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-rw-r--r--src/H5Adense.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/H5Adense.c b/src/H5Adense.c
index e9eeafa..0418427 100644
--- a/src/H5Adense.c
+++ b/src/H5Adense.c
@@ -48,6 +48,11 @@
/****************/
/* Fractal heap creation parameters for "dense" attribute storage */
+/* (Note that these parameters have been tuned so that the resulting heap ID
+ * is exactly 8 bytes. This is an efficient size and is also the same as
+ * the size of the shared message heap IDs, think carefully before
+ * changing it. -QAK)
+ */
#define H5A_FHEAP_MAN_WIDTH 4
#define H5A_FHEAP_MAN_START_BLOCK_SIZE 512
#define H5A_FHEAP_MAN_MAX_DIRECT_SIZE (64 * 1024)