diff --git a/lib/libspl/include/sys/time.h b/lib/libspl/include/sys/time.h
index 03da3f7e3..f05fcaa1c 100644
--- a/lib/libspl/include/sys/time.h
+++ b/lib/libspl/include/sys/time.h
@@ -58,6 +58,15 @@
 #define	NSEC2MSEC(n)    ((n) / (NANOSEC / MILLISEC))
 #endif
 
+#ifndef	NSEC2SEC
+#define	NSEC2SEC(n)	((n) / (NANOSEC / SEC))
+#endif
+
+#ifndef SEC2NSEC
+#define	SEC2NSEC(m)	((hrtime_t)(m) * (NANOSEC / SEC))
+#endif
+
+
 typedef	long long		hrtime_t;
 typedef	struct	timespec	timestruc_t;
 typedef	struct	timespec	timespec_t;
diff --git a/module/zfs/arc.c b/module/zfs/arc.c
index faed67aa4..89d11ef42 100644
--- a/module/zfs/arc.c
+++ b/module/zfs/arc.c
@@ -3430,7 +3430,7 @@ static void
 arc_reclaim_thread(void)
 {
 	fstrans_cookie_t	cookie = spl_fstrans_mark();
-	clock_t			growtime = 0;
+	hrtime_t		growtime = 0;
 	callb_cpr_t		cpr;
 
 	CALLB_CPR_INIT(&cpr, &arc_reclaim_lock, callb_generic_cpr, FTAG);
@@ -3454,7 +3454,7 @@ arc_reclaim_thread(void)
 			 * Wait at least zfs_grow_retry (default 5) seconds
 			 * before considering growing.
 			 */
-			growtime = ddi_get_lbolt() + (arc_grow_retry * hz);
+			growtime = gethrtime() + SEC2NSEC(arc_grow_retry);
 
 			arc_kmem_reap_now();
 
@@ -3473,7 +3473,7 @@ arc_reclaim_thread(void)
 			}
 		} else if (free_memory < arc_c >> arc_no_grow_shift) {
 			arc_no_grow = B_TRUE;
-		} else if (ddi_get_lbolt() >= growtime) {
+		} else if (gethrtime() >= growtime) {
 			arc_no_grow = B_FALSE;
 		}
 
@@ -3506,8 +3506,8 @@ arc_reclaim_thread(void)
 			 * even if we aren't being signalled)
 			 */
 			CALLB_CPR_SAFE_BEGIN(&cpr);
-			(void) cv_timedwait_sig(&arc_reclaim_thread_cv,
-			    &arc_reclaim_lock, ddi_get_lbolt() + hz);
+			(void) cv_timedwait_hires(&arc_reclaim_thread_cv,
+			    &arc_reclaim_lock, SEC2NSEC(1), MSEC2NSEC(1), 0);
 			CALLB_CPR_SAFE_END(&cpr, &arc_reclaim_lock);
 		}
 	}