just that I'm over-using
> server resources making all those thumbnails...   Do you think that's
> the case, or is it more likely that there's a problem with my program?
>
> If you like I can post my code.
>   

Try adding a periodic call to GC.start to your program. See this note: 
http://rubyforge.org/forum/forum.php?thread_id=1374&forum_id=1618

-- 
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