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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [amdgpu SI] low performace, low (about 1/4) VRAM usage"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97593">97593</a>
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<th>Summary</th>
<td>[amdgpu SI] low performace, low (about 1/4) VRAM usage
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/AMDgpu
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>arek.rusi@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=126201" name="attach_126201" title="screenshot from unigine-heaven">attachment 126201</a> <a href="attachment.cgi?id=126201&action=edit" title="screenshot from unigine-heaven">[details]</a></span>
screenshot from unigine-heaven
Hi, I've tried amdgpu driver for SI and GL apps run much slower than for
radeon.
Unigine-Heaven drops from 20 fps to 8 fps
VRAM usage ~ 200MB
requested VRAM ~500MB
GTT usage ~ 500MB
Look at the screenshot for more.
drm-next-4.9-wip: 48fad3aff638c7bc16656e31047f689aa44020a1
xorg-git
mesa-git:98f734e
llvm-svn:280612
libdrm:4462303 + 2 patches for SI support from amd-gfx's list
I used unigine-heaven benchmark for first shot but more apps in affected:
Alien Isolation
Shadow of Mordor
Bioshock Infinite
Metro 2033 Redux
XCOM
The Witcher 2
xonotic (for quality "low" performance is normal)
In fact only glxgears, lightsmark, gputest(all),openarena are not affected :)
In any case VRAM-usage isn't raised over a 250MB but dmesg & xorg logs are
different for each games, I will try update the logs later.
I've tested it with dpm=1, but dpm=0 makes nothing.</pre>
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