[Pixman] [PATCH 0/9] lowlevel-blt-bench improvements for automated testing

Pekka Paalanen ppaalanen at gmail.com
Mon Jul 6 02:52:15 PDT 2015

On Thu, 02 Jul 2015 17:45:13 +0100
"Ben Avison" <bavison at riscosopen.org> wrote:

> On Wed, 10 Jun 2015 14:32:49 +0100, Pekka Paalanen <ppaalanen at gmail.com> wrote:
> > most of the patches are trivial cleanups. The meat are the last two:
> > CSV output mode and skipping the memory speed benchmark.
> >
> > Both new features are designed for an external benchmarking harness,
> > that runs several different versions of Pixman with lowlevel-blt-bench
> > in an alternating fashion. Alternating iterations are needed to get
> > reliable results on platforms like the Raspberry Pi.
> These look like sensible improvements to me. A few minor points:
> Patch 2 commit message:
> > Move explanation printing to a new file. This will help with
>                                        ^^^^ function


> Patch 8: if the aim is machine readability, I'd suggest no space after
> the comma. Otherwise if comma is used as a field separator, the first
> field has no leading space but all the others do, which may make things a
> little more fiddly when post-processing the results with some tools.


> Not really your fault, but I noticed it when trying out the new versions:
> it doesn't fault an attempt to list more than one pattern on the command
> line. It just acts on the last one. It should really either fault it, or
> (more usefully) benchmark all of the patterns specified. This would allow
> a subset of the "all" tests to be performed, sharing the same memcpy
> measurement overhead, or a group of operations including those not in the
> "all" list.

I will make a follow-up that at least refuses to run with extra arguments.

The runner script I am using would not be able to use multiple patterns
on a single execution, and it would just need to split the output
anyway. In a multi-pattern case, it would also be useful to record the
pattern too, so that would be another type of CSV output for different
scripts to parse.

> In other respects, happy to give my Reviewed-by:.

Cool, and since no other comments in a month,
   2be523b..e2d211a  master -> master


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