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Add memtable_insert_with_hint_prefix_size option to db_bench

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Summary:
Add memtable_insert_with_hint_prefix_size option to db_bench
Closes https://github.com/facebook/rocksdb/pull/1604

Differential Revision: D4260549

Pulled By: yiwu-arbug

fbshipit-source-id: cee5ef7
This commit is contained in:
Yi Wu 2016-12-01 16:50:59 -08:00 committed by Facebook Github Bot
parent 4a21b1402c
commit 56281f3a97
1 changed files with 8 additions and 0 deletions
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8
tools/db_bench_tool.cc
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@ -836,6 +836,9 @@ DEFINE_int32(prefix_size, 0, "control the prefix size for HashSkipList and "
DEFINE_int64(keys_per_prefix, 0, "control average number of keys generated "
"per prefix, 0 means no special handling of the prefix, "
"i.e. use the prefix comes with the generated random number.");
DEFINE_int32(memtable_insert_with_hint_prefix_size, 0,
"If non-zero, enable "
"memtable insert with hint with the given prefix size.");
DEFINE_bool(enable_io_prio, false, "Lower the background flush/compaction "
"threads' IO priority");
DEFINE_bool(identity_as_first_hash, false, "the first hash function of cuckoo "
@ -2741,6 +2744,11 @@ class Benchmark {
}
options.memtable_huge_page_size = FLAGS_memtable_use_huge_page ? 2048 : 0;
options.memtable_prefix_bloom_size_ratio = FLAGS_memtable_bloom_size_ratio;
if (FLAGS_memtable_insert_with_hint_prefix_size > 0) {
options.memtable_insert_with_hint_prefix_extractor.reset(
NewCappedPrefixTransform(
FLAGS_memtable_insert_with_hint_prefix_size));
}
options.bloom_locality = FLAGS_bloom_locality;
options.max_file_opening_threads = FLAGS_file_opening_threads;
options.new_table_reader_for_compaction_inputs =