diff --git a/collects/tests/racket/benchmarks/shootout/run.rkt b/collects/tests/racket/benchmarks/shootout/run.rkt
index 9d02cae6d8..d33ea76ede 100644
--- a/collects/tests/racket/benchmarks/shootout/run.rkt
+++ b/collects/tests/racket/benchmarks/shootout/run.rkt
@@ -3,42 +3,42 @@
            racket/port)
   (define input-map
     `(
-      ("ackermann" "11")
-      ("ary" "300000")
-      ("binarytrees" "16")
-      ("chameneos" "100000")
+      ("ackermann" "12")
+      ("ary" "600000")
+      ("binarytrees" "17")
+      ("chameneos" "120000")
       ("cheapconcurrency" "2000")
       ("echo" "200000")
       ("except" "2000000")
       ("fannkuch" "10")
       ("fannkuch-redux" "10")
       ("fasta" "1000000")
-      ("fibo" "40")
+      ("fibo" "42")
       ("hash" "2000000")
-      ("hash2" "750")
-      ("heapsort" "1500000")
+      ("hash2" "1000")
+      ("heapsort" "2500000")
       ("hello" "")
-      ("lists" "18")
+      ("lists" "2000")
       ("mandelbrot" "3000")
       ("mandelbrot-generic" "3000")
       ("mandelbrot-unsafe" "3000")
-      ("matrix" "10000")
-      ("meteor" "10000")
+      ("matrix" "12000")
+      ("meteor" "25000")
       ("moments" #f ,(lambda () (mk-moments-input)))
-      ("nbody" "2000000")
-      ("nbody-generic" "2000000")
-      ("nbody-vec" "2000000")
-      ("nbody-vec-generic" "2000000")
-      ("nbody-vec-unsafe" "2000000")
-      ("nestedloop" "30")
+      ("nbody" "3000000")
+      ("nbody-generic" "3000000")
+      ("nbody-vec" "3000000")
+      ("nbody-vec-generic" "3000000")
+      ("nbody-vec-unsafe" "3000000")
+      ("nestedloop" "32")
       ("nothing" "")
       ("nsieve" "12")
       ("nsievebits" "12")
-      ("partialsums" "2500000")
+      ("partialsums" "3000000")
       ("pidigits" "4000")
       ("pidigits1" "4000")
       ("random" "40000000")
-      ("recursive" "11")
+      ("recursive" "12")
       ("regexmatch")
       ("regexpdna" #f ,(lambda () (mk-regexpdna-input)))
       ("reversecomplement" #f ,(lambda () (mk-revcomp-input)))
@@ -46,9 +46,9 @@
       ("reversefile" #f ,(lambda () (mk-reversefile-input)))
       ("sieve" "25000")
       ("spellcheck")
-      ("spectralnorm" "5500")
-      ("spectralnorm-generic" "5500")
-      ("spectralnorm-unsafe" "5500")
+      ("spectralnorm" "1000")
+      ("spectralnorm-generic" "1000")
+      ("spectralnorm-unsafe" "1000")
       ("strcat" "50000000")
       ("sumcol" #f ,(lambda () (mk-sumcol-input)))
       ("thread-ring" "1000000")
@@ -78,10 +78,10 @@
     (mk-fasta "5000000" "5m"))
 
   (define (mk-knuc-input)
-    (mk-fasta "1000000" "1m"))
+    (mk-fasta "500000" "500k"))
 
   (define (mk-regexpdna-input)
-    (mk-fasta "5000000" "5m"))
+    (mk-fasta "1000000" "1m"))
 
   (define (mk-sumcol n suffix)
     (let ([f (build-path (find-system-path 'temp-dir) (string-append "sumcol-" suffix))])