[Mesa-dev] [PATCH 3/4] radeonsi: use multi-threaded compilation in debug contexts

Marek Olšák maraeo at gmail.com
Sat Jul 9 15:54:09 UTC 2016

On Fri, Jul 8, 2016 at 10:58 AM, Nicolai Hähnle <nhaehnle at gmail.com> wrote:
> On 07.07.2016 23:49, Marek Olšák wrote:
>> On Thu, Jul 7, 2016 at 9:39 AM, Nicolai Hähnle <nhaehnle at gmail.com> wrote:
>>> From: Nicolai Hähnle <nicolai.haehnle at amd.com>
>>> We only have to stay single-threaded when debug output must be
>>> synchronous.
>>> This yields better parallelism in shader-db runs for me.
>> shader-db should already get the CPU load to 100% for all cores. It
>> doesn't seem to possible to get better parallelism than that.
> I know, though for some reason it didn't always get it for me. I haven't
> bothered to look into it so far though.

Well, I know for sure that the in-memory shader cache had decreased
shader-db parallelism to 1-2 loaded cores because of the global mutex.
This fixed it:



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