diff --git a/stat.c b/stat.c
index 8e1034b..5cc6b7b 100644
--- a/stat.c
+++ b/stat.c
@@ -277,9 +277,9 @@
 		p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p);
 
 		log_info("%s: io=%sB, aggrb=%sB/s, minb=%sB/s, maxb=%sB/s,"
-			 " mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2,
-						p3, p4, rs->min_run[i],
-						rs->max_run[i]);
+			 " mint=%llumsec, maxt=%llumsec\n",
+				rs->unified_rw_rep ? "  MIXED" : ddir_str[i],
+				p1, p2, p3, p4, rs->min_run[i], rs->max_run[i]);
 
 		free(p1);
 		free(p2);
@@ -381,8 +381,8 @@
 	iops_p = num2str(iops, 6, 1, 0);
 
 	log_info("  %s: io=%sB, bw=%sB/s, iops=%s, runt=%6llumsec\n",
-					ddir_str[ddir], io_p, bw_p, iops_p,
-					ts->runtime[ddir]);
+				rs->unified_rw_rep ? "mixed" : ddir_str[ddir],
+				io_p, bw_p, iops_p, ts->runtime[ddir]);
 
 	free(io_p);
 	free(bw_p);
@@ -695,8 +695,12 @@
 
 	assert(ddir_rw(ddir));
 
+	if (ts->unified_rw_rep && ddir != DDIR_READ)
+		return;
+
 	dir_object = json_create_object();
-	json_object_add_value_object(parent, ddirname[ddir], dir_object);
+	json_object_add_value_object(parent,
+		ts->unified_rw_rep ? "mixed" : ddirname[ddir], dir_object);
 
 	iops = bw = 0;
 	if (ts->runtime[ddir]) {
@@ -1062,15 +1066,27 @@
 	int l, k;
 
 	for (l = 0; l < DDIR_RWDIR_CNT; l++) {
-		sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
-		sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
-		sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
-		sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
+		if (!dst->unified_rw_rep) {
+			sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
+			sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
+			sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
+			sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
 
-		dst->io_bytes[l] += src->io_bytes[l];
+			dst->io_bytes[l] += src->io_bytes[l];
 
-		if (dst->runtime[l] < src->runtime[l])
-			dst->runtime[l] = src->runtime[l];
+			if (dst->runtime[l] < src->runtime[l])
+				dst->runtime[l] = src->runtime[l];
+		} else {
+			sum_stat(&dst->clat_stat[0], &src->clat_stat[l], nr);
+			sum_stat(&dst->slat_stat[0], &src->slat_stat[l], nr);
+			sum_stat(&dst->lat_stat[0], &src->lat_stat[l], nr);
+			sum_stat(&dst->bw_stat[0], &src->bw_stat[l], nr);
+
+			dst->io_bytes[0] += src->io_bytes[l];
+
+			if (dst->runtime[0] < src->runtime[l])
+				dst->runtime[0] = src->runtime[l];
+		}
 	}
 
 	dst->usr_time += src->usr_time;
@@ -1091,14 +1107,24 @@
 		dst->io_u_lat_m[k] += src->io_u_lat_m[k];
 
 	for (k = 0; k < DDIR_RWDIR_CNT; k++) {
-		dst->total_io_u[k] += src->total_io_u[k];
-		dst->short_io_u[k] += src->short_io_u[k];
+		if (!dst->unified_rw_rep) {
+			dst->total_io_u[k] += src->total_io_u[k];
+			dst->short_io_u[k] += src->short_io_u[k];
+		} else {
+			dst->total_io_u[0] += src->total_io_u[k];
+			dst->short_io_u[0] += src->short_io_u[k];
+		}
 	}
 
 	for (k = 0; k < DDIR_RWDIR_CNT; k++) {
 		int m;
-		for (m = 0; m < FIO_IO_U_PLAT_NR; m++)
-			dst->io_u_plat[k][m] += src->io_u_plat[k][m];
+
+		for (m = 0; m < FIO_IO_U_PLAT_NR; m++) {
+			if (!dst->unified_rw_rep)
+				dst->io_u_plat[k][m] += src->io_u_plat[k][m];
+			else
+				dst->io_u_plat[0][m] += src->io_u_plat[k][m];
+		}
 	}
 
 	dst->total_run_time += src->total_run_time;
@@ -1210,6 +1236,7 @@
 			ts->pid = td->pid;
 
 			ts->kb_base = td->o.kb_base;
+			ts->unified_rw_rep = td->o.unified_rw_rep;
 		} else if (ts->kb_base != td->o.kb_base && !kb_base_warned) {
 			log_info("fio: kb_base differs for jobs in group, using"
 				 " %u as the base\n", ts->kb_base);
@@ -1239,6 +1266,7 @@
 		ts = &threadstats[i];
 		rs = &runstats[ts->groupid];
 		rs->kb_base = ts->kb_base;
+		rs->unified_rw_rep += ts->unified_rw_rep;
 
 		for (j = 0; j < DDIR_RWDIR_CNT; j++) {
 			if (!ts->runtime[j])