MemoryError c/vcompiler.h:745: Fatal Python error (Psycopg2)

Lie Ryan lie.1296 at
Sun Jun 21 09:04:59 EDT 2009

Luis P. Mendes wrote:
> Hi,
> I have a program that uses a lot of resources: memory and cpu but it 
> never returned this error before with other loads:
> """
> MemoryError
> c/vcompiler.h:745: Fatal Python error: psyco cannot recover from the 
> error above
> Aborted
> """ 
> The last time I checked physical RAM while the script was running, it was 
> used in about 75% and there is no reason (based in other runs of the 
> program) for it to surpass 80% (maximum).
> $ python -V
> Python 2.5.2
> Pyscopg2 is version 2.0.8
> I use Linux, Kernel #2 SMP
> with a Core2 CPU T5500  @ 1.66GHz and 3GB of RAM
> I could not find this error.  What does this mean?
> Is this a bug of Python? of Psycopg2?
> Luis

Have you tried running without psyco? Psyco increases memory usage quite

If it runs well without psyco, you can try looking at your code and
selectively psyco parts that need the speed boost the most.

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