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ircd::db: Checkpoint options default package.

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This commit is contained in:
Jason Volk 2018-12-18 17:36:51 -08:00
parent e1fd3f556b
commit 5d1f17b26e
1 changed files with 19 additions and 6 deletions
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25
ircd/db.cc
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@ -1059,10 +1059,20 @@ try
// TODO: Check if these values can be increased; RocksDB may keep
// thread_local state preventing values > 1.
opts->max_background_jobs = 1;
opts->max_background_jobs = 16;
opts->max_background_flushes = 1;
opts->max_background_compactions = 1;
opts->max_total_wal_size = 16_MiB; //TODO: conf
opts->db_write_buffer_size = 16_MiB; //TODO: conf
// For the write-side of a compaction process: writes will be of approx
// this size. The compaction process is composing a buffer of this size
// between those writes. Too large a buffer will hog the CPU and starve
// other ircd::ctx's. Too small a buffer will be inefficient.
opts->writable_file_max_buffer_size = 2_MiB; //TODO: conf
// For the read-side of the compaction process.
opts->compaction_readahead_size = 4_MiB; //TODO: conf
// MUST be 1 (no subcompactions) or rocksdb spawns internal std::thread.
@ -1092,7 +1102,7 @@ try
false;
// Use the determined direct io value for writes as well.
opts->use_direct_io_for_flush_and_compaction = opts->use_direct_reads;
//opts->use_direct_io_for_flush_and_compaction = opts->use_direct_reads;
// Doesn't appear to be in effect when direct io is used. Not supported by
// all filesystems so disabled for now.
@ -1739,9 +1749,12 @@ ircd::db::database::column::column(database &d,
this->options.num_levels = 7;
this->options.write_buffer_size = 512_KiB;
this->options.max_write_buffer_number = 2;
this->options.min_write_buffer_number_to_merge = 1;
this->options.max_write_buffer_number_to_maintain = 0;
this->options.level0_file_num_compaction_trigger = 3;
this->options.target_file_size_base = 62_MiB;
this->options.target_file_size_multiplier = 1;
this->options.target_file_size_base = 30_MiB;
this->options.target_file_size_multiplier = 2;
this->options.max_bytes_for_level_base = 64_MiB;
this->options.max_bytes_for_level_multiplier = 2;
@ -1754,7 +1767,6 @@ ircd::db::database::column::column(database &d,
table_opts.index_type = rocksdb::BlockBasedTableOptions::kTwoLevelIndexSearch;
table_opts.partition_filters = true;
table_opts.use_delta_encoding = true;
table_opts.enable_index_compression = false;
table_opts.read_amp_bytes_per_bit = 8;
// Specify that index blocks should use the cache. If not, they will be
@ -1765,6 +1777,7 @@ ircd::db::database::column::column(database &d,
table_opts.cache_index_and_filter_blocks_with_high_priority = false;
table_opts.pin_top_level_index_and_filter = false;
table_opts.pin_l0_filter_and_index_blocks_in_cache = false;
table_opts.enable_index_compression = false;
// Setup the block size
table_opts.block_size = this->descriptor->block_size;
@ -9494,7 +9507,7 @@ ircd::db::compact(column &column,
};
rocksdb::CompactionOptions opts;
opts.output_file_size_limit = 1_GiB; //TODO: conf
opts.output_file_size_limit = 2_GiB; //TODO: conf
// RocksDB sez that setting this to Disable means that the column's
// compression options are read instead. If we don't set this here,