[Bug 97939] New: [BYT] gem_fence_upload subtest thread-contention fails [regresion]

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Sep 26 18:35:24 UTC 2016 

https://bugs.freedesktop.org/show_bug.cgi?id=97939

            Bug ID: 97939
           Summary: [BYT] gem_fence_upload subtest thread-contention fails
                    [regresion]
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: luis.botello.ortega at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org
     i915 platform: BYT

Description
==========================================
gem_fence_upload subtest thread-contention is failing with the new versions

Good Commit
==========================================
commit bef9c1f4afe24cfff578d386bde349add65673eb
Author: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Date: Mon Sep 12 11:35:34 2016 +0300
drm-intel-nightly: 2016y-09m-12d-08h-35m-02s UTC integration manifest

Bad Commit
==========================================
commit 0e34cb5b35f0f837219495c402073141481b1b90
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Mon Sep 19 18:39:27 2016 +0300
drm-intel-nightly: 2016y-09m-19d-15h-38m-53s UTC integration manifest

IGT outpu
==========================================
IGT-Version: 1.16-g32b2021 (x86_64) (Linux: 4.8.0-rc8-nightly+ x86_64)
Contended upload rate for 1 linear threads:     183.031MiB/s
Contended upload rate for 1 tiled threads:      187.367MiB/s
Contended upload rate for 2 linear threads:     110.139MiB/s
Contended upload rate for 2 tiled threads:      110.597MiB/s
Contended upload rate for 4 linear threads:     113.170MiB/s
Contended upload rate for 4 tiled threads:      112.284MiB/s
Contended upload rate for 8 linear threads:     101.350MiB/s
Contended upload rate for 8 tiled threads:      113.155MiB/s
Contended upload rate for 16 linear threads:     77.813MiB/s
Contended upload rate for 16 tiled threads:      90.149MiB/s
Contended upload rate for 32 linear threads:     74.291MiB/s
Contended upload rate for 32 tiled threads:      60.614MiB/s
(gem_fence_upload:6234) CRITICAL: Test assertion failure function
thread_contention, file gem_fence_upload.c:331:
(gem_fence_upload:6234) CRITICAL: Failed assertion: linear[1] > 0.75 *
linear[0]
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [__real_main391+0xa80]
  #2 [main+0x29]
  #3 [__libc_start_main+0xf0]
  #4 [_start+0x29]
  #5 [<unknown>+0x29]
Subtest thread-contention failed.
**** DEBUG ****
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed: !(fd<0)
(gem_fence_upload:6234) DEBUG: Test requirement passed: num_fences > 0
(gem_fence_upload:6234) INFO: Contended upload rate for 1 linear threads:      
183.031MiB/s
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) INFO: Contended upload rate for 1 tiled threads:       
187.367MiB/s
(gem_fence_upload:6234) INFO: Contended upload rate for 2 linear threads:      
110.139MiB/s
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) INFO: Contended upload rate for 2 tiled threads:       
110.597MiB/s
(gem_fence_upload:6234) INFO: Contended upload rate for 4 linear threads:      
113.170MiB/s
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) INFO: Contended upload rate for 4 tiled threads:       
112.284MiB/s
(gem_fence_upload:6234) INFO: Contended upload rate for 8 linear threads:      
101.350MiB/s
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) INFO: Contended upload rate for 8 tiled threads:       
113.155MiB/s
(gem_fence_upload:6234) INFO: Contended upload rate for 16 linear threads:     
 77.813MiB/s
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) INFO: Contended upload rate for 16 tiled threads:      
 90.149MiB/s
(gem_fence_upload:6234) INFO: Contended upload rate for 32 linear threads:     
 74.291MiB/s
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) drmtest-DEBUG: Test requirement passed:
is_i915_device(fd) && has_known_intel_chipset(fd)
(gem_fence_upload:6234) INFO: Contended upload rate for 32 tiled threads:      
 60.614MiB/s
(gem_fence_upload:6234) CRITICAL: Test assertion failure function
thread_contention, file gem_fence_upload.c:331:
(gem_fence_upload:6234) CRITICAL: Failed assertion: linear[1] > 0.75 *
linear[0]
****  END  ****
Subtest thread-contention: FAIL (25.782s)

dmesg
===========================================
[ 4790.291571] gem_fence_upload: executing
[ 4790.291783] gem_fence_upload: starting subtest thread-contention
[ 4790.291833] [drm:i915_gem_open]
[ 4790.293423] [drm:i915_gem_open]
[ 4816.084275] gem_fence_upload: exiting, ret=99


As additional comment there is a bug
https://bugs.freedesktop.org/show_bug.cgi?id=80079
which contains this test, but this issue was already passing and it is failing
now.

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