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enable plain table in db_bench

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Summary: as title

Test Plan: ran db_bench to gather stats

Reviewers: haobo, sdong

Reviewed By: haobo

CC: leveldb

Differential Revision: https://reviews.facebook.net/D16059
This commit is contained in:
Lei Jin 2014-02-12 10:41:55 -08:00
parent 265150cb49
commit 28b7f7faa8
1 changed files with 27 additions and 6 deletions
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33
db/db_bench.cc
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@ -483,7 +483,8 @@ static bool ValidatePrefixSize(const char* flagname, int32_t value) {
}
return true;
}
DEFINE_int32(prefix_size, 0, "Control the prefix size for HashSkipList");
DEFINE_int32(prefix_size, 0, "control the prefix size for HashSkipList and "
"plain table");
enum RepFactory {
kSkipList,
@ -505,6 +506,8 @@ enum RepFactory StringToRepFactory(const char* ctype) {
}
static enum RepFactory FLAGS_rep_factory;
DEFINE_string(memtablerep, "skip_list", "");
DEFINE_bool(use_plain_table, false, "if use plain table "
"instead of block-based table format");
DEFINE_string(merge_operator, "", "The merge operator to use with the database."
"If a new merge operator is specified, be sure to use fresh"
@ -995,7 +998,8 @@ class Benchmark {
filter_policy_(FLAGS_bloom_bits >= 0
? NewBloomFilterPolicy(FLAGS_bloom_bits)
: nullptr),
prefix_extractor_(NewFixedPrefixTransform(FLAGS_key_size-1)),
prefix_extractor_(NewFixedPrefixTransform(FLAGS_use_plain_table ?
FLAGS_prefix_size : FLAGS_key_size-1)),
db_(nullptr),
num_(FLAGS_num),
value_size_(FLAGS_value_size),
@ -1466,8 +1470,9 @@ class Benchmark {
options.compaction_style = FLAGS_compaction_style_e;
options.block_size = FLAGS_block_size;
options.filter_policy = filter_policy_;
options.prefix_extractor = FLAGS_use_prefix_blooms ? prefix_extractor_
: nullptr;
options.prefix_extractor =
(FLAGS_use_plain_table || FLAGS_use_prefix_blooms) ? prefix_extractor_
: nullptr;
options.max_open_files = FLAGS_open_files;
options.statistics = dbstats;
options.env = FLAGS_env;
@ -1481,8 +1486,8 @@ class Benchmark {
FLAGS_max_bytes_for_level_multiplier;
options.filter_deletes = FLAGS_filter_deletes;
if ((FLAGS_prefix_size == 0) == (FLAGS_rep_factory == kPrefixHash)) {
fprintf(stderr,
"prefix_size should be non-zero iff memtablerep == prefix_hash\n");
fprintf(stderr, "prefix_size should be non-zero iff memtablerep "
"== prefix_hash\n");
exit(1);
}
switch (FLAGS_rep_factory) {
@ -1499,6 +1504,22 @@ class Benchmark {
);
break;
}
if (FLAGS_use_plain_table) {
if (FLAGS_rep_factory != kPrefixHash) {
fprintf(stderr, "Waring: plain table is used with skipList\n");
}
if (!FLAGS_mmap_read && !FLAGS_mmap_write) {
fprintf(stderr, "plain table format requires mmap to operate\n");
exit(1);
}
int bloom_bits_per_key = FLAGS_bloom_bits;
if (bloom_bits_per_key < 0) {
bloom_bits_per_key = 0;
}
options.table_factory = std::shared_ptr<TableFactory>(
NewPlainTableFactory(FLAGS_key_size, bloom_bits_per_key, 0.75));
}
if (FLAGS_max_bytes_for_level_multiplier_additional_v.size() > 0) {
if (FLAGS_max_bytes_for_level_multiplier_additional_v.size() !=
(unsigned int)FLAGS_num_levels) {