diff --git a/extra/benchmark/base64/base64.factor b/extra/benchmark/base64/base64.factor
index f6e5f7ca39..350a29f865 100644
--- a/extra/benchmark/base64/base64.factor
+++ b/extra/benchmark/base64/base64.factor
@@ -5,7 +5,7 @@ IN: benchmark.base64
 
 : base64-benchmark ( -- )
     65535 [ 255 bitand ] "" map-as
-    100 [ >base64 base64> ] times
+    20 [ >base64 base64> ] times
     drop ;
 
 MAIN: base64-benchmark
diff --git a/extra/benchmark/beust1/beust1.factor b/extra/benchmark/beust1/beust1.factor
index 9849ac2dbe..d94c1d1335 100644
--- a/extra/benchmark/beust1/beust1.factor
+++ b/extra/benchmark/beust1/beust1.factor
@@ -8,7 +8,7 @@ IN: benchmark.beust1
     1 [a,b] [ number>string all-unique? ] count ; inline
 
 : beust ( -- )
-    10000000 count-numbers
+    2000000 count-numbers
     number>string " unique numbers." append print ;
 
 MAIN: beust
diff --git a/extra/benchmark/beust2/beust2.factor b/extra/benchmark/beust2/beust2.factor
index f96dc77961..d269ef3503 100755
--- a/extra/benchmark/beust2/beust2.factor
+++ b/extra/benchmark/beust2/beust2.factor
@@ -34,7 +34,7 @@ IN: benchmark.beust2
 
 :: beust ( -- )
     [let | i! [ 0 ] |
-        10000000000 [ i 1+ i! ] count-numbers
+        5000000000 [ i 1+ i! ] count-numbers
         i number>string " unique numbers." append print
     ] ;
 
diff --git a/extra/benchmark/fib6/fib6.factor b/extra/benchmark/fib6/fib6.factor
index 64d1b6c533..f81b6a21a2 100755
--- a/extra/benchmark/fib6/fib6.factor
+++ b/extra/benchmark/fib6/fib6.factor
@@ -9,6 +9,6 @@ USING: math kernel alien ;
     ] alien-callback
     "int" { "int" } "cdecl" alien-indirect ;
 
-: fib-main ( -- ) 34 fib drop ;
+: fib-main ( -- ) 32 fib drop ;
 
 MAIN: fib-main
diff --git a/extra/benchmark/md5/md5.factor b/extra/benchmark/md5/md5.factor
index 5030cb6904..de60049c84 100644
--- a/extra/benchmark/md5/md5.factor
+++ b/extra/benchmark/md5/md5.factor
@@ -1,7 +1,7 @@
-USING: checksums checksums.md5 io.files kernel ;
+USING: checksums checksums.md5 sequences byte-arrays kernel ;
 IN: benchmark.md5
 
 : md5-file ( -- )
-    "vocab:mime/multipart/multipart-tests.factor" md5 checksum-file drop ;
+    2000000 iota >byte-array md5 checksum-bytes drop ;
 
 MAIN: md5-file
diff --git a/extra/benchmark/random/random.factor b/extra/benchmark/random/random.factor
index d2eb4cdab5..4eab7c1669 100755
--- a/extra/benchmark/random/random.factor
+++ b/extra/benchmark/random/random.factor
@@ -11,6 +11,6 @@ IN: benchmark.random
     ] with-file-writer ;
 
 : random-main ( -- )
-    1000000 write-random-numbers ;
+    300000 write-random-numbers ;
 
 MAIN: random-main
diff --git a/extra/benchmark/sha1/sha1.factor b/extra/benchmark/sha1/sha1.factor
index 8e19ba9a8f..c1a7af2966 100644
--- a/extra/benchmark/sha1/sha1.factor
+++ b/extra/benchmark/sha1/sha1.factor
@@ -1,7 +1,7 @@
-USING: checksums checksums.sha1 io.files kernel ;
+USING: checksums checksums.sha1 sequences byte-arrays kernel ;
 IN: benchmark.sha1
 
 : sha1-file ( -- )
-    "vocab:mime/multipart/multipart-tests.factor" sha1 checksum-file drop ;
+    2000000 iota >byte-array sha1 checksum-bytes drop ;
 
 MAIN: sha1-file
diff --git a/extra/benchmark/sum-file/sum-file.factor b/extra/benchmark/sum-file/sum-file.factor
index bb7aebba62..b1f27830ee 100644
--- a/extra/benchmark/sum-file/sum-file.factor
+++ b/extra/benchmark/sum-file/sum-file.factor
@@ -9,6 +9,6 @@ IN: benchmark.sum-file
     ascii [ 0 sum-file-loop ] with-file-reader . ;
 
 : sum-file-main ( -- )
-    random-numbers-path sum-file ;
+    5 [ random-numbers-path sum-file ] times ;
 
 MAIN: sum-file-main