Running some tests with different segment sizes

Andres Freund <andres@anarazel.de> writes:

I'm working on merging the customizable segment size patch [1]. I'd
like to run some of the regression tests using it, to guarantee
non-standard settings have test coverage. The reason I'd like to adapt
an existing test, rather than add a new run of the standard regression
tests, is to avoid bloating the regression time unnecessarily.

Maybe there's a way to set up a buildfarm animal or two that run all
the tests with a different segsize?

regards, tom lane

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On 2017-09-19 14:05:44 -0400, Tom Lane wrote:

Andres Freund <andres@anarazel.de> writes:

I'm working on merging the customizable segment size patch [1]. I'd
like to run some of the regression tests using it, to guarantee
non-standard settings have test coverage. The reason I'd like to adapt
an existing test, rather than add a new run of the standard regression
tests, is to avoid bloating the regression time unnecessarily.

Maybe there's a way to set up a buildfarm animal or two that run all
the tests with a different segsize?

Hm, that'd work too. We could make initdb look at
getenv("PG_DEFAULT_SEGSIZE") or such? Otherwise it's probably not easy
to have all tests respect that.

I still would like to have at least one test that explicitly specifies a
different size so people can see if they outright break something, but
one would be enough if we had such an animal.

Greetings,

Andres Freund

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