<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BYT] gem_fence_upload subtest thread-contention fails [regresion]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97939">97939</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BYT] gem_fence_upload subtest thread-contention fails [regresion]
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>luis.botello.ortega@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>i915 platform</th>
<td>BYT
</td>
</tr></table>
<p>
<div>
<pre>Description
==========================================
gem_fence_upload subtest thread-contention is failing with the new versions
Good Commit
==========================================
commit bef9c1f4afe24cfff578d386bde349add65673eb
Author: Joonas Lahtinen <<a href="mailto:joonas.lahtinen@linux.intel.com">joonas.lahtinen@linux.intel.com</a>>
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 <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
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
<a class="bz_bug_link
bz_status_NEW "
title="NEW - [All] Performance degradation due to fence contention with igt/gem_fence_upload"
href="show_bug.cgi?id=80079">https://bugs.freedesktop.org/show_bug.cgi?id=80079</a>
which contains this test, but this issue was already passing and it is failing
now.</pre>
</div>
</p>
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