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Make zlib compression level configurable, and change default.

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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
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2
http-push.c
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@ -492,7 +492,7 @@ static void start_put(struct transfer_request *request)
/* Set it up */
memset(&stream, 0, sizeof(stream));
deflateInit(&stream, Z_BEST_COMPRESSION);
deflateInit(&stream, zlib_compression_level);
size = deflateBound(&stream, len + hdrlen);
request->buffer.buffer = xmalloc(size);