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<body><span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@perf_pmu@busy-accuracy-* - fail - Failed assertion: (double)(busy_r) <= (1.0 + (0.15)) * (double)((double)target_busy_pct / 100.0) && (double)(busy_r) >= (1.0 - (0.15)) * (double)((double)target_busy_pct / 100.0)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105157">bug 105157</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>FIXED
</td>
<td>---
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@perf_pmu@busy-accuracy-* - fail - Failed assertion: (double)(busy_r) <= (1.0 + (0.15)) * (double)((double)target_busy_pct / 100.0) && (double)(busy_r) >= (1.0 - (0.15)) * (double)((double)target_busy_pct / 100.0)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105157#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CI] igt@perf_pmu@busy-accuracy-* - fail - Failed assertion: (double)(busy_r) <= (1.0 + (0.15)) * (double)((double)target_busy_pct / 100.0) && (double)(busy_r) >= (1.0 - (0.15)) * (double)((double)target_busy_pct / 100.0)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105157">bug 105157</a>
from <span class="vcard"><a class="email" href="mailto:martin.peres@free.fr" title="Martin Peres <martin.peres@free.fr>"> <span class="fn">Martin Peres</span></a>
</span></b>
<pre>(In reply to Chris Wilson from <a href="show_bug.cgi?id=105157#c18">comment #18</a>)
<span class="quote">> commit d502f055ac4500cada758876a512ac4f14b34851
> Author: Tvrtko Ursulin <<a href="mailto:tvrtko.ursulin@intel.com">tvrtko.ursulin@intel.com</a>>
> Date: Wed Apr 4 10:51:52 2018 +0100
>
> tests/perf_pmu: Avoid RT thread for accuracy test
>
> Realtime scheduling interferes with execlists submission (tasklet) so try
> to simplify the PWM loop in a few ways:
>
> * Drop RT.
> * Longer batches for smaller systematic error.
> * More truthful test duration calculation.
> * Less clock queries.
> * No self-adjust - instead just report the achieved cycle and let the
> parent check against it.
> * Report absolute cycle error.</span >
Still visible every single run...</pre>
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