sdong c7742452eb Add Statistics.getHistogramString() to print more detailed outputs of a histogram ... Summary: Provide a way for users to know more detailed ditribution of a histogram metrics. Example outputs: Manually add statement fprintf(stdout, "%s\n", dbstats->getHistogramString(SST_READ_MICROS).c_str()); Will print out something like: Count: 989151 Average: 1.7659 StdDev: 1.52 Min: 0.0000 Median: 1.2071 Max: 860.0000 Percentiles: P50: 1.21 P75: 1.70 P99: 5.12 P99.9: 13.67 P99.99: 21.70 ------------------------------------------------------ [ 0, 1 ) 390839 39.513% 39.513% ######## [ 1, 2 ) 500918 50.641% 90.154% ########## [ 2, 3 ) 79358 8.023% 98.177% ## [ 3, 4 ) 6297 0.637% 98.813% [ 4, 5 ) 1712 0.173% 98.986% [ 5, 6 ) 1134 0.115% 99.101% [ 6, 7 ) 1222 0.124% 99.224% [ 7, 8 ) 1529 0.155% 99.379% [ 8, 9 ) 1264 0.128% 99.507% [ 9, 10 ) 988 0.100% 99.607% [ 10, 12 ) 1378 0.139% 99.746% [ 12, 14 ) 1828 0.185% 99.931% [ 14, 16 ) 410 0.041% 99.972% [ 16, 18 ) 72 0.007% 99.980% [ 18, 20 ) 67 0.007% 99.986% [ 20, 25 ) 106 0.011% 99.997% [ 25, 30 ) 24 0.002% 99.999% [ 30, 35 ) 1 0.000% 100.000% [ 250, 300 ) 2 0.000% 100.000% [ 300, 350 ) 1 0.000% 100.000% [ 800, 900 ) 1 0.000% 100.000% Test Plan: Manually add a print in db_bench and make sure it prints out as expected. Will add some codes to cover the function Subscribers: leveldb, dhruba Differential Revision: https://reviews.facebook.net/D43611		2015-08-05 20:05:56 -07:00
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allocator.h
arena.cc	Commit both PR and internal code review changes	2015-07-07 16:58:20 -07:00
arena.h
arena_test.cc
auto_roll_logger.cc	Fix WinEnv::NowMicrosec	2015-07-22 14:36:43 -07:00
auto_roll_logger.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
auto_roll_logger_test.cc	Fix when output level is 0 of universal compaction with trivial move	2015-07-27 14:25:57 -07:00
autovector.h	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
autovector_test.cc	Make autovector_test runnable in ROCKSDB_LITE	2015-06-18 15:58:00 -07:00
bloom.cc	fix typos	2015-04-25 18:14:27 +09:00
bloom_test.cc
build_version.h
cache.cc	Add Cache.GetPinnedUsageUsage()	2015-06-18 13:56:31 -07:00
cache_bench.cc
cache_test.cc	Fix memory leaks in PinnedUsageTest	2015-06-19 09:43:08 -07:00
channel.h	Multithreaded backup and restore in BackupEngineImpl	2015-07-02 11:35:51 -07:00
coding.cc
coding.h
coding_test.cc
compaction_job_stats_impl.cc	Count number of corrupt keys during compaction	2015-07-28 16:41:40 -07:00
comparator.cc
compression.h	Fail DB::Open() when the requested compression is not available	2015-06-18 14:55:05 -07:00
crc32c.cc	Print Fast CRC32 support information in DB LOG	2015-07-10 17:59:36 -07:00
crc32c.h	Print Fast CRC32 support information in DB LOG	2015-07-10 17:59:36 -07:00
crc32c_test.cc
db_info_dumper.cc	extend temp str buffer size	2015-07-16 13:56:17 +08:00
db_info_dumper.h
db_test_util.cc	Update Tests To Enable Subcompactions	2015-08-04 22:19:07 -07:00
db_test_util.h	Add two unit tests for SyncWAL()	2015-08-05 14:27:02 -07:00
delete_scheduler_impl.cc	Make DeleteScheduler tests more reliable	2015-08-05 19:16:52 -07:00
delete_scheduler_impl.h	Support delete rate limiting	2015-08-04 20:45:27 -07:00
delete_scheduler_test.cc	Make DeleteScheduler tests more reliable	2015-08-05 19:16:52 -07:00
dynamic_bloom.cc
dynamic_bloom.h	Commit both PR and internal code review changes	2015-07-07 16:58:20 -07:00
dynamic_bloom_test.cc
env.cc	Ensure Windows build w/o port/port.h in public headers	2015-07-16 12:10:16 -07:00
env_hdfs.cc	Improved FileExists API	2015-07-20 17:20:40 -07:00
env_posix.cc	[wal changes 3/3] method in DB to sync WAL without blocking writers	2015-08-05 06:06:39 -07:00
env_test.cc	Move rate_limiter, write buffering, most perf context instrumentation and most random kill out of Env	2015-07-17 16:58:18 -07:00
event_logger.cc	Allow EventLogger to directly log from a JSONWriter.	2015-05-21 15:39:30 -07:00
event_logger.h	Added JSON manifest dump option to ldb command	2015-07-17 10:07:40 -07:00
event_logger_test.cc
file_reader_writer.cc	Add two unit tests for SyncWAL()	2015-08-05 14:27:02 -07:00
file_reader_writer.h	Add statistic histogram "rocksdb.sst.read.micros"	2015-08-05 13:02:33 -07:00
file_reader_writer_test.cc	RangeSync not to sync last 1MB of the file	2015-07-21 16:22:40 -07:00
file_util.cc	Move rate_limiter, write buffering, most perf context instrumentation and most random kill out of Env	2015-07-17 16:58:18 -07:00
file_util.h
filelock_test.cc
filter_policy.cc
hash.cc
hash.h
hash_cuckoo_rep.cc	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
hash_cuckoo_rep.h
hash_linklist_rep.cc	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
hash_linklist_rep.h
hash_skiplist_rep.cc
hash_skiplist_rep.h
heap.h	Replace std::priority_queue in MergingIterator with custom heap, take 2	2015-07-15 03:34:40 -07:00
heap_test.cc	Fix compile on Mac	2015-07-16 11:22:21 +02:00
histogram.cc	fix typos	2015-04-25 18:14:27 +09:00
histogram.h	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
histogram_test.cc	fix typos	2015-04-25 18:14:27 +09:00
instrumented_mutex.cc
instrumented_mutex.h
iostats_context.cc	Ensure Windows build w/o port/port.h in public headers	2015-07-16 12:10:16 -07:00
iostats_context_imp.h	Removed two unused macros in iostats_context	2015-06-12 10:45:02 -07:00
ldb_cmd.cc	dump_manifest supports DB with more number of levels	2015-08-03 11:02:09 -07:00
ldb_cmd.h	Added JSON manifest dump option to ldb command	2015-07-17 10:07:40 -07:00
ldb_cmd_execute_result.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
ldb_tool.cc
log_buffer.cc	Commit both PR and internal code review changes	2015-07-07 16:58:20 -07:00
log_buffer.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
log_write_bench.cc
logging.cc	Make the benchmark scripts configurable and add tests	2015-03-30 11:28:25 -07:00
logging.h	Make the benchmark scripts configurable and add tests	2015-03-30 11:28:25 -07:00
manual_compaction_test.cc	Ensure Windows build w/o port/port.h in public headers	2015-07-16 12:10:16 -07:00
memenv.cc	Improved FileExists API	2015-07-20 17:20:40 -07:00
memenv_test.cc	Improved FileExists API	2015-07-20 17:20:40 -07:00
mock_env.cc	Improved FileExists API	2015-07-20 17:20:40 -07:00
mock_env.h	Improved FileExists API	2015-07-20 17:20:40 -07:00
mock_env_test.cc	Improved FileExists API	2015-07-20 17:20:40 -07:00
murmurhash.cc
murmurhash.h
mutable_cf_options.cc	Don't let flushes preempt compactions	2015-07-17 12:02:52 -07:00
mutable_cf_options.h	Parallelize L0-L1 Compaction: Restructure Compaction Job	2015-08-03 11:32:14 -07:00
mutexlock.h
options.cc	Support delete rate limiting	2015-08-04 20:45:27 -07:00
options_builder.cc
options_helper.cc	Don't let flushes preempt compactions	2015-07-17 12:02:52 -07:00
options_helper.h
options_test.cc	Don't let flushes preempt compactions	2015-07-17 12:02:52 -07:00
perf_context.cc	Ensure Windows build w/o port/port.h in public headers	2015-07-16 12:10:16 -07:00
perf_context_imp.h	more times in perf_context and iostats_context	2015-06-02 02:07:58 -07:00
perf_level.cc	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
perf_level_imp.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
perf_step_timer.h	more times in perf_context and iostats_context	2015-06-02 02:07:58 -07:00
posix_logger.h	Commit both PR and internal code review changes	2015-07-07 16:58:20 -07:00
random.h
rate_limiter.cc	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
rate_limiter.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
rate_limiter_test.cc
scoped_arena_iterator.h
skiplistrep.cc	Allow GetApproximateSize() to include mem table size if it is skip list memtable	2015-06-16 18:13:23 -07:00
slice.cc	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
slice_transform_test.cc
sst_dump_test.cc	Compression sizes option for sst_dump_tool	2015-07-29 17:42:13 -07:00
sst_dump_tool.cc	Merge branch 'master' of github.com:facebook/rocksdb	2015-08-04 10:56:49 -07:00
sst_dump_tool_imp.h	Compression sizes option for sst_dump_tool	2015-07-29 17:42:13 -07:00
statistics.cc	Add Statistics.getHistogramString() to print more detailed outputs of a histogram	2015-08-05 20:05:56 -07:00
statistics.h	Add Statistics.getHistogramString() to print more detailed outputs of a histogram	2015-08-05 20:05:56 -07:00
status.cc	Deprecate WriteOptions::timeout_hint_us	2015-07-14 09:35:48 +02:00
stl_wrappers.h
stop_watch.h
string_util.cc
string_util.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
sync_point.cc	Move rate_limiter, write buffering, most perf context instrumentation and most random kill out of Env	2015-07-17 16:58:18 -07:00
sync_point.h	Move rate_limiter, write buffering, most perf context instrumentation and most random kill out of Env	2015-07-17 16:58:18 -07:00
testharness.cc
testharness.h
testutil.cc	Move rate_limiter, write buffering, most perf context instrumentation and most random kill out of Env	2015-07-17 16:58:18 -07:00
testutil.h	Removing duplicate code	2015-08-05 07:33:27 -07:00
thread_list_test.cc
thread_local.cc	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
thread_local.h	"make format" against last 10 commits	2015-07-13 13:50:18 -07:00
thread_local_test.cc	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
thread_operation.h	Deprecate CompactionFilterV2	2015-07-17 18:59:11 +02:00
thread_status_impl.cc	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
thread_status_updater.cc	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
thread_status_updater.h	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
thread_status_updater_debug.cc
thread_status_util.cc	Only initialize the ThreadStatusData when necessary.	2015-06-17 11:21:18 -07:00
thread_status_util.h	Only initialize the ThreadStatusData when necessary.	2015-06-17 11:21:18 -07:00
thread_status_util_debug.cc	Fix bad performance in debug mode	2015-04-13 15:58:45 -07:00
vectorrep.cc	Windows Port from Microsoft	2015-07-01 16:13:56 -07:00
xfunc.cc	Merge the latest changes from github/master	2015-07-02 17:23:41 -07:00
xfunc.h	Merge the latest changes from github/master	2015-07-02 17:23:41 -07:00
xxhash.cc
xxhash.h