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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL]igt/gem_pwrite_pread@display-pwrite-blt-gtt_mmap-performance sporadically causes *ERROR* Hangcheck timer elapsed... blitter ring idle"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89931">89931</a>
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<th>Summary</th>
<td>[SKL]igt/gem_pwrite_pread@display-pwrite-blt-gtt_mmap-performance sporadically causes *ERROR* Hangcheck timer elapsed... blitter ring idle
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<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>huax.lu@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></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=114906" name="attach_114906" title="dmesg">attachment 114906</a> <a href="attachment.cgi?id=114906&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: not sure
Non-working platforms: SKL
==kernel==
--------------------------
drm-intel-nightly/333cf6eed7cae0ee2d6bb1b4c4d421b94f84fc13
commit 333cf6eed7cae0ee2d6bb1b4c4d421b94f84fc13
Author: Jani Nikula <<a href="mailto:jani.nikula@intel.com">jani.nikula@intel.com</a>>
Date: Thu Apr 2 11:38:12 2015 +0300
drm-intel-nightly: 2015y-04m-02d-08h-37m-57s UTC integration manifest
==Bug detailed description==
-----------------------------
Run it 2 rounds, It fails once.
gem_pwrite_pread@snooped-pwrite-blt-cpu_mmap-performance also has this issue.
output:
IGT-Version: 1.10-g43a1f64 (x86_64) (Linux:
4.0.0-rc6_drm-intel-nightly_333cf6_20150403+ x86_64)
** mmap display copy 16384 bytes x 1: 678.000µs, 24.2MiB/s
** mmap display copy 16384 bytes x 2: 514.500µs, 31.8MiB/s
** mmap display copy 16384 bytes x 4: 509.750µs, 32.1MiB/s
** mmap display copy 16384 bytes x 8: 471.500µs, 34.7MiB/s
** mmap display copy 16384 bytes x 16: 449.500µs, 36.4MiB/s
** mmap display copy 16384 bytes x 32: 435.438µs, 37.6MiB/s
** mmap display copy 16384 bytes x 64: 461.938µs, 35.5MiB/s
** mmap display copy 16384 bytes x 128: 500.539µs, 32.7MiB/s
** mmap display copy 16384 bytes x 256: 500.590µs, 32.7MiB/s
** mmap display copy 16384 bytes x 512: 500.219µs, 32.8MiB/s
** mmap display copy 16384 bytes x 1024: 499.402µs, 32.8MiB/s
** mmap display copy 16384 bytes x 2048: 500.127µs, 32.8MiB/s
** mmap display copy 16384 bytes x 4096: 500.012µs, 32.8MiB/s
** mmap display copy 16384 bytes x 8192: 500.198µs, 32.8MiB/s
** mmap display copy 16384 bytes x 16384: 500.135µs, 32.8MiB/s
** mmap display copy 16384 bytes x 32768: 500.108µs, 32.8MiB/s
** mmap display copy 16384 bytes x 65536: 500.005µs, 32.8MiB/s
** mmap display copy 16384 bytes x 131072: 528.930µs, 31.0MiB/s
Subtest display-pwrite-blt-gtt_mmap-performance: SUCCESS (134.867s)
root@x-skly05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<3>[ 7016.090135] [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer
elapsed... blitter ring idle
==Reproduce steps==
----------------------------
1. ./gem_pwrite_pread --run-subtest display-pwrite-blt-gtt_mmap-performance</pre>
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