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Add write stall stats to info command output #396

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merged 2 commits into from
Nov 19, 2021
Merged

Add write stall stats to info command output #396

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1d8bd63
Add write stall stats to info command output
caipengbo Nov 19, 2021
cd6098a
Corrected spelling errors
caipengbo Nov 19, 2021
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14 changes: 14 additions & 0 deletions src/server.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -599,6 +599,7 @@ void Server::GetRocksDBInfo(std::string *info) {
string_stream << "# RocksDB\r\n";
for (const auto &cf_handle : *storage_->GetCFHandles()) {
uint64_t estimate_keys, block_cache_usage, block_cache_pinned_usage, index_and_filter_cache_usage;
std::map<std::string, std::string> cf_stats_map;
db->GetIntProperty(cf_handle, "rocksdb.estimate-num-keys", &estimate_keys);
string_stream << "estimate_keys[" << cf_handle->GetName() << "]:" << estimate_keys << "\r\n";
db->GetIntProperty(cf_handle, "rocksdb.block-cache-usage", &block_cache_usage);
Expand All @@ -608,6 +609,19 @@ void Server::GetRocksDBInfo(std::string *info) {
db->GetIntProperty(cf_handle, "rocksdb.estimate-table-readers-mem", &index_and_filter_cache_usage);
string_stream << "index_and_filter_cache_usage:[" << cf_handle->GetName() << "]:" << index_and_filter_cache_usage
<< "\r\n";
db->GetMapProperty(cf_handle, rocksdb::DB::Properties::kCFStats, &cf_stats_map);
string_stream << "level0_file_limit_slowdown:[" << cf_handle->GetName() << "]:"
<< cf_stats_map["io_stalls.level0_slowdown"] << "\r\n";
string_stream << "level0_file_limit_stop:[" << cf_handle->GetName() << "]:"
<< cf_stats_map["io_stalls.level0_numfiles"] << "\r\n";
string_stream << "pending_compaction_bytes_slowdown:[" << cf_handle->GetName() << "]:"
<< cf_stats_map["io_stalls.slowdown_for_pending_compaction_bytes"] << "\r\n";
string_stream << "pending_compaction_bytes_stop:[" << cf_handle->GetName() << "]:"
<< cf_stats_map["io_stalls.stop_for_pending_compaction_bytes"] << "\r\n";
string_stream << "memtable_count_limit_slowdown:[" << cf_handle->GetName() << "]:"
<< cf_stats_map["io_stalls.memtable_slowdown"] << "\r\n";
string_stream << "memtable_count_limit_slowdown:[" << cf_handle->GetName() << "]:"
<< cf_stats_map["io_stalls.memtable_compaction"] << "\r\n";
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}
string_stream << "all_mem_tables:" << memtable_sizes << "\r\n";
string_stream << "cur_mem_tables:" << cur_memtable_sizes << "\r\n";
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