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ircd::db: Improve universal compaction descent; flush on shutdown.

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This commit is contained in:
Jason Volk 2020-09-17 07:33:37 -07:00
parent 5762513c73
commit 60382c2371
1 changed files with 14 additions and 11 deletions
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25
ircd/db.cc
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@ -1385,7 +1385,7 @@ try
// This prevents the creation of additional SST files and lots of I/O on
// either DB open and close.
opts->avoid_flush_during_recovery = true;
opts->avoid_flush_during_shutdown = true;
opts->avoid_flush_during_shutdown = false;
// Setup env
opts->env = env.get();
@ -2082,7 +2082,7 @@ ircd::db::database::column::column(database &d,
//this->options.bottommost_compression_opts = this->options.compression_opts;
//TODO: descriptor / conf
static const auto write_buffer_blocks {2048L};
static const auto write_buffer_blocks {4096L};
static const long write_buffer_size_minmax[]
{
256_KiB, 8_MiB
@ -2131,17 +2131,20 @@ ircd::db::database::column::column(database &d,
rocksdb::CompactionPri::kOldestLargestSeqFirst;
this->options.level0_stop_writes_trigger = 64;
this->options.level0_slowdown_writes_trigger = 32;
this->options.level0_file_num_compaction_trigger = 8;
this->options.level0_slowdown_writes_trigger = 48;
this->options.level0_file_num_compaction_trigger =
this->options.compaction_style == rocksdb::kCompactionStyleUniversal? 8: 4;
// Universal compaction mode options
this->options.compaction_options_universal.size_ratio = 66;
this->options.compaction_options_universal.min_merge_width = 8;
this->options.compaction_options_universal.max_merge_width = 16;
this->options.compaction_options_universal.max_size_amplification_percent = 1000;
this->options.compaction_options_universal.compression_size_percent = -1;
this->options.compaction_options_universal.stop_style = rocksdb::kCompactionStopStyleTotalSize;
this->options.compaction_options_universal.allow_trivial_move = false;
auto &universal(this->options.compaction_options_universal);
//universal.stop_style = rocksdb::kCompactionStopStyleSimilarSize;
universal.stop_style = rocksdb::kCompactionStopStyleTotalSize;
universal.allow_trivial_move = false;
universal.compression_size_percent = -1;
universal.max_size_amplification_percent = 6667;
universal.size_ratio = 36;
universal.min_merge_width = 8;
universal.max_merge_width = 32;
// Level compaction mode options
this->options.num_levels = 7;