testrun for region chr1:1000-2000 takes ages
I just wanted to try mosdepth on some of my smaller deletions:  

`mosdepth --by <(echo -e "chr1\11869\t12227") mosdepth-test-out --d4 -t 4 -f $FASTA $BAMFILE`

The command takes for ages. Do you know why? 