diff --git a/collects/tests/racket/benchmarks/places/place-channel.rktl b/collects/tests/racket/benchmarks/places/place-channel.rktl
index 55586fc1e6..eb0f9c6895 100644
--- a/collects/tests/racket/benchmarks/places/place-channel.rktl
+++ b/collects/tests/racket/benchmarks/places/place-channel.rktl
@@ -1,45 +1,75 @@
 #lang racket
 ;; stress tests for place-channels
 
-
 (define (splat txt fn)
   (call-with-output-file fn #:exists 'replace
       (lambda (out)
         (fprintf out "~a" txt))))
 
-(splat
-#<<END
-(module pct1 scheme
-  (provide place-main)
+(define (byte-message-test)
+  (splat
+  #<<END
+  (module pct1 scheme
+    (provide place-main)
 
-  (define (place-main ch)
-  (define message-size (* 4024 1024))
-  (define count 500)
-    (define fourk-b-message (make-bytes message-size 66))
-    (for ([i (in-range count)])
-     (place-channel-recv ch)
-     (place-channel-send ch fourk-b-message)
-))
-)
+    (define (place-main ch)
+      (define message-size (* 4024 1024))
+      (define count 50)
+      (define fourk-b-message (make-bytes message-size 66))
+      (for ([i (in-range count)])
+       (place-channel-recv ch)
+       (place-channel-send ch fourk-b-message)))
+  )
 END
-"pct1.ss")
+  "pct1.ss")
 
-(let ([pl (place "pct1.ss" 'place-main)])
-  (define message-size (* 4024 1024))
-  (define four-k-message (make-bytes message-size 65))
-  (define count 500)
-  (define-values (r t1 t2 t3)
-    (time-apply (lambda ()
-    (for ([i (in-range count)])
-      (place-channel-send pl four-k-message)
-      (place-channel-recv pl)
-    )) null))
+  (let ([pl (place "pct1.ss" 'place-main)])
+    (define message-size (* 4024 1024))
+    (define four-k-message (make-bytes message-size 65))
+    (define count 50)
+    (define-values (r t1 t2 t3)
+      (time-apply (lambda ()
+      (for ([i (in-range count)])
+        (place-channel-send pl four-k-message)
+        (place-channel-recv pl))) null))
 
 
-  (define B/sE (/ (* 2 count message-size) (/ t2 1000)))
-  (printf "~a ~a ~a ~a~n" r t1 t2 t3)
-  (printf "B/s ~a~n" (exact->inexact B/sE))
-  (printf "MB/s ~a~n" (exact->inexact (/ B/sE (* 1024 1024))))
-  (place-wait pl)
-)
+    (define B/sE (/ (* 2 count message-size) (/ t2 1000)))
+    (printf "~a ~a ~a ~a~n" r t1 t2 t3)
+    (printf "B/s ~a~n" (exact->inexact B/sE))
+    (printf "MB/s ~a~n" (exact->inexact (/ B/sE (* 1024 1024))))
+    (place-wait pl)))
+
+(define (cons-tree-test)
+  (splat
+  #<<END
+  (module pct1 scheme
+    (provide place-main)
+
+    (define (place-main ch)
+      (define count 500)
+      (for ([i (in-range count)])
+       (place-channel-send ch (place-channel-recv ch))))
+  )
+END
+  "pct1.ss")
+
+  (let ([pl (place "pct1.ss" 'place-main)])
+    (define tree (let loop ([depth 8])
+      (if (depth . <= . 0)
+        1
+        (cons (loop (sub1 depth)) (loop (sub1 depth))))))
+    (define count 500)
+    (define-values (r t1 t2 t3)
+      (time-apply (lambda ()
+      (for ([i (in-range count)])
+        (place-channel-send pl tree)
+        (place-channel-recv pl))) null))
+
+
+    (printf "~a ~a ~a ~a~n" r t1 t2 t3)
+    (place-wait pl)))
+
+(byte-message-test)
+(cons-tree-test)