perf report opengl/egl glimagesink vs vaapsink

GST_GL_WINDOW=x11 GST_GL_API=opengl GST_GL_PLATFORM=egl perf record `which gst-launch-1.0` playbin uri=file:////opt/Videos/test.mp4 -video-sink=glimagesink
single CPU Load 40%,  perf report:

  31.19%  gstglcontext     libc-2.19.so                  [.] __memcpy_sse2_unaligned
  12.96%  vqueue:src       libc-2.19.so                  [.] __memcpy_sse2_unaligned
   4.10%  vqueue:src       [kernel.kallsyms]             [k] memset
   4.09%  gstglcontext     [kernel.kallsyms]             [k] memset
   1.12%  gstglcontext     [kernel.kallsyms]             [k] _raw_spin_lock
   1.08%  vqueue:src       [kernel.kallsyms]             [k] get_page_from_freelist
   1.08%  gstglcontext     [kernel.kallsyms]             [k] get_page_from_freelist
   1.02%  vqueue:src       [kernel.kallsyms]             [k] _raw_spin_lock
   0.82%  gstglcontext     [kernel.kallsyms]             [k] __rmqueue
   0.82%  vqueue:src       [ttm]                         [k] ttm_dma_unpopulate
   0.70%  vqueue:src       [kernel.kallsyms]             [k] __rmqueue
   0.68%  gstglcontext     [ttm]                         [k] ttm_dma_unpopulate
   0.68%  gstglcontext     [kernel.kallsyms]             [k] free_pcppages_bulk
   0.60%  vqueue:src       [kernel.kallsyms]             [k] free_pcppages_bulk
   0.53%  vqueue:src       [kernel.kallsyms]             [k] __alloc_pages_nodemask
   0.52%  gstglcontext     [kernel.kallsyms]             [k] __alloc_pages_nodemask

GST_GL_WINDOW=x11 GST_GL_API=opengl GST_GL_PLATFORM=egl perf record `which gst-launch-1.0` playbin uri=file:////opt/Videos/test.mp4
single CPU load 5-7%, perf report:

   3.77%  multiqueue0:src  [kernel.kallsyms]             [k] native_read_tsc
   3.04%  multiqueue0:src  [kernel.kallsyms]             [k] delay_tsc
   2.39%  multiqueue0:src  libgstlibav.so                [.] decode_ics.constprop.23
   1.87%  multiqueue0:src  libc-2.19.so                  [.] __memcpy_sse2_unaligned
   1.32%  multiqueue0:src  [kernel.kallsyms]             [k] pci_conf1_read
   0.92%  multiqueue0:src  libc-2.19.so                  [.] memset
   0.89%  qtdemux0:sink    [kernel.kallsyms]             [k] copy_user_enhanced_fast_string
   0.80%  vqueue:src       libgobject-2.0.so.0.4503.0    [.] g_type_check_instance_is_fundamentally_a
   0.65%  multiqueue0:src  libc-2.19.so                  [.] _int_malloc