On Wed, 2003-05-21 at 19:19, Nivedita Singhvi wrote:
> >>I think this is what I've seen a few times when using distcc.
> >
> > Does anyone know if the other hangs are seen when the app is using
> > TCP_CORK (like distcc does) ?
>
> We had observed some hangs during SpecWeb99 benchmark runs.
> Unfortunately, we managed to burn down the machine and have
> yet to rerun the benchmark. No other workload seems to
> be observing them.
>
> I'm trying to excavate the one incomplete trace I had of
> that hang, if possible. IIRC it was using sendfile(), so
> probably also using TCP_CORK, though dont know that for
> sure.
>
> Can anyone tell me what to do to reproduce this?
I've now tried my distcc stuff again. With TCP_CORK enabled I don't have
any problem reproducing the hangs, 1 in 3 shows at least one hang. But
so far I havn't been able to reproduce it with TCP_CORK disabled. I'll
keep compiling a few more times, I've only run 10 compilations so far.
When using distcc you know you have a hang when it stops at the
object-linking for a while waiting for one process to finish.
--
/Martin
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