diff options
| author | Tor Vic <torvic9@mailbox.org> | 2020-12-16 13:58:02 +0100 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2021-02-12 05:11:19 +0900 |
| commit | db4632c65eb505410f2e6be9c4d50226c973a129 (patch) | |
| tree | d99439e7c9069ffaf16bdcbe223c01bff8a1bbf5 | |
| parent | fa1e160b08e8ceabecbd5b42d8268278197c3e67 (diff) | |
Makefile: use smaller dictionary size for xz module compression
By default, xz without parameters uses a dictionary size of 8 MB.
However, most modules are much smaller than that.
The xz manpage states that 'increasing dictionary size usually improves
compression ratio, but a dictionary bigger than the uncompressed file
is waste of memory'.
Use a dictionary size of 2 MB for module compression, resulting in
slightly higher compression speed while still maintaining a good
compression ratio.
Signed-off-by: Tor Vic <torvic9@mailbox.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| -rw-r--r-- | Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -1053,7 +1053,7 @@ ifdef CONFIG_MODULE_COMPRESS mod_compress_cmd = $(KGZIP) -n -f endif # CONFIG_MODULE_COMPRESS_GZIP ifdef CONFIG_MODULE_COMPRESS_XZ - mod_compress_cmd = $(XZ) -f + mod_compress_cmd = $(XZ) --lzma2=dict=2MiB -f endif # CONFIG_MODULE_COMPRESS_XZ endif # CONFIG_MODULE_COMPRESS export mod_compress_cmd |