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 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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>
>   
To isolate a hardware problem I'd swap out components, as you did with 
the SATA drives. Try swapping out the RAM, or adding more.

Steve

-- 
Stephen B. Browne
[email protected]
"Ubi bene, ibi patria."

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