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<body><span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BAT] igt@gem_mmap_gtt@basic-wc - Failed assertion: gtt_writes > cpu_writes/2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102995">bug 102995</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>CLOSED
</td>
<td>REOPENED
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<td style="text-align:right;">Resolution</td>
<td>WORKSFORME
</td>
<td>---
</td>
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BAT] igt@gem_mmap_gtt@basic-wc - Failed assertion: gtt_writes > cpu_writes/2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102995#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [BAT] igt@gem_mmap_gtt@basic-wc - Failed assertion: gtt_writes > cpu_writes/2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102995">bug 102995</a>
from <span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span></b>
<pre>On QA BYT the issue still exists, not sure what's different.
$ : time sudo -E ./gem_mmap_gtt --r basic-wc
IGT-Version: 1.20-g9fe5a9a (x86_64) (Linux:
4.14.0-rc8-drm-intel-qa-ww45-commit-b911f67+ x86_64)
(gem_mmap_gtt:6261) CRITICAL: Test assertion failure function test_wc, file
gem_mmap_gtt.c:286:
(gem_mmap_gtt:6261) CRITICAL: Failed assertion: gtt_writes > cpu_writes/2
(gem_mmap_gtt:6261) CRITICAL: Write-Combined writes are expected to be roughly
equivalent to WB writes: WC (gtt)=2623.16MiB/s, WB (cpu)=5517.15MiB/s</pre>
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