diff --git a/benchtests/bench-strstr.c b/benchtests/bench-strstr.c
index a31294e3c96d80a4fd61bb5b423a825fe54d3227..00cb779ab39ad01614896458bdcc7ff0d012c618 100644
--- a/benchtests/bench-strstr.c
+++ b/benchtests/bench-strstr.c
@@ -16,6 +16,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define MIN_PAGE_SIZE 131072
 #define TEST_MAIN
 #define TEST_NAME "strstr"
 #include "bench-string.h"
@@ -26,6 +27,30 @@
 #define __strnlen strnlen
 #include "../string/strstr.c"
 
+static const char input[] =
+"This manual is written with the assumption that you are at least "
+"somewhat familiar with the C programming language and basic programming "
+"concepts.  Specifically, familiarity with ISO standard C (*note ISO "
+"C::), rather than â€œtraditionalâ€ pre-ISO C dialects, is assumed.\n"
+
+"   The GNU C Library includes several â€œheader filesâ€, each of which "
+"provides definitions and declarations for a group of related facilities; "
+"this information is used by the C compiler when processing your program. "
+"For example, the header file â€˜stdio.hâ€™ declares facilities for "
+"performing input and output, and the header file â€˜string.hâ€™ declares "
+"string processing utilities.  The organization of this manual generally "
+"follows the same division as the header files.\n"
+
+"   If you are reading this manual for the first time, you should read "
+"all of the introductory material and skim the remaining chapters.  There "
+"are a _lot_ of functions in the GNU C Library and itâ€™s not realistic to "
+"expect that you will be able to remember exactly _how_ to use each and "
+"every one of them.  Itâ€™s more important to become generally familiar "
+"with the kinds of facilities that the library provides, so that when you "
+"are writing your programs you can recognize _when_ to make use of "
+"library functions, and _where_ in this manual you can find more specific "
+"information about them.\n";
+
 
 static char *
 stupid_strstr (const char *s1, const char *s2)
@@ -60,19 +85,25 @@ IMPL (strstr, 1)
 static void
 do_one_test (impl_t *impl, const char *s1, const char *s2, char *exp_result)
 {
-  size_t i, iters = INNER_LOOP_ITERS;
+  size_t i, iters = INNER_LOOP_ITERS * 2;
   timing_t start, stop, cur;
+  char *res;
 
   TIMING_NOW (start);
   for (i = 0; i < iters; ++i)
-    {
-      CALL (impl, s1, s2);
-    }
+    res = CALL (impl, s1, s2);
   TIMING_NOW (stop);
 
   TIMING_DIFF (cur, start, stop);
 
   TIMING_PRINT_MEAN ((double) cur, (double) iters);
+
+  if (res != exp_result)
+    {
+      error (0, 0, "Wrong result in function %s %s %s", impl->name,
+	     res, exp_result);
+      ret = 1;
+    }
 }
 
 
@@ -83,36 +114,42 @@ do_test (size_t align1, size_t align2, size_t len1, size_t len2,
   char *s1 = (char *) (buf1 + align1);
   char *s2 = (char *) (buf2 + align2);
 
-  static const char d[] = "1234567890abcdef";
-#define dl (sizeof (d) - 1)
-  char *ss2 = s2;
-  for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
-    {
-      size_t t = l > dl ? dl : l;
-      ss2 = mempcpy (ss2, d, t);
-    }
-  s2[len2] = '\0';
+  size_t size = sizeof (input) - 1;
+  size_t pos = (len1 + len2) % size;
 
-  if (fail)
+  char *ss2 = s2;
+  for (size_t l = len2; l > 0; l = l > size ? l - size : 0)
     {
-      char *ss1 = s1;
-      for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0)
+      size_t t = l > size ? size : l;
+      if (pos + t <= size)
+	ss2 = mempcpy (ss2, input + pos, t);
+      else
 	{
-	  size_t t = l > dl ? dl : l;
-	  memcpy (ss1, d, t);
-	  ++ss1[len2 > 7 ? 7 : len2 - 1];
-	  ss1 += t;
+	  ss2 = mempcpy (ss2, input + pos, size - pos);
+	  ss2 = mempcpy (ss2, input, t - (size - pos));
 	}
     }
-  else
+  s2[len2] = '\0';
+
+  char *ss1 = s1;
+  for (size_t l = len1; l > 0; l = l > size ? l - size : 0)
     {
-      memset (s1, '0', len1);
-      memcpy (s1 + len1 - len2, s2, len2);
+      size_t t = l > size ? size : l;
+      memcpy (ss1, input, t);
+      ss1 += t;
     }
+
+  if (!fail)
+    memcpy (s1 + len1 - len2, s2, len2);
   s1[len1] = '\0';
 
-  printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:",
-	  len1, len2, align1, align2, fail ? "fail" : "found");
+  /* Remove any accidental matches except for the last if !fail.  */
+  for (ss1 = stupid_strstr (s1, s2); ss1; ss1 = stupid_strstr (ss1 + 1, s2))
+    if (fail || ss1 != s1 + len1 - len2)
+      ++ss1[len2 / 2];
+
+  printf ("Length %4zd/%3zd, alignment %2zd/%2zd, %s:",
+	  len1, len2, align1, align2, fail ? "fail " : "found");
 
   FOR_EACH_IMPL (impl, 0)
     do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2);
@@ -130,48 +167,19 @@ test_main (void)
     printf ("\t%s", impl->name);
   putchar ('\n');
 
-  for (size_t klen = 2; klen < 32; ++klen)
-    for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen)
+  for (size_t hlen = 64; hlen <= 256; hlen += 32)
+    for (size_t klen = 1; klen <= 16; klen++)
       {
-	do_test (0, 0, hlen, klen, 0);
-	do_test (0, 0, hlen, klen, 1);
-	do_test (0, 3, hlen, klen, 0);
-	do_test (0, 3, hlen, klen, 1);
-	do_test (0, 9, hlen, klen, 0);
+	do_test (1, 3, hlen, klen, 0);
 	do_test (0, 9, hlen, klen, 1);
-	do_test (0, 15, hlen, klen, 0);
-	do_test (0, 15, hlen, klen, 1);
-
-	do_test (3, 0, hlen, klen, 0);
-	do_test (3, 0, hlen, klen, 1);
-	do_test (3, 3, hlen, klen, 0);
-	do_test (3, 3, hlen, klen, 1);
-	do_test (3, 9, hlen, klen, 0);
-	do_test (3, 9, hlen, klen, 1);
-	do_test (3, 15, hlen, klen, 0);
-	do_test (3, 15, hlen, klen, 1);
-
-	do_test (9, 0, hlen, klen, 0);
-	do_test (9, 0, hlen, klen, 1);
-	do_test (9, 3, hlen, klen, 0);
-	do_test (9, 3, hlen, klen, 1);
-	do_test (9, 9, hlen, klen, 0);
-	do_test (9, 9, hlen, klen, 1);
-	do_test (9, 15, hlen, klen, 0);
-	do_test (9, 15, hlen, klen, 1);
-
-	do_test (15, 0, hlen, klen, 0);
-	do_test (15, 0, hlen, klen, 1);
-	do_test (15, 3, hlen, klen, 0);
-	do_test (15, 3, hlen, klen, 1);
-	do_test (15, 9, hlen, klen, 0);
-	do_test (15, 9, hlen, klen, 1);
-	do_test (15, 15, hlen, klen, 0);
-	do_test (15, 15, hlen, klen, 1);
       }
 
-  do_test (0, 0, page_size - 1, 16, 0);
-  do_test (0, 0, page_size - 1, 16, 1);
+  for (size_t hlen = 256; hlen <= 65536; hlen *= 2)
+    for (size_t klen = 16; klen <= 256; klen *= 2)
+      {
+	do_test (1, 11, hlen, klen, 0);
+	do_test (14, 5, hlen, klen, 1);
+      }
 
   return ret;
 }
