Что такое малярные мешки?

----- SPEED TEST START ----
0.00000000000: 0.00000000000 site.php == index.php
0.00011491776: 0.00011491776 site.php == captcha
0.00011587143: 0.00000095367 site.php == Начало
0.00011587143: 0.00000000000 site.php == Перед engine
0.00058293343: 0.00046706200 site.php == После engine
0.00319695473: 0.00261402130 site.php == _get_base_data start
0.00920891762: 0.00601196289 site.php == _get_base_data stop
0.01061177254: 0.00140285492 site.php == !!!!!!
0.01621389389: 0.00560212135 site.php == !!!!!!2
0.01621484756: 0.00000095367 site.php == Перед engine->draw(index)
0.01706695557: 0.00085210800 site.php == После engine->draw(index)
0.01706886292: 0.00000190735 site.php == check_lazy_images start
0.01716995239: 0.00010108948 site.php == check_lazy_images finish
0.01716995239: 0.00000000000 site.php == check_lazy_frame start
0.01721978188: 0.00004982948 site.php == check_lazy_frame finish
0.01721978188: 0.00000000000 site.php == Перед engine->rewrite->replace_html
0.02016592026: 0.00294613838 site.php == После engine->rewrite->replace_html
---- SPEED TEST END ----