The serger machine, also known as an overlock, has revolutionized home sewing. They are fast, convenient, andd produce a professional seam. A serger will sew up to 1700 stitches per minute wheras the conventional sewing machine sews form 700 to 1100 stitches per minute. They can stitch, trim and overcast all at the same time. Another plus for sergers is the way they handle all fabrics from difficult to control silks and sheers to easy to handle knits.
Young, Louise, "Clothing Management: Serger Sense" (1992). All Archived Publications. Paper 227.