diff --git a/kernel/mars_copy.c b/kernel/mars_copy.c
index 7aa74be1..1bfc3087 100644
--- a/kernel/mars_copy.c
+++ b/kernel/mars_copy.c
@@ -57,6 +57,9 @@
 int mars_copy_overlap = 1;
 EXPORT_SYMBOL_GPL(mars_copy_overlap);
 
+/* Always leave at 1, disable only for throughput _testing_ */
+int mars_copy_strict_write_order = 1;
+
 int mars_copy_timeout = 180;
 
 int mars_copy_read_prio = MARS_PRIO_NORMAL;
@@ -551,7 +554,9 @@ restart:
 		 * Currenty, bio and aio are obeying this. Be careful when
 		 * implementing new IO bricks!
 		 */
-		if (st->prev >= 0 && !GET_STATE(brick, st->prev).writeout) {
+		if (mars_copy_strict_write_order &&
+		    st->prev >= 0 &&
+		    !GET_STATE(brick, st->prev).writeout) {
 			goto idle;
 		}
 		mref0 = st->table[0];
diff --git a/kernel/mars_copy.h b/kernel/mars_copy.h
index a5c0dc8e..fe8e42bb 100644
--- a/kernel/mars_copy.h
+++ b/kernel/mars_copy.h
@@ -33,6 +33,7 @@
 #define COPY_INPUT_NR 4
 
 extern int mars_copy_overlap;
+extern int mars_copy_strict_write_order;
 extern int mars_copy_timeout;
 extern int mars_copy_read_prio;
 extern int mars_copy_write_prio;
diff --git a/kernel/sy_old/mars_proc.c b/kernel/sy_old/mars_proc.c
index 1c439377..807a2888 100644
--- a/kernel/sy_old/mars_proc.c
+++ b/kernel/sy_old/mars_proc.c
@@ -322,6 +322,7 @@ struct ctl_table mars_table[] = {
 #endif
 	INT_ENTRY("io_flying_count",      mars_global_io_flying,  0400),
 	INT_ENTRY("copy_overlap",         mars_copy_overlap,      0600),
+	INT_ENTRY("copy_strict_write_order", mars_copy_strict_write_order, 0600),
 	INT_ENTRY("copy_timeout",         mars_copy_timeout,      0600),
 	INT_ENTRY("copy_read_prio",       mars_copy_read_prio,    0600),
 	INT_ENTRY("copy_write_prio",      mars_copy_write_prio,   0600),