Re: [Intel-gfx] [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner

2018-11-19 Thread Chris Wilson
Quoting Tvrtko Ursulin (2018-11-19 19:18:52) > > On 19/11/2018 16:18, Chris Wilson wrote: > > Quoting Tvrtko Ursulin (2018-11-19 15:33:56) > >> > >> On 19/11/2018 15:28, Chris Wilson wrote: > >>> Quoting Tvrtko Ursulin (2018-11-19 15:22:28) > From: Tvrtko Ursulin > > Add some nop i

Re: [Intel-gfx] [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner

2018-11-19 Thread Tvrtko Ursulin
On 19/11/2018 16:18, Chris Wilson wrote: Quoting Tvrtko Ursulin (2018-11-19 15:33:56) On 19/11/2018 15:28, Chris Wilson wrote: Quoting Tvrtko Ursulin (2018-11-19 15:22:28) From: Tvrtko Ursulin Add some nop instructions between recursive batch buffer start calls to give system some breathin

Re: [Intel-gfx] [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner

2018-11-19 Thread Chris Wilson
Quoting Tvrtko Ursulin (2018-11-19 15:33:56) > > On 19/11/2018 15:28, Chris Wilson wrote: > > Quoting Tvrtko Ursulin (2018-11-19 15:22:28) > >> From: Tvrtko Ursulin > >> > >> Add some nop instructions between recursive batch buffer start calls to > >> give system some breathing room. Without thes

Re: [Intel-gfx] [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner

2018-11-19 Thread Tvrtko Ursulin
On 19/11/2018 15:28, Chris Wilson wrote: Quoting Tvrtko Ursulin (2018-11-19 15:22:28) From: Tvrtko Ursulin Add some nop instructions between recursive batch buffer start calls to give system some breathing room. Without these, especially when coupled with memory pressure, false GPU hangs can

Re: [Intel-gfx] [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner

2018-11-19 Thread Chris Wilson
Quoting Tvrtko Ursulin (2018-11-19 15:22:28) > From: Tvrtko Ursulin > > Add some nop instructions between recursive batch buffer start calls to > give system some breathing room. Without these, especially when coupled > with memory pressure, false GPU hangs can be observed caused by the > inabili