Make all three gzip parameter varnish parameters: gzip_level,

gzip_window and gzip_memlevel.

Still same pessimal values though.

bin/varnishd/cache_gzip.c

@@ -202,8 +202,8 @@ VGZ_NewGzip(struct sess *sp, const char *id)
 	i = deflateInit2(&vg->vz,
 	    params->gzip_level,		/* Level */
 	    Z_DEFLATED,			/* Method */
-	    16 + 8,			/* Window bits (16=gzip + 15) */
-	    1,				/* memLevel */
+	    16 + params->gzip_window,	/* Window bits (16=gzip + 15) */
+	    params->gzip_memlevel,	/* memLevel */
 	    Z_DEFAULT_STRATEGY);
 	if (i != Z_OK)
 		printf("deflateInit2() = %d\n", i);

bin/varnishd/heritage.h

@@ -204,6 +204,8 @@ struct params {
 	unsigned		gzip_stack_buffer;
 	unsigned		gzip_tmp_space;
 	unsigned		gzip_level;
+	unsigned		gzip_window;
+	unsigned		gzip_memlevel;
 
 	double			critbit_cooloff;
 

bin/varnishd/mgt_param.c

@@ -887,6 +887,14 @@ static const struct parspec input_parspec[] = {
 		"Gzip compression level: 0=debug, 1=fast, 9=best",
 		0,
 		"6", ""},
+	{ "gzip_window", tweak_uint, &master.gzip_window, 8, 15,
+		"Gzip window size 8=least, 15=most compression",
+		0,
+		"8", ""},
+	{ "gzip_window", tweak_uint, &master.gzip_memlevel, 1, 9,
+		"Gzip memory level 1=least, 9=most compression",
+		0,
+		"1", ""},
 	{ "gzip_stack_buffer", tweak_uint, &master.gzip_stack_buffer,
 	        2048, UINT_MAX,
 		"Size of stack buffer used for gzip processing.\n"