Disk performance

[J.R. Westmoreland]

Hardware: Micronics 20 MHz 386 with 10MB ram, WD1007-VSE2 with 2 diskette
	drives and 1 CDC 94186-766, etc.
Software: SCO UNIX system v/386 3.2.0,
	PCDOS v3.3.
Hard Disk Layout: First partition 33MB DOS area.
	Second partition UNIX area.
Problem: The disk performance is very slow under UNIX.  The performance under
	DOS is fast, at least appears to be very fast.  The UNIX area is
	logically devided in to two areas the root and a separate /u area.

Any recommended solutions or suggestions?

Thanks for any help any one might be able to offer.

J.R. Westmoreland