update profile script

Author: rhpvorderman

benchmark_scripts/profile_igzipreader.py

@@ -5,10 +5,9 @@
 
 
 def main():
-    igzip.READ_BUFFER_SIZE = 32 * 1024
     with igzip.open(sys.argv[1], mode="rb") as gzip_h:
         while True:
-            block = gzip_h.read(32*1024)
+            block = gzip_h.read(128*1024)
             if block == b"":
                 return