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<body><span class="vcard"><a class="email" href="mailto:matthew.auld@intel.com" title="mwa <matthew.auld@intel.com>"> <span class="fn">mwa</span></a>
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<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [IGT] [APL/SKL] igt@perf@oa-exponents assertion: timestamp_delta == expected_timestamp_delta"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102480">bug 102480</a>
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<td>NEW
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<td>NEEDINFO
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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [IGT] [APL/SKL] igt@perf@oa-exponents assertion: timestamp_delta == expected_timestamp_delta"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102480#c12">Comment # 12</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [IGT] [APL/SKL] igt@perf@oa-exponents assertion: timestamp_delta == expected_timestamp_delta"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102480">bug 102480</a>
from <span class="vcard"><a class="email" href="mailto:matthew.auld@intel.com" title="mwa <matthew.auld@intel.com>"> <span class="fn">mwa</span></a>
</span></b>
<pre>The oa-exponents test was recently reworked, might be worth trying:
commit 4a8d621cdf876bd3774cec719fd4e92b77ff86aa
Author: Lionel Landwerlin <<a href="mailto:lionel.g.landwerlin@intel.com">lionel.g.landwerlin@intel.com</a>>
Date: Mon Apr 24 22:28:57 2017 -0700
tests/perf: rework oa-exponent test
New issues that were discovered while making the tests work on Gen8+ :
- we need to measure timings between periodic reports and discard all
other kind of reports
- it seems periodicity of the reports can be affected outside of RC6
(frequency change), we can detect this by looking at the amount of
clock cycles per timestamp deltas</pre>
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