Re: [Monotone-devel] Parallel test execution (Was: Re: [Monotone-debian] Bug#623734: monotone: FTBFS: test suite timeout)

[Francis Russell]

Thomas Keller wrote:
> Am 27.04.2011 10:19, schrieb Stephen Leake:
>> Since it only happens with -jn, this is pretty clearly a bug in make.
>> While we could try to find a work-around, I don't see the point.
> 
> Lets have a look at our own sources at first. The job server code is in
> test/src/unix/tester-plaf.cc, Tim probably has the best expertise in
> this area since Zack, who originally wrote most of the code, vanished.

If you could have a look at the indefero bug report, I determined that
it was possible to trigger this bug using just make, and it was
unrelated to the test suite.

I'm a little less sure that the fact it only occurs with -jn indicates a
bug in make though. In particular, I was uncertain if the the use of
.PHONY for real targets might behave problematically in the parallel case.

Francis