<html>
<head>
<base href="https://bugs.freedesktop.org/">
</head>
<body>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Performance: extra&costly SSBO validation even when SSBO aren't used"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96355#c8">Comment # 8</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Performance: extra&costly SSBO validation even when SSBO aren't used"
href="https://bugs.freedesktop.org/show_bug.cgi?id=96355">bug 96355</a>
from <span class="vcard"><a class="email" href="mailto:gediminas@varciai.lt" title="Gediminas Jakutis <gediminas@varciai.lt>"> <span class="fn">Gediminas Jakutis</span></a>
</span></b>
<pre>I don't know about the reporter's case, but I have ran some benchmarks and
tests with f018456901ee291181ecce74c30b19c9f6731f06 (latest revision before
those four patches) and fd6bbc2ee205ed02f66a8d8ef5b2adf4005d588c (the latest
revision, with the four patches) on my GTX 770 + FX-8320 @ 4.1GHz, focusing on
CPU-bound cases.
The results are all to the better - on most games I tested I see 4-10%
performance boost. Am only going to list a pair of highlights:
· Age of Wonders III, my own severely CPU limited testcase: 21 fps -> 26 fps, a
jump by a whooping 23.8% (still CPU-bound, though).
· Payday 2, well, this game has no [reproducable] way to benchmark it, but the
gameplay used to be nightmare filled with severe rubber-banding, running just
some 18-22 fps in many situations, all while painfully CPU-bound. Now, most of
rubber-banding is either gone or is a lot less noticeable. The framerate in
these aforementioned situations went up to 25-60; dipping below 30 very rarely,
while mostly maintaining over 2x performance boost. Basically, these four
patches made the game *playable* on nouveau. (The game is still very painfully
CPU-bound, though.)
So, at least here, I can see clear performance benefits.
Will leave to be marked as RESOLVED by the reporter; don't want to hijack his
issue.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>