Bump the ros3 VFD cache to 16 MiB (HDFGroup#3759)

jhendersonHDF · Oct 24, 2023 · 5093382 · 5093382
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commit 5093382
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diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
@@ -135,13 +135,13 @@ New Features
 
     Library:
     --------
-    - Added a simple cache to the read-only S3 VFD
+    - Added a simple cache to the read-only S3 (ros3) VFD
 
       The read-only S3 VFD now caches the first N bytes of a file stored
       in S3 to avoid a lot of small I/O operations when opening files.
       This cache is per-file and created when the file is opened.
 
-      N is currently 4kiB or the size of the file, whichever is smaller.
+      N is currently 16 MiB or the size of the file, whichever is smaller.
 
       Addresses GitHub issue #3381
 

diff --git a/src/H5FDros3.c b/src/H5FDros3.c
@@ -44,7 +44,7 @@
 #define ROS3_STATS 0
 
 /* Max size of the cache, in bytes */
-#define ROS3_MAX_CACHE_SIZE 4096
+#define ROS3_MAX_CACHE_SIZE 16777216
 
 /* The driver identification number, initialized at runtime
  */