(no commit message)

diff --git a/MagickCore/thread-private.h b/MagickCore/thread-private.h
index aebe3c95c295b1f908ee9facb70bcfcbf713ecbe..d14a7a9fc1f394969493fe39d5e3e8721e3bd85c 100644 (file)
--- a/MagickCore/thread-private.h
+++ b/MagickCore/thread-private.h
@@ -31,7 +31,7 @@ extern "C" {
 */
 #define magick_threads(source,destination,chunk,expression) \
   num_threads((expression) == 0 ? 1 : \
-    ((chunk) > (16*GetMagickResourceLimit(ThreadResource))) && \
+    ((chunk) > (32*GetMagickResourceLimit(ThreadResource))) && \
      ((GetImagePixelCacheType(source) == MemoryCache) || \
       (GetImagePixelCacheType(source) == MapCache)) && \
      ((GetImagePixelCacheType(destination) == MemoryCache) || \