https://github.com/biod/sambamba
SAMBAMBA-high performance highly parallel robust and fast tool for working with SAM and BAM files
function: view, index, sort, markdup, and depth.
flagstat : 1.4x faster than samtools.
Index : similar.
Markdup : ~ 6x faster
View : ~4x faster
Sort : Sambamba has been beaten, though sambamba is notably
up to 2x faster than samtools on large RAM machines (120GB+).
