From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
To: Chris Wilson <chris@chris-wilson.co.uk>, igt-dev@lists.freedesktop.org
Cc: Intel-gfx@lists.freedesktop.org,
Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Subject: Re: [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner
Date: Mon, 19 Nov 2018 15:33:56 +0000 [thread overview]
Message-ID: <a87ae2ca-ae98-dfa7-772c-850f1d239e54@linux.intel.com> (raw)
In-Reply-To: <154264132680.24263.9318806032542512579@skylake-alporthouse-com>
On 19/11/2018 15:28, Chris Wilson wrote:
> Quoting Tvrtko Ursulin (2018-11-19 15:22:28)
>> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
>>
>> 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.
Regards,
Tvrtko
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next prev parent reply other threads:[~2018-11-19 15:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-19 15:22 [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner Tvrtko Ursulin
2018-11-19 15:22 ` [igt-dev] [PATCH i-g-t 2/2] tests/gem_exec_await: Add a memory pressure subtest Tvrtko Ursulin
2018-11-19 15:36 ` Chris Wilson
2018-11-19 15:54 ` Tvrtko Ursulin
2018-11-19 17:07 ` [Intel-gfx] " Chris Wilson
2018-11-19 15:28 ` [igt-dev] [PATCH i-g-t 1/2] tests/gem_exec_await: Relax the busy spinner Chris Wilson
2018-11-19 15:33 ` Tvrtko Ursulin [this message]
2018-11-19 16:18 ` Chris Wilson
2018-11-19 19:18 ` Tvrtko Ursulin
2018-11-19 19:34 ` Chris Wilson
2018-11-19 16:44 ` [igt-dev] ✓ Fi.CI.BAT: success for series starting with [i-g-t,1/2] " Patchwork
2018-11-19 21:52 ` [igt-dev] ✓ Fi.CI.IGT: " Patchwork
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