The image build time of `-Efragments` will be greatly reduced.
Processors: Intel(R) Xeon(R) Platinum 8163 CPU @ 2.50GHz (96 cores)
Memory: 384 GiB
Mkfs options: -zlzma,6 -Efragments -C1048576
__________________________________________________________________________________
|______ Testset _____|________|_______ Vanilla _________|_________ After
__________|
| CoreOS | Size |__ 660484096 (630 MiB) __|___ 660475904 (630
MiB) __|
|____________________|_ Time _|_______ 4m12.249s _______|_______ 1m49.828s
________|
| Fedora KIWI | Size |_ 2554892288 (2437 MiB) _|__ 2554793984 (2436
MiB) _|
|____________________|_ Time _|_______ 19m8.141s _______|_______ 6m22.378s
________|
It is now preferred to use `-Efragments` over `-Eall-fragments`, since
placing all data in the packed inode (`-Eall-fragments`) could introduce
some performance penalty.
Signed-off-by: Gao Xiang <hsiang...@linux.alibaba.com>
---
lib/fragments.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/fragments.c b/lib/fragments.c
index ce079af..1f24f70 100644
--- a/lib/fragments.c
+++ b/lib/fragments.c
@@ -31,7 +31,7 @@ struct erofs_fragmentitem {
};
#define EROFS_FRAGMENT_INMEM_SZ_MAX (256 * 1024)
-#define EROFS_TOF_HASHLEN 16
+#define EROFS_TOF_HASHLEN 64
#define FRAGMENT_HASHSIZE 65536
#define FRAGMENT_HASH(c) ((c) & (FRAGMENT_HASHSIZE - 1))
--
2.43.5
