Re: build farm machine using <make -j 8> mixed results

Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> On 09/09/2012 03:29 AM, Tom Lane wrote:
>> Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
>>> On Sat, 2012-09-08 at 19:54 -0400, Tom Lane wrote:
>>>> Anyway, what I notice is that I get different types of failures, but
>>>> they are all under ecpg/. What I think we need to do is insert
>>>> .NOTPARALLEL in ecpg/Makefile,

>>> I'd hate that, because the ecpg build is one of the slowest parts of the
>>> build, so de-parallelizing it would slow down everything quite a bit.

>> There's only one bit of it that's slow, which is the bison build +
>> preproc.c compile, which is necessarily serial anyway. So I think
>> trying to avoid .NOTPARALLEL there is a complete waste of effort.
>> But if you wanna fix it some other way, step right up.

> Yeah. I am going to add a config parameter to the buildfarm to allow
> parallelism for the "make" and "make contrib" stages, but I'm not going
> to release it until this is fixed.

Well, why don't we stick .NOTPARALLEL in there for the moment, and then
if Peter thinks of a better solution, he can revert that change in favor
of something cleaner.

I assume we need this for all active branches, if the buildfarm is
going to be stressing it?

regards, tom lane