fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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Haobo Xu f2f4c8072f [RocksDB] Added nano second stopwatch and new perf counters to track block read cost ... Summary: The pupose of this diff is to expose per user-call level precise timing of block read, so that we can answer questions like: a Get() costs me 100ms, is that somehow related to loading blocks from file system, or sth else? We will answer that with EXACTLY how many blocks have been read, how much time was spent on transfering the bytes from os, how much time was spent on checksum verification and how much time was spent on block decompression, just for that one Get. A nano second stopwatch was introduced to track time with higher precision. The cost/precision of the stopwatch is also measured in unit-test. On my dev box, retrieving one time instance costs about 30ns, on average. The deviation of timing results is good enough to track 100ns-1us level events. And the overhead could be safely ignored for 100us level events (10000 instances/s), for example, a viewstate thrift call. Test Plan: perf_context_test, also testing with viewstate shadow traffic. Reviewers: dhruba Reviewed By: dhruba CC: leveldb, xjin Differential Revision: https://reviews.facebook.net/D12351		11 years ago
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arena_impl.cc	Make arena block size configurable	12 years ago
arena_impl.h	Replace include/leveldb with include/rocksdb.	12 years ago
arena_test.cc	Make arena block size configurable	12 years ago
auto_roll_logger.cc	[RocksDB] Fix PosixLogger and AutoRollLogger thread safety	12 years ago
auto_roll_logger.h	[RocksDB] Fix PosixLogger and AutoRollLogger thread safety	12 years ago
auto_roll_logger_test.cc	Replace include/leveldb with include/rocksdb.	12 years ago
bit_set.h	[Rocksdb] Implement filluniquerandom	12 years ago
bloom.cc	Replace include/leveldb with include/rocksdb.	12 years ago
bloom_test.cc	Replace include/leveldb with include/rocksdb.	12 years ago
build_version.h	Stop continually re-creating build_version.c	12 years ago
cache.cc	Replace include/leveldb with include/rocksdb.	12 years ago
cache_test.cc	Replace include/leveldb with include/rocksdb.	12 years ago
coding.cc	Add three new MemTableRep's	12 years ago
coding.h	Add three new MemTableRep's	12 years ago
coding_test.cc	Codemod NULL to nullptr	12 years ago
comparator.cc	Replace include/leveldb with include/rocksdb.	12 years ago
crc32c.cc	Codemod NULL to nullptr	12 years ago
crc32c.h	A number of fixes:	13 years ago
crc32c_test.cc	Fix all warnings generated by -Wall option to the compiler.	12 years ago
env.cc	Replace include/leveldb with include/rocksdb.	12 years ago
env_hdfs.cc	Replace include/leveldb with include/rocksdb.	12 years ago
env_posix.cc	[RocksDB] Added nano second stopwatch and new perf counters to track block read cost	11 years ago
env_test.cc	Replace include/leveldb with include/rocksdb.	12 years ago
filelock_test.cc	Replace include/leveldb with include/rocksdb.	12 years ago
filter_policy.cc	Replace include/leveldb with include/rocksdb.	12 years ago
hash.cc	A number of fixes:	13 years ago
hash.h	reverting disastrous MOE commit, returning to r21	14 years ago
histogram.cc	[Rocksdb] Remove unused double apis to record into histograms	12 years ago
histogram.h	Replace include/leveldb with include/rocksdb.	12 years ago
histogram_test.cc	Introduce histogram in statistics.h	12 years ago
ldb_cmd.cc	New ldb command to convert compaction style	11 years ago
ldb_cmd.h	New ldb command to convert compaction style	11 years ago
ldb_cmd_execute_result.h	Enhanced ldb to support data access commands	12 years ago
ldb_tool.cc	New ldb command to convert compaction style	11 years ago
logging.cc	Replace include/leveldb with include/rocksdb.	12 years ago
logging.h	A number of fixes:	13 years ago
manual_compaction_test.cc	Replace include/leveldb with include/rocksdb.	12 years ago
murmurhash.cc	Implement RowLocks for assoc schema	12 years ago
murmurhash.h	Implement RowLocks for assoc schema	12 years ago
mutexlock.h	Implement ReadWrite locks for leveldb	12 years ago
options.cc	An iterator may automatically invoke reseeks.	11 years ago
perf_context.cc	[RocksDB] Added nano second stopwatch and new perf counters to track block read cost	11 years ago
perf_context_imp.h	[RocksDB] Added nano second stopwatch and new perf counters to track block read cost	11 years ago
posix_logger.h	Replace include/leveldb with include/rocksdb.	12 years ago
random.h	[RocksDB] Include 64bit random number generator	12 years ago
signal_test.cc	[RocksDB] fix build	12 years ago
skiplistrep.cc	Replace include/leveldb with include/rocksdb.	12 years ago
slice.cc	Replace include/leveldb with include/rocksdb.	12 years ago
stack_trace.h	[RocksDB] Add stacktrace signal handler	12 years ago
statistics.cc	Replace include/leveldb with include/rocksdb.	12 years ago
stats_logger.h	Clean up compiler warnings generated by -Wall option.	12 years ago
status.cc	Replace include/leveldb with include/rocksdb.	12 years ago
stl_wrappers.h	Replace include/leveldb with include/rocksdb.	12 years ago
stop_watch.h	[RocksDB] Added nano second stopwatch and new perf counters to track block read cost	11 years ago
string_util.cc	Ability to set different size fanout multipliers for every level.	12 years ago
string_util.h	Ability to set different size fanout multipliers for every level.	12 years ago
testharness.cc	Codemod NULL to nullptr	12 years ago
testharness.h	Replace include/leveldb with include/rocksdb.	12 years ago
testutil.cc	Fix all warnings generated by -Wall option to the compiler.	12 years ago
testutil.h	Replace include/leveldb with include/rocksdb.	12 years ago
transformrep.cc	Fix memory leak	12 years ago
vectorrep.cc	Replace include/leveldb with include/rocksdb.	12 years ago