perf 09062019

Pipeline	Before (MB/s)	After (MB/s)	Delta (%)
1	1.60387695	1.41488281	11.7835809
2	2.2434375	2.03605469	9.24397548
4	4.2334375	3.12563477	26.1679246
8	5.29126953	3.58050781	32.3317818
16	6.85478516	4.08060547	40.4707022
32	7.24694336	3.97900391	45.0940388
64	8.01556641	4.26019531	46.850976
128	8.26995117	4.17865234	49.471862
256	6.81688477	4.08585938	40.0626604
512	8.33287109	4.57947266	45.0432797
1024	10.5332227	5.62689453	46.5795541
2048	10.0971875	5.6987793	43.5607262
4096	9.68641602	5.66899414	41.4748021