document index type 1 better

2005-07-08 21:55:21 +00:00
parent 86bcdeb915
commit a2c437b31a
1 changed files with 3 additions and 1 deletions
--- a/4
+++ b/4
@@ -34,7 +34,9 @@ All integers are stored LITTLE ENDIAN.
  struct {
    uint32_t index_type;  /* 0 == sorted array of pointers,
 			     1 == sorted array of (pointer,record number) tuples,
-			          faster but twice as large
+			          faster but twice as large; this is actually saved
+				  as two arrays, one for the pointers and one for
+				  the numbers, for cache performance reasons.
 			     rest reserved */
    uint32_t next;        /* offset of next index */
    /* for index_type==0: */