journal: increase compression threshold for objects from 64 to 512

Apparently the perfomance price for compression is to steep to apply it
for all objects >= 64 and < 512 in size, as measured by Arjan Van De
Ven, hence increase the threshold to 512 which yields better results.

diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
index 59ad84e23b0eb54d31cd992410f4ae1555f6ffbf..20ca3f61cbd446bf10f8b6fbb318cc9b25160937 100644 (file)
--- a/src/journal/journal-file.c
+++ b/src/journal/journal-file.c
@@ -37,7 +37,7 @@
 
 #define DEFAULT_WINDOW_SIZE (128ULL*1024ULL*1024ULL)
 
-#define COMPRESSION_SIZE_THRESHOLD (64ULL)
+#define COMPRESSION_SIZE_THRESHOLD (512ULL)
 
 /* This is the minimum journal file size */
 #define JOURNAL_FILE_SIZE_MIN (64ULL*1024ULL)