...

diff --git a/MagickCore/thread-private.h b/MagickCore/thread-private.h
index a4b757c78095d71f32b49eb786eee4597187c07d..bdd7be1fbfe68d7703ffdbd3279d520bd64b4146 100644 (file)
--- a/MagickCore/thread-private.h
+++ b/MagickCore/thread-private.h
@@ -38,7 +38,7 @@ extern "C" {
     ((GetImagePixelCacheType(destination) != MemoryCache) && \
      (GetImagePixelCacheType(destination) != MapCache)) ? \
     MagickMax(MagickMin(GetMagickResourceLimit(ThreadResource),2),1) : \
-    MagickMax(MagickMin((ssize_t) GetMagickResourceLimit(ThreadResource),(ssize_t) (chunk)/256),1))
+    MagickMax(MagickMin((ssize_t) GetMagickResourceLimit(ThreadResource),(ssize_t) (chunk)/64),1))
 
 #if defined(__clang__) || (__GNUC__ > 3) || ((__GNUC__ == 3) && (__GNUC_MINOR__ > 10))
 #define MagickCachePrefetch(address,mode,locality) \