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 <tvrtko.ursulin@xxxxxxxxx> > >> > >> 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 > >> inability of the chip to cope. > > > > Doesn't seem to be required. And the machines most susceptible to timer > > errors due to busyspin have not show the issue. > > With the memory pressure subtest, the second patch in this series, it > was make it or break it to have the nops. Without them it was GPU hangs > all around, and with them so far all clean. First machine bsw, just applying patch 2/2, IGT-Version: 1.23-gb6b8d829 (x86_64) (Linux: 4.20.0-rc2+ x86_64) Using Execlists submission Ring size: 131 batches Starting subtest: wide-all wide: 420 cycles: 24121.034us Subtest wide-all: SUCCESS (47.060s) Starting subtest: wide-contexts wide: 340 cycles: 24893.896us Subtest wide-contexts: SUCCESS (22.265s) Starting subtest: wide-contexts-mempressure wide: 232 cycles: 25153.899us Subtest wide-contexts-mempressure: SUCCESS (23.141s) :| -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
