compressor: Set the Zstd default compression level to 1

The default compression level of 5 for Zstandard is too high for the majority
of use cases since it requires too many CPU cycles.  This patch switches the
default to 1.

Fixes: https://tracker.ceph.com/issues/44724
Signed-off-by: Bryan Stillwell <bstillwell@godaddy.com>
(cherry picked from commit caf74d533b0c6c9e6fc5b1463ae2c3be1103d7f3)

diff --git a/src/common/options.cc b/src/common/options.cc
index 46efcc6a2fbad170278427aa609869052d5d5b16..70ace312853ada957d312b1094d681015ebf8753 100644 (file)
--- a/src/common/options.cc
+++ b/src/common/options.cc
@@ -786,7 +786,7 @@ std::vector<Option> get_global_options() {
     .set_description("Zlib compression level to use"),
 
     Option("compressor_zstd_level", Option::TYPE_INT, Option::LEVEL_ADVANCED)
-    .set_default(5)
+    .set_default(1)
     .set_description("Zstd compression level to use"),
 
     Option("qat_compressor_enabled", Option::TYPE_BOOL, Option::LEVEL_ADVANCED)