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PerfContext::ToString() add option to exclude zero counters 

Test Plan: Added unit test to check w/ w/o zeros scenarios

Reviewers: yhchiang

Reviewed By: yhchiang

Subscribers: sdong, dhruba

Differential Revision: https://reviews.facebook.net/D52809
This commit is contained in:
Dmytro Ivchenko 2016-02-01 13:41:13 -08:00
parent 1d854fa3d4
commit aa5e3b7c04
3 changed files with 57 additions and 22 deletions
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13
db/perf_context_test.cc
View File

@ -589,6 +589,19 @@ TEST_F(PerfContextTest, FalseDBMutexWait) {
}
}
}
TEST_F(PerfContextTest, ToString) {
perf_context.Reset();
perf_context.block_read_count = 12345;
std::string zero_included = perf_context.ToString();
ASSERT_NE(std::string::npos, zero_included.find("= 0"));
ASSERT_NE(std::string::npos, zero_included.find("= 12345"));
std::string zero_excluded = perf_context.ToString(true);
ASSERT_EQ(std::string::npos, zero_excluded.find("= 0"));
ASSERT_NE(std::string::npos, zero_excluded.find("= 12345"));
}
}
int main(int argc, char** argv) {

2
include/rocksdb/perf_context.h
View File

@ -21,7 +21,7 @@ struct PerfContext {
void Reset(); // reset all performance counters to zero
std::string ToString() const;
std::string ToString(bool exclude_zero_counters = false) const;
uint64_t user_key_comparison_count; // total number of user key comparisons
uint64_t block_cache_hit_count; // total number of block cache hits

64
util/perf_context.cc
View File

@ -61,32 +61,54 @@ void PerfContext::Reset() {
#endif
}
#define OUTPUT(counter) #counter << " = " << counter << ", "
#define OUTPUT(counter) \
if (!exclude_zero_counters || (counter > 0)) { \
ss << #counter << " = " << counter << ", "; \
}
std::string PerfContext::ToString() const {
std::string PerfContext::ToString(bool exclude_zero_counters) const {
#if defined(NPERF_CONTEXT) || defined(IOS_CROSS_COMPILE)
return "";
#else
std::ostringstream ss;
ss << OUTPUT(user_key_comparison_count) << OUTPUT(block_cache_hit_count)
<< OUTPUT(block_read_count) << OUTPUT(block_read_byte)
<< OUTPUT(block_read_time) << OUTPUT(block_checksum_time)
<< OUTPUT(block_decompress_time) << OUTPUT(internal_key_skipped_count)
<< OUTPUT(internal_delete_skipped_count) << OUTPUT(write_wal_time)
<< OUTPUT(get_snapshot_time) << OUTPUT(get_from_memtable_time)
<< OUTPUT(get_from_memtable_count) << OUTPUT(get_post_process_time)
<< OUTPUT(get_from_output_files_time) << OUTPUT(seek_on_memtable_time)
<< OUTPUT(seek_on_memtable_count) << OUTPUT(seek_child_seek_time)
<< OUTPUT(seek_child_seek_count) << OUTPUT(seek_min_heap_time)
<< OUTPUT(seek_internal_seek_time) << OUTPUT(find_next_user_entry_time)
<< OUTPUT(write_pre_and_post_process_time) << OUTPUT(write_memtable_time)
<< OUTPUT(db_mutex_lock_nanos) << OUTPUT(db_condition_wait_nanos)
<< OUTPUT(merge_operator_time_nanos) << OUTPUT(write_delay_time)
<< OUTPUT(read_index_block_nanos) << OUTPUT(read_filter_block_nanos)
<< OUTPUT(new_table_block_iter_nanos) << OUTPUT(new_table_iterator_nanos)
<< OUTPUT(block_seek_nanos) << OUTPUT(find_table_nanos)
<< OUTPUT(bloom_memtable_hit_count) << OUTPUT(bloom_memtable_miss_count)
<< OUTPUT(bloom_sst_hit_count) << OUTPUT(bloom_sst_miss_count);
OUTPUT(user_key_comparison_count);
OUTPUT(block_cache_hit_count);
OUTPUT(block_read_count);
OUTPUT(block_read_byte);
OUTPUT(block_read_time);
OUTPUT(block_checksum_time);
OUTPUT(block_decompress_time);
OUTPUT(internal_key_skipped_count);
OUTPUT(internal_delete_skipped_count);
OUTPUT(write_wal_time);
OUTPUT(get_snapshot_time);
OUTPUT(get_from_memtable_time);
OUTPUT(get_from_memtable_count);
OUTPUT(get_post_process_time);
OUTPUT(get_from_output_files_time);
OUTPUT(seek_on_memtable_time);
OUTPUT(seek_on_memtable_count);
OUTPUT(seek_child_seek_time);
OUTPUT(seek_child_seek_count);
OUTPUT(seek_min_heap_time);
OUTPUT(seek_internal_seek_time);
OUTPUT(find_next_user_entry_time);
OUTPUT(write_pre_and_post_process_time);
OUTPUT(write_memtable_time);
OUTPUT(db_mutex_lock_nanos);
OUTPUT(db_condition_wait_nanos);
OUTPUT(merge_operator_time_nanos);
OUTPUT(write_delay_time);
OUTPUT(read_index_block_nanos);
OUTPUT(read_filter_block_nanos);
OUTPUT(new_table_block_iter_nanos);
OUTPUT(new_table_iterator_nanos);
OUTPUT(block_seek_nanos);
OUTPUT(find_table_nanos);
OUTPUT(bloom_memtable_hit_count);
OUTPUT(bloom_memtable_miss_count);
OUTPUT(bloom_sst_hit_count);
OUTPUT(bloom_sst_miss_count);
return ss.str();
#endif
}