Make zlib compression level configurable, and change default.

With the change in default, "git add ." on kernel dir is about
twice as fast as before, with only minimal (0.5%) change in
object size. The speed difference is even more noticeable
when committing large files, which is now up to 8 times faster.

The configurability is through setting core.compression = [-1..9]
which maps to the zlib constants; -1 is the default, 0 is no
compression, and 1..9 are various speed/size tradeoffs, 9
being slowest.

Signed-off-by: Joachim B Haga (cjhaga@fys.uio.no)
Acked-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Joachim B Haga
2006-07-03 22:11:47 +02:00
committed by Junio C Hamano
parent 8fced61cbc
commit 12f6c308d5
8 changed files with 23 additions and 5 deletions

View File

@ -20,6 +20,7 @@ int repository_format_version = 0;
char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
int shared_repository = PERM_UMASK;
const char *apply_default_whitespace = NULL;
int zlib_compression_level = Z_DEFAULT_COMPRESSION;
static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
*git_graft_file;