[Bug 111090] New: 3% perf drop in GfxBench Manhattan 3.0, 3.1 and CarChase test-cases
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Jul 8 15:59:04 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=111090
Bug ID: 111090
Summary: 3% perf drop in GfxBench Manhattan 3.0, 3.1 and
CarChase test-cases
Product: DRI
Version: DRI git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: eero.t.tamminen at intel.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Between following drm-tip commits:
* e8f06c34fa: 2019y-05m-27d-14h-41m-23s UTC integration manifest
* 8991a80f85: 2019y-05m-28d-15h-47m-22s UTC integration manifest
There was a performance drop in GfxBench Manhattan 3.0 (gl_manhattan) & 3.1
(gl_manhattan31) and CarChase (gl_4) test-cases:
* testfw_app --gfx glfw --gl_api desktop_core --width 1920 --height 1080
--fullscreen 1 --test_id gl_manhattan
This drop is visible both with onscreen and offscreen tests, both with X server
/ Unity and Weston.
Performance drop is most clear with Weston / GLES on BXT, regardless of whether
test-case runs under Xwayland or is Wayland native, where it's close to 3%.
With X server / GL, perf drop is visible only in Manhattan 3.0 on BXT, and
marginally in Manhattan 3.1 on KBL GT3e.
No test-cases have improved their performance in this same time period.
This regression isn't visible on BDW GT2 or SKL GT2 (I have data only from
these 5 machines).
Looking at the iowait and RAPL data, at least the Manhattan 3.0 test-case is
now a bit more GPU (IO) bound, and GPU (uncore) uses clearly less power. I.e.
it seems that since end of May, kernel doesn't let Mesa to utilize GPU as fully
as before.
--
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20190708/4ee378c5/attachment.html>
More information about the intel-gfx-bugs
mailing list