1 files changed, 3 insertions, 0 deletions
diff --git a/src/sum.c b/src/sum.c
index d0d160f7b..4b98e5935 100644
--- a/src/sum.c
+++ b/src/sum.c
@@ -26,6 +26,7 @@
 #include <getopt.h>
 #include "system.h"
 #include "error.h"
+#include "fadvise.h"
 #include "human.h"
 #include "safe-read.h"
 #include "xfreopen.h"
@@ -110,6 +111,8 @@ bsd_sum_file (const char *file, int print_name)
         }
     }
 
+  fadvise (fp, FADVISE_SEQUENTIAL);
+
   while ((ch = getc (fp)) != EOF)
     {
       total_bytes++;