From 63904434eb87183ea353914b07cd8dc53f40ddac Mon Sep 17 00:00:00 2001
From: Andrew Kryczka <andrewkr@fb.com>
Date: Thu, 12 Jul 2018 15:55:07 -0700
Subject: [PATCH] db_bench periodically dump stats to info log (#4109)

Summary:
give control of how often stats are printed, including jemalloc stats if enabled. Previously the default was 10 minutes so we'd only see updated stats for very long benchmark runs.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4109

Differential Revision: D8796444

Pulled By: ajkr

fbshipit-source-id: fd7902fe3f105fae89322c4ab63316bba4a2b15e
---
 tools/db_bench_tool.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/db_bench_tool.cc b/tools/db_bench_tool.cc
index d12104e86..5915692f8 100644
--- a/tools/db_bench_tool.cc
+++ b/tools/db_bench_tool.cc
@@ -1028,6 +1028,8 @@ DEFINE_bool(identity_as_first_hash, false, "the first hash function of cuckoo "
             "table becomes an identity function. This is only valid when key "
             "is 8 bytes");
 DEFINE_bool(dump_malloc_stats, true, "Dump malloc stats in LOG ");
+DEFINE_uint32(stats_dump_period_sec, rocksdb::Options().stats_dump_period_sec,
+              "Gap between printing stats to log in seconds");
 
 enum RepFactory {
   kSkipList,
@@ -3367,6 +3369,7 @@ void VerifyDBFromDB(std::string& truth_db_name) {
     options.wal_dir = FLAGS_wal_dir;
     options.create_if_missing = !FLAGS_use_existing_db;
     options.dump_malloc_stats = FLAGS_dump_malloc_stats;
+    options.stats_dump_period_sec = FLAGS_stats_dump_period_sec;
 
     options.compression_opts.level = FLAGS_compression_level;
     options.compression_opts.max_dict_bytes = FLAGS_compression_max_dict_bytes;