diff --git a/src/ack.rs b/src/ack.rs
index b4bc5e1..d4911b9 100644
--- a/src/ack.rs
+++ b/src/ack.rs
@@ -32,29 +32,26 @@ impl AckBatcher {
     }
 
     pub async fn run(mut self) -> lapin::Result<()> {
-        let mut not_before = Instant::now();
         let mut buffer = Vec::with_capacity(ACK_BUFFER_LEN);
+        let mut ack_sizes = vec![];
 
-        let mut time_good = true;
         loop {
             let mut data_good = false;
-            while !(time_good && data_good) {
-                select! {
-                    num_received = self.recv.recv_many(&mut buffer, ACK_BUFFER_LEN) => {
-                        if num_received == 0 { println!("ack done"); return Ok(()); }
-                        for (tag, result) in buffer.drain(..) {
-                            //println!("rm.insert({}..{}+1, {:?}); rm.check_invariants();", tag, tag, &result);
-                            self.enqueue(tag, result);
-                            data_good = data_good || tag == self.acked + 1;
-                        }
-                    }
-                    _ = sleep_until(not_before), if !time_good => time_good = true
+            while !data_good {
+                let num_received = self.recv.recv_many(&mut buffer, ACK_BUFFER_LEN).await;
+                if num_received == 0 {
+                    println!("ack done {} {} {}", ack_sizes.iter().sum::<u64>(), ack_sizes.len(), (ack_sizes.iter().sum::<u64>() as f64) / (ack_sizes.len() as f64));
+                    return Ok(());
+                }
+                for (tag, result) in buffer.drain(..) {
+                    //println!("rm.insert({}..{}+1, {:?}); rm.check_invariants();", tag, tag, &result);
+                    self.enqueue(tag, result);
+                    data_good = data_good || tag == self.acked + 1;
                 }
             }
 
             //println!("ack status {:?}", self.pending);
             let mut ack_count = 0;
-            let mut max_ack_size = 0;
             loop {
                 ack_count += 1;
                 let (ack_range, res) = self.pending.peek_first().unwrap();
@@ -69,13 +66,11 @@ impl AckBatcher {
                     Err(requeue) => self.chan.basic_nack(ack_to, BasicNackOptions { multiple: true, requeue }).await,
                 }?;
 
-                max_ack_size = max_ack_size.max(ack_to - self.acked);
+                ack_sizes.push(ack_to - self.acked);
                 self.acked = ack_to;
                 if !self.ready() { break; }
             }
-            println!("ack sleep {} {}", ack_count, max_ack_size);
-            not_before = Instant::now() + self.max_wait;
-            time_good = false;
+            println!("ack sleep {}", ack_count);
         }
     }
 }
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 7785d5c..7445775 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -43,18 +43,18 @@ async fn main() -> Result<()> {
     }).await?;
 
     tokio::try_join!(
-        async {
-            let mut proc = Processor::new(broker_connect().await?, 10_000).await?;
+        tokio::spawn(async {
+            let mut proc = Processor::new(broker_connect().await?, 65_535).await?;
             for i in 0..QUEUE_COUNT {
                 proc.listen(&format!("hello-{}", i), &format!("processor-{}", i), move |data| process(data, i)).await?;
             }
             quit_signal.await.unwrap();
             proc.shutdown().await
-        },
-        async {
+        }),
+        tokio::spawn(async {
             let chan = conn.create_channel().await?;
             sender(conn, chan).await
-        },
+        }),
     )?;
 
     Ok(())