Cygwin1.dll problem with Hyperthreaded machines.
David Chatterton
chatz@melbourne.sgi.com
Mon Aug 30 21:55:00 GMT 2004
Chuck,
We have a build environment for a reasonably large piece of code
that several people could be building at the same time. On a dual
800MHz P3 and even a quad 550MHz box we had no problems, but upgrading
to a dual 1.8GHz AMD box improved build times dramatically but
the vast majority of builds fail with:
- Microsoft's compiler reporting missing source file. I suspect
the environment and/or current working directory is not
setup correctly everytime a prcess is created. Rerun make and
it works. Very strange.
- Thread activation errors which kill the build and the running
shell.
rsync is also unreliable as it regularly hangs, but its unclear if
that is related.
I will also investigate providing a box, but that might be the
easy part. Providing a test case that does not rely on our code
base might be more of a challenge.
David
Chuck McDevitt wrote:
> Here at the company I work for, we have one of our developers spending
> half his time trying to track down this problem, but so far with no luck.
> He did find that forcing processor affinity helps avoid the problem, but
> that's not much of a solution.
>
> I keep trying to convince management to send a hyperthreaded machine that
> shows the problem to Christopher or Corinna, but they keep nixing the idea
> (I don't understand why).
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