From c97b3097024081df0e955171363f8e727b115440 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sat, 19 Sep 2015 16:29:33 -0500 Subject: [PATCH] xpress_compress.c: adjust parameters for slightly stronger compression --- src/xpress_compress.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/src/xpress_compress.c b/src/xpress_compress.c index 776de7cd..5c3249d0 100644 --- a/src/xpress_compress.c +++ b/src/xpress_compress.c @@ -1090,12 +1090,12 @@ xpress_create_compressor(size_t max_bufsize, unsigned compression_level, if (compression_level < 30) { c->impl = xpress_compress_greedy; - c->max_search_depth = (compression_level * 24) / 16; - c->nice_match_length = (compression_level * 48) / 16; + c->max_search_depth = (compression_level * 30) / 16; + c->nice_match_length = (compression_level * 60) / 16; } else { c->impl = xpress_compress_lazy; - c->max_search_depth = (compression_level * 24) / 32; - c->nice_match_length = (compression_level * 48) / 32; + c->max_search_depth = (compression_level * 30) / 32; + c->nice_match_length = (compression_level * 60) / 32; /* xpress_compress_lazy() needs max_search_depth >= 2 * because it halves the max_search_depth when @@ -1122,8 +1122,8 @@ xpress_create_compressor(size_t max_bufsize, unsigned compression_level, &c->match_cache[max_bufsize * CACHE_RESERVE_PER_POS]; c->impl = xpress_compress_near_optimal; - c->max_search_depth = (compression_level * 32) / 100; - c->nice_match_length = (compression_level * 50) / 100; + c->max_search_depth = (compression_level * 28) / 100; + c->nice_match_length = (compression_level * 56) / 100; c->num_optim_passes = compression_level / 40; } #endif /* SUPPORT_NEAR_OPTIMAL_PARSING */ -- 2.43.0