diff --git a/module/zcommon/zfs_fletcher.c b/module/zcommon/zfs_fletcher.c
index 3e0632a32..c5e63a878 100644
--- a/module/zcommon/zfs_fletcher.c
+++ b/module/zcommon/zfs_fletcher.c
@@ -660,7 +660,7 @@ fletcher_4_kstat_addr(kstat_t *ksp, loff_t n)
 	fletcher_4_fastest_impl.compute_ ## type = src->compute_ ## type; \
 }
 
-#define	FLETCHER_4_BENCH_NS	(MSEC2NSEC(50))		/* 50ms */
+#define	FLETCHER_4_BENCH_NS	(MSEC2NSEC(1))		/* 1ms */
 
 typedef void fletcher_checksum_func_t(const void *, uint64_t, const void *,
 					zio_cksum_t *);
diff --git a/module/zfs/vdev_raidz_math.c b/module/zfs/vdev_raidz_math.c
index 9595a7b95..4827e0d32 100644
--- a/module/zfs/vdev_raidz_math.c
+++ b/module/zfs/vdev_raidz_math.c
@@ -360,7 +360,7 @@ raidz_math_kstat_addr(kstat_t *ksp, loff_t n)
 #define	BENCH_D_COLS	(8ULL)
 #define	BENCH_COLS	(BENCH_D_COLS + PARITY_PQR)
 #define	BENCH_ZIO_SIZE	(1ULL << SPA_OLD_MAXBLOCKSHIFT)	/* 128 kiB */
-#define	BENCH_NS	MSEC2NSEC(25)			/* 25ms */
+#define	BENCH_NS	MSEC2NSEC(1)			/* 1ms */
 
 typedef void (*benchmark_fn)(raidz_map_t *rm, const int fn);
 
@@ -410,7 +410,7 @@ benchmark_raidz_impl(raidz_map_t *bench_rm, const int fn, benchmark_fn bench_fn)
 		t_start = gethrtime();
 
 		do {
-			for (i = 0; i < 25; i++, run_cnt++)
+			for (i = 0; i < 5; i++, run_cnt++)
 				bench_fn(bench_rm, fn);
 
 			t_diff = gethrtime() - t_start;