Index: libcfa/src/concurrency/io.cfa
===================================================================
--- libcfa/src/concurrency/io.cfa	(revision 2fafe7eaade023aeffc0c15a4090d21980e65706)
+++ libcfa/src/concurrency/io.cfa	(revision a5bc72ee443c0fd168c8da08611139c1ba7b46a4)
@@ -245,5 +245,5 @@
 				__STATS__( true,
 					io.complete_q.completed_avg.val += count;
-					io.complete_q.completed_avg.fast_cnt += 1;
+					io.complete_q.completed_avg.cnt += 1;
 				)
 			enable_interrupts( __cfaabi_dbg_ctx );
@@ -255,4 +255,7 @@
 			// We didn't get anything baton pass to the slow poller
 			else {
+				__STATS__( true,
+					io.complete_q.blocks += 1;
+				)
 				__cfadbg_print_safe(io_core, "Kernel I/O : Parking io poller %p\n", &this.self);
 				reset = 0;
Index: libcfa/src/concurrency/stats.cfa
===================================================================
--- libcfa/src/concurrency/stats.cfa	(revision 2fafe7eaade023aeffc0c15a4090d21980e65706)
+++ libcfa/src/concurrency/stats.cfa	(revision a5bc72ee443c0fd168c8da08611139c1ba7b46a4)
@@ -38,6 +38,6 @@
 			stats->io.submit_q.busy   = 0;
 			stats->io.complete_q.completed_avg.val = 0;
-			stats->io.complete_q.completed_avg.slow_cnt = 0;
-			stats->io.complete_q.completed_avg.fast_cnt = 0;
+			stats->io.complete_q.completed_avg.cnt = 0;
+			stats->io.complete_q.blocks = 0;
 		#endif
 	}
@@ -60,20 +60,20 @@
 
 		#if defined(CFA_HAVE_LINUX_IO_URING_H)
-			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.rdy          , proc->io.submit_q.submit_avg.rdy          , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.csm          , proc->io.submit_q.submit_avg.csm          , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.avl          , proc->io.submit_q.submit_avg.avl          , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.cnt          , proc->io.submit_q.submit_avg.cnt          , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.look_avg.val            , proc->io.submit_q.look_avg.val            , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.look_avg.cnt            , proc->io.submit_q.look_avg.cnt            , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.look_avg.block          , proc->io.submit_q.look_avg.block          , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.alloc_avg.val           , proc->io.submit_q.alloc_avg.val           , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.alloc_avg.cnt           , proc->io.submit_q.alloc_avg.cnt           , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.alloc_avg.block         , proc->io.submit_q.alloc_avg.block         , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.helped                  , proc->io.submit_q.helped                  , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.leader                  , proc->io.submit_q.leader                  , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.submit_q.busy                    , proc->io.submit_q.busy                    , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.complete_q.completed_avg.val     , proc->io.complete_q.completed_avg.val     , __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.complete_q.completed_avg.slow_cnt, proc->io.complete_q.completed_avg.slow_cnt, __ATOMIC_SEQ_CST );
-			__atomic_fetch_add( &cltr->io.complete_q.completed_avg.fast_cnt, proc->io.complete_q.completed_avg.fast_cnt, __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.rdy     , proc->io.submit_q.submit_avg.rdy     , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.csm     , proc->io.submit_q.submit_avg.csm     , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.avl     , proc->io.submit_q.submit_avg.avl     , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.submit_avg.cnt     , proc->io.submit_q.submit_avg.cnt     , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.look_avg.val       , proc->io.submit_q.look_avg.val       , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.look_avg.cnt       , proc->io.submit_q.look_avg.cnt       , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.look_avg.block     , proc->io.submit_q.look_avg.block     , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.alloc_avg.val      , proc->io.submit_q.alloc_avg.val      , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.alloc_avg.cnt      , proc->io.submit_q.alloc_avg.cnt      , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.alloc_avg.block    , proc->io.submit_q.alloc_avg.block    , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.helped             , proc->io.submit_q.helped             , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.leader             , proc->io.submit_q.leader             , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.submit_q.busy               , proc->io.submit_q.busy               , __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.complete_q.completed_avg.val, proc->io.complete_q.completed_avg.val, __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.complete_q.completed_avg.cnt, proc->io.complete_q.completed_avg.cnt, __ATOMIC_SEQ_CST );
+			__atomic_fetch_add( &cltr->io.complete_q.blocks           , proc->io.complete_q.blocks           , __ATOMIC_SEQ_CST );
 		#endif
 	}
@@ -154,6 +154,7 @@
 					"- avg alloc search len   : %'18.2lf\n"
 					"- avg alloc search block : %'18.2lf\n"
-					"- total wait calls       : %'15" PRIu64 "   (%'" PRIu64 " slow, %'" PRIu64 " fast)\n"
+					"- total wait calls       : %'15" PRIu64 "\n"
 					"- avg completion/wait    : %'18.2lf\n"
+					"- total completion blocks: %'15" PRIu64 "\n"
 					"\n"
 					, cluster ? "Cluster" : "Processor",  name, id
@@ -165,7 +166,7 @@
 					, io.submit_q.alloc_avg.cnt
 					, aavgv, aavgb
-					, io.complete_q.completed_avg.slow_cnt + io.complete_q.completed_avg.fast_cnt
-					, io.complete_q.completed_avg.slow_cnt,  io.complete_q.completed_avg.fast_cnt
-					, ((double)io.complete_q.completed_avg.val) / (io.complete_q.completed_avg.slow_cnt + io.complete_q.completed_avg.fast_cnt)
+					, io.complete_q.completed_avg.cnt
+					, ((double)io.complete_q.completed_avg.val) / io.complete_q.completed_avg.cnt
+					, io.complete_q.blocks
 				);
 			}
Index: libcfa/src/concurrency/stats.hfa
===================================================================
--- libcfa/src/concurrency/stats.hfa	(revision 2fafe7eaade023aeffc0c15a4090d21980e65706)
+++ libcfa/src/concurrency/stats.hfa	(revision a5bc72ee443c0fd168c8da08611139c1ba7b46a4)
@@ -90,7 +90,7 @@
 				struct {
 					volatile uint64_t val;
-					volatile uint64_t slow_cnt;
-					volatile uint64_t fast_cnt;
+					volatile uint64_t cnt;
 				} completed_avg;
+				volatile uint64_t blocks;
 			} complete_q;
 		};