common/config_opts.h: compaction readahead for bluestore/rocksdb

Signed-off-by: Mark Nelson <mnelson@redhat.com>

diff --git a/src/common/config_opts.h b/src/common/config_opts.h
index 18dd5e5d2957e5a55073807bf1b2389a7c2d7894..976f06418dc8a0df8b0211ecc37e8f2e4576c6b5 100644 (file)
--- a/src/common/config_opts.h
+++ b/src/common/config_opts.h
@@ -1124,7 +1124,7 @@ OPTION(bluestore_allocator, OPT_STR, "bitmap")     // stupid | bitmap
 OPTION(bluestore_freelist_blocks_per_key, OPT_INT, 128)
 OPTION(bluestore_bitmapallocator_blocks_per_zone, OPT_INT, 1024) // must be power of 2 aligned, e.g., 512, 1024, 2048...
 OPTION(bluestore_bitmapallocator_span_size, OPT_INT, 1024) // must be power of 2 aligned, e.g., 512, 1024, 2048...
-OPTION(bluestore_rocksdb_options, OPT_STR, "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")
+OPTION(bluestore_rocksdb_options, OPT_STR, "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")
 OPTION(bluestore_fsck_on_mount, OPT_BOOL, false)
 OPTION(bluestore_fsck_on_mount_deep, OPT_BOOL, true)
 OPTION(bluestore_fsck_on_umount, OPT_BOOL, false)