diff --git a/wally/suits/io/ceph.cfg b/wally/suits/io/ceph.cfg
index 22a4937..e134e4c 100644
--- a/wally/suits/io/ceph.cfg
+++ b/wally/suits/io/ceph.cfg
@@ -11,7 +11,7 @@
 runtime=180
 
 # ---------------------------------------------------------------------
-# check different thread count, sync mode. (latency, iops) = func(th_count)
+# check different QD, direct mode. (latency, iops) = func(th_count)
 # ---------------------------------------------------------------------
 [ceph_{TEST_SUMM}]
 blocksize=4k
@@ -19,17 +19,16 @@
 iodepth={QD_W}
 
 # ---------------------------------------------------------------------
-# check different thread count, direct read mode. (latency, iops) = func(th_count)
+# check different QD, direct read mode. (latency, iops) = func(th_count)
 # also check iops for randread
 # ---------------------------------------------------------------------
 [ceph_{TEST_SUMM}]
 blocksize=4k
 rw=randread
-direct=1
 iodepth={QD_R}
 
 # ---------------------------------------------------------------------
-# sync write
+# sync write - disabled for now
 # ---------------------------------------------------------------------
 #[ceph_{TEST_SUMM}]
 #blocksize=4k
@@ -43,10 +42,15 @@
 # we can't use sequential with numjobs > 1 due to caching and block merging
 # ---------------------------------------------------------------------
 [ceph_{TEST_SUMM}]
-blocksize=16m
-rw=randwrite
-direct=1
-iodepth={QD_SEQ_W}
+blocksize=1m
+rw=write
+iodepth=1
+# offset_increment={OFFSET_INC}
+
+#[ceph_{TEST_SUMM}]
+#blocksize=16m
+#rw=randwrite
+#iodepth={QD_SEQ_W}
 
 # ---------------------------------------------------------------------
 # this is essentially sequential read operations
@@ -55,5 +59,4 @@
 [ceph_{TEST_SUMM}]
 blocksize=16m
 rw=randread
-direct=1
 iodepth={QD_SEQ_R}