From: "Jörn Engel" <joern@wohnheim.fh-wedel.de>
To: Marcelo Tosatti <marcelo@hera.kernel.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] 2.4.21 zlib changes #1 memlevel
Date: Sat, 14 Jun 2003 15:51:33 +0200 [thread overview]
Message-ID: <20030614135133.GH15099@wohnheim.fh-wedel.de> (raw)
In-Reply-To: <20030614135026.GG15099@wohnheim.fh-wedel.de>
Reduce MAX_MEM_LEVEL to 8. This reduces zlib memory consumption by
128k (from ~400k to ~270k) at the theoretical cost of worse
compression. No code currently in the kernel actually uses the better
compression, so the practical cost is zero.
Jörn
--
A victorious army first wins and then seeks battle.
-- Sun Tzu
--- linux-2.4.20/include/linux/zconf.h~zlib_memlevel 2002-11-29 00:53:15.000000000 +0100
+++ linux-2.4.20/include/linux/zconf.h 2003-06-10 17:01:16.000000000 +0200
@@ -35,7 +35,7 @@
/* Maximum value for memLevel in deflateInit2 */
#ifndef MAX_MEM_LEVEL
-# define MAX_MEM_LEVEL 9
+# define MAX_MEM_LEVEL 8
#endif
/* Maximum value for windowBits in deflateInit2 and inflateInit2.
prev parent reply other threads:[~2003-06-14 13:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-14 13:47 [PATCH] 2.4.21 zlib merge #1 turboc Jörn Engel
2003-06-14 13:48 ` [PATCH] 2.4.21 zlib merge #2 return Jörn Engel
2003-06-14 13:49 ` [PATCH] 2.4.21 zlib merge #3 inffast Jörn Engel
2003-06-14 13:50 ` [PATCH] 2.4.21 zlib merge #4 windowBits Jörn Engel
2003-06-14 13:51 ` Jörn Engel [this message]
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