Re: LINUX crash analysis

Aaron Birenboim wrote:
> I have a new Ubuntu 7.10 EMT64 install that is freezing under a 
> heavy-load application.
> 
> Does anybody out there know about a way to find out why it is freezing?
> Some sort of kernel profiler and/or debugger?
> 
> The "heavy load" is nothing more than a simple script with
> 4000 ImageMagick "convert" commands.... operating on
> 4000/12000 image files in a single folder.
> It usually freezes sometime between frame 500 to 2000 in the list.

I've run into "convert" threading out before, and I found that it was 
due to an old/incompatible version of one of the graphics libraries; 
IIRC, it was libtiff, but it could potentially be any of them that are 
associated with ImageMagick.

Hope this helps.


> 
> I was able to repeat the freeze on an ext3 filesystem, on two
> different SATA disks.  I then converted one of those disks to
> XFS, and was able to repeat the same freeze behavior.
> 
> As long as I don't try to process these files... the machine seems
> perfectly stable.
> 
> So...  I don't think it is SATA hardware.  (repeated on two disks)
> I don't think it is a filesystem bug. (repeated on two filesystems)
> Any other ideas?
> 
> ...  processing long lists of images into videos was one
> of the main reasons this machine was built...
> 
>              aaron
> 
> 
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