[Skiboot] [PATCH 1/6] core/test: run trace test last

Oliver oohall at gmail.com
Fri Jul 7 11:22:22 AEST 2017

On Wed, Jul 5, 2017 at 11:22 AM, Stewart Smith
<stewart at linux.vnet.ibm.com> wrote:
> Oliver O'Halloran <oohall at gmail.com> writes:
>> The trace test takes the longest to run and is among the least useful
>> of the tests. Run it last so we're not stuck waiting for it when
>> some other test is more interesting.
>> Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
>> ---
>>  core/test/Makefile.check | 6 ++++--
>>  1 file changed, 4 insertions(+), 2 deletions(-)
> Does this change really make a difference? You're running 'make check'
> with -j, right?

It makes a difference when running on my laptop. It looks like when
`nproc` is less than the number of dependencies of the make target it
still runs them in order. The trace test ties up a core for a while so
moving it to last still speeds things up a bit.

Besides, on a build box with a lot of threads it's sometimes nice to
run it with -j1 just so you don't have to sift through the scroll back
to locate errors.

> --
> Stewart Smith
> OPAL Architect, IBM.

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