[Bug 790989] compositor performance regression

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=790989

--- Comment #7 from Florent Thiéry <florent.thiery at ubicast.eu> ---
>From now on i'll be only comparing gst-uninstalled and gst-build (not stable).

Removing compositor does not exhibit the problem (getting the same time in
both):

gst-launch-1.0 filesrc location=/dev/zero blocksize=3110400 num-buffers=9000 !
queue name=vparse ! rawvideoparse width=1920 height=1080 framerate=30
format=nv12 ! queue name=compin ! fakesink -v

Even this reproduces the problem:

gst-launch-1.0 videotestsrc num-buffers=100000 pattern=black ! compositor !
fakesink -v

perf shows the following difference (see my attached png file, top is
gst-build, bottom is gst-uninstalled):

gst-build (18s):

  10,20%  compositor0:src  libc-2.26.so                  [.]
__memset_avx2_unaligned_erms

gst-uninstalled (8s):
   0,73%  compositor0:src  libc-2.26.so                   [.]
__memset_avx2_unaligned_erms

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.