On 08/12/2010 05:01 PM, Mitesh Patel wrote:
> On 08/11/2010 07:19 PM, Robert Bradshaw wrote:
>> Thanks for looking into this, another data point is really helpful. I
>> put a vanilla Sage in hudson and for a while it was passing all of its
>> tests every time, then all of the sudden it started failing too. Very
>> strange... For now I've resorted to starting up Sage in a loop (as the
>> segfault always happened during startup) and am seeing about a 0.5%
>> failure rate (which is the same that I see with a vanilla Sage).
>> Hopefully we can get the parallel testing to work much more reliably
>> so we can use it as a good indicator in our Cython build farm to keep
>> people from breaking Sage (and I'm honestly really surprised we
>> haven't run into these issues during release management as well...)
> 
> Strange, indeed.
> 
> Could the startup segfault be distinct from and not present among the
> doctest faults?  Testing about 2500 files with a 0.5% startup failure
> rate would give us about 13 extra, random(?) faults per run, which we
> don't see.

Or should that be 0.05%?

Some more data:  I batch-tested 'sage -c "quit"' about 1.2e6 times with
vanilla 4.5.3.alpha1 on sage.math.  Each run ended with exit status 0
and no cores or discernible errors.

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