diff --git a/sys/arch/hp300/dev/rd.c b/sys/arch/hp300/dev/rd.c
index 74dce8628c00..772655226f0e 100644
--- a/sys/arch/hp300/dev/rd.c
+++ b/sys/arch/hp300/dev/rd.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: rd.c,v 1.20 1996/02/14 02:44:54 thorpej Exp $	*/
+/*	$NetBSD: rd.c,v 1.21 1996/06/06 16:17:41 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -52,7 +52,6 @@
 #include <sys/systm.h>
 #include <sys/buf.h>
 #include <sys/stat.h>
-#include <sys/dkstat.h>		/* XXX */
 #include <sys/disklabel.h>
 #include <sys/disk.h>
 #include <sys/ioctl.h>
@@ -333,9 +332,6 @@ rdident(rs, hd, verbose)
 			name[i] = (n & 0xf) + '0';
 			n >>= 4;
 		}
-		/* use drive characteristics to calculate xfer rate */
-		rs->sc_wpms = 1000000 * (desc->d_sectsize/2) /
-		    desc->d_blocktime;
 	}
 #ifdef DEBUG
 	if (rddebug & RDB_IDENT) {
@@ -514,15 +510,6 @@ rdopen(dev, flags, mode, p)
 		if (error)
 			return(error);
 	}
-	if (rs->sc_hd->hp_dk >= 0) {
-		/* guess at xfer rate based on 3600 rpm (60 rps) */
-		if (rs->sc_wpms == 0)
-			rs->sc_wpms = 60 * rs->sc_dkdev.dk_label->d_nsectors
-				* DEV_BSIZE / 2;
-
-		/* XXX Support old-style instrumentation for now. */
-		dk_wpms[rs->sc_hd->hp_dk] = rs->sc_wpms;
-	}
 
 	mask = 1 << rdpart(dev);
 	if (mode == S_IFCHR)
@@ -711,12 +698,6 @@ again:
 	if (hpibsend(hp->hp_ctlr, hp->hp_slave, C_CMD, &rs->sc_ioc.c_unit,
 		     sizeof(rs->sc_ioc)-2) == sizeof(rs->sc_ioc)-2) {
 
-		/* XXX Support old-style instrumentation for now. */
-		if (hp->hp_dk >= 0) {
-			 dk_busy |= 1 << hp->hp_dk;
-			 dk_seek[hp->hp_dk]++;
-		}
-
 		/* Instrumentation. */
 		disk_busy(&rs->sc_dkdev);
 		rs->sc_dkdev.dk_seek++;
@@ -769,13 +750,6 @@ rdgo(unit)
 
 	rw = bp->b_flags & B_READ;
 
-	/* XXX Support old-style instrumentation for now. */
-	if (hp->hp_dk >= 0) {
-		dk_busy |= 1 << hp->hp_dk;
-		dk_xfer[hp->hp_dk]++;
-		dk_wds[hp->hp_dk] += rs->sc_resid >> 6;
-	}
-
 	/* Instrumentation. */
 	disk_busy(&rs->sc_dkdev);
 
@@ -806,10 +780,6 @@ rdintr(arg)
 		return;
 	}
 #endif
-	/* XXX Support old-style instrumentation for now. */
-	if (hp->hp_dk >= 0)
-		dk_busy &= ~(1 << hp->hp_dk);
-
 	disk_unbusy(&rs->sc_dkdev, (bp->b_bcount - bp->b_resid));
 
 	if (rs->sc_flags & RDF_SEEK) {
@@ -827,10 +797,6 @@ rdintr(arg)
 			rdstats[unit].rdpollwaits++;
 #endif
 
-			/* XXX Support old-style instrumentation for now. */
-			if (hp->hp_dk >= 0)
-				dk_busy |= 1 << hp->hp_dk;
-
 			/* Instrumentation. */
 			disk_busy(&rs->sc_dkdev);
 			rs->sc_flags |= RDF_SWAIT;
diff --git a/sys/arch/hp300/dev/rdvar.h b/sys/arch/hp300/dev/rdvar.h
index 97c21aa9b35e..f1b7727cb6c6 100644
--- a/sys/arch/hp300/dev/rdvar.h
+++ b/sys/arch/hp300/dev/rdvar.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: rdvar.h,v 1.4 1996/01/07 22:02:16 thorpej Exp $	*/
+/*	$NetBSD: rdvar.h,v 1.5 1996/06/06 16:17:42 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -61,7 +61,6 @@ struct	rd_softc {
 	short	sc_punit;
 	char	*sc_addr;
 	int	sc_resid;
-	u_int	sc_wpms;
 	struct	rd_describe sc_rddesc;
 	struct	devqueue sc_dq;
 	struct	rd_iocmd sc_ioc;
diff --git a/sys/arch/hp300/dev/sd.c b/sys/arch/hp300/dev/sd.c
index 6260683c6bea..a719caf73222 100644
--- a/sys/arch/hp300/dev/sd.c
+++ b/sys/arch/hp300/dev/sd.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: sd.c,v 1.22 1996/02/14 02:45:05 thorpej Exp $	*/
+/*	$NetBSD: sd.c,v 1.23 1996/06/06 16:17:44 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1990, 1993
@@ -48,7 +48,6 @@
 #include <sys/systm.h>
 #include <sys/buf.h>
 #include <sys/stat.h>
-#include <sys/dkstat.h>		/* XXX */
 #include <sys/disklabel.h>
 #include <sys/disk.h>
 #include <sys/malloc.h>
@@ -313,7 +312,6 @@ sdident(sc, hd, verbose)
 			printf("drive empty\n");
 	}
 
-	sc->sc_wpms = 32 * (60 * DEV_BSIZE / 2);	/* XXX */
 	scsi_delay(0);
 	return(inqbuf.type);
 failed:
@@ -606,10 +604,6 @@ sdopen(dev, flags, mode, p)
 			return(error);
 	}
 
-	/* XXX Support old-style instrumentation for now. */
-	if (sc->sc_hd->hp_dk >= 0)
-		dk_wpms[sc->sc_hd->hp_dk] = sc->sc_wpms;
-
 	mask = 1 << sdpart(dev);
 	if (mode == S_IFCHR)
 		sc->sc_dkdev.dk_copenmask |= mask;
@@ -999,14 +993,6 @@ sdgo(unit)
 #endif
 	if (scsigo(hp->hp_ctlr, hp->hp_slave, sc->sc_punit,
 	    bp, cmd, pad) == 0) {
-		/* XXX Support old-style instrumentation for now. */
-		if (hp->hp_dk >= 0) {
-			dk_busy |= 1 << hp->hp_dk;
-			++dk_seek[hp->hp_dk];
-			++dk_xfer[hp->hp_dk];
-			dk_wds[hp->hp_dk] += bp->b_bcount >> 6;
-		}
-
 		/* Instrumentation. */
 		disk_busy(&sc->sc_dkdev);
 		sc->sc_dkdev.dk_seek++;		/* XXX */
@@ -1041,10 +1027,6 @@ sdintr(arg, stat)
 		return;
 	}
 
-	/* XXX Support old-style instrumentation for now. */
-	if (hp->hp_dk >= 0)
-		dk_busy &=~ (1 << hp->hp_dk);
-
 	disk_unbusy(&sc->sc_dkdev, (bp->b_bcount - bp->b_resid));
 
 	if (stat) {
diff --git a/sys/arch/hp300/dev/sdvar.h b/sys/arch/hp300/dev/sdvar.h
index e5933f53a8d6..ada34c16a6ce 100644
--- a/sys/arch/hp300/dev/sdvar.h
+++ b/sys/arch/hp300/dev/sdvar.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: sdvar.h,v 1.4 1996/01/07 22:02:21 thorpej Exp $	*/
+/*	$NetBSD: sdvar.h,v 1.5 1996/06/06 16:17:45 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1990, 1993
@@ -52,7 +52,6 @@ struct	sd_softc {
 	int	sc_blksize;	/* device block size in bytes */
 	u_int	sc_heads;	/* number of heads (tracks) */
 	u_int	sc_cyls;	/* number of cylinders */
-	u_int	sc_wpms;	/* average xfer rate in 16 bit wds/sec. */
 };
 
 /* sc_flags values */