common/options: Set concurrent bluestore rocksdb compactions to 2

Signed-off-by: Mark Nelson <mnelson@redhat.com>
(cherry picked from commit 26dc5189e73a1f5a22f89ee67eef5430ef660b5d)

diff --git a/src/common/options.cc b/src/common/options.cc
index 0d71c0f6df13c8f4223ceeb9999ca7d0bac81e3f..63d31e1b84594183bcf51a3e06c16beb46f633c6 100644 (file)
--- a/src/common/options.cc
+++ b/src/common/options.cc
@@ -3691,7 +3691,7 @@ std::vector<Option> get_global_options() {
     .set_description("Max transactions with deferred writes that can accumulate before we force flush deferred writes"),
 
     Option("bluestore_rocksdb_options", Option::TYPE_STR, Option::LEVEL_ADVANCED)
-    .set_default("compression=kNoCompression,max_write_buffer_number=4,min_write_buffer_number_to_merge=1,recycle_log_file_num=4,write_buffer_size=268435456,writable_file_max_buffer_size=0,compaction_readahead_size=2097152")
+    .set_default("compression=kNoCompression,max_write_buffer_number=4,min_write_buffer_number_to_merge=1,recycle_log_file_num=4,write_buffer_size=268435456,writable_file_max_buffer_size=0,compaction_readahead_size=2097152,max_background_compactions=2")
     .set_description("Rocksdb options"),
 
     Option("bluestore_fsck_on_mount", Option::TYPE_BOOL, Option::LEVEL_DEV)