- 19 5月, 2012 1 次提交
-
-
由 Dhruba Borthakur 提交于
Summary: Task ID: # Blame Rev: Test Plan: Revert Plan: Differential Revision: https://reviews.facebook.net/D3309
-
- 17 5月, 2012 1 次提交
-
-
由 Dhruba Borthakur 提交于
Add support to specify the number of shards for the Block cache. By default, the block cache is sharded into 16 parts. Summary: Task ID: # Blame Rev: Test Plan: Revert Plan: Differential Revision: https://reviews.facebook.net/D3273
-
- 16 5月, 2012 1 次提交
-
-
由 Arun Sharma 提交于
Summary: This speeds up CRC computation significantly on hardware that supports it. Enabled via -msse4. Note: the binary won't be usable on older CPUs that don't support the instruction. Test Plan: crc32c_test Reviewers: dhruba Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D3201
-
- 15 5月, 2012 2 次提交
-
-
由 Dhruba Borthakur 提交于
Summary: Task ID: # Blame Rev: Test Plan: Revert Plan: Reviewers: chip Reviewed By: chip CC: sc, adsharma Differential Revision: https://reviews.facebook.net/D3225
-
由 Arun Sharma 提交于
Summary: Some code reorganization in-preparation for replacing with a hardware instruction. * Use u64 for some of the key types * Use an ALIGN macro so code is easier to read Test Plan: crc32c_test Reviewers: dhruba Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D3135
-
- 12 5月, 2012 2 次提交
-
-
由 Dhruba Borthakur 提交于
Summary: Task ID: # Blame Rev: Test Plan: Revert Plan: Differential Revision: https://reviews.facebook.net/D3147
-
由 Arun Sharma 提交于
Summary: skiplist doesn't cache the location of the last insert and becomes CPU bound when the input data has sequential keys. Notes on thread safety: ::Insert() already requires external synchronization. So this change is not making it any worse. Test Plan: skiplist_test Reviewers: dhruba Reviewed By: dhruba Differential Revision: https://reviews.facebook.net/D3129
-
- 10 5月, 2012 1 次提交
-
-
由 Dhruba Borthakur 提交于
Summary: Task ID: # Blame Rev: Test Plan: Revert Plan: Differential Revision: https://reviews.facebook.net/D3105
-
- 17 4月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
In particular, we add a new FilterPolicy class. An instance of this class can be supplied in Options when opening a database. If supplied, the instance is used to generate summaries of keys (e.g., a bloom filter) which are placed in sstables. These summaries are consulted by DB::Get() so we can avoid reading sstable blocks that are guaranteed to not contain the key we are looking for. This change provides one implementation of FilterPolicy based on bloom filters. Other changes: - Updated version number to 1.4. - Some build tweaks. - C binding for CompactRange. - A few more benchmarks: deleteseq, deleterandom, readmissing, seekrandom. - Minor .gitignore update.
-
- 31 3月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
-
- 22 3月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
(1) Separate out C++ and CC flags (fixes c_test compilation) (2) Move snappy/perftools detection to script (3) Fix db_bench_sqlite3 and db_bench_tree_db build rules
-
- 16 3月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
-
- 09 3月, 2012 2 次提交
-
-
由 Sanjay Ghemawat 提交于
-
由 Sanjay Ghemawat 提交于
-
- 06 3月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
-
- 03 2月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
-
- 26 1月, 2012 1 次提交
-
-
由 Sanjay Ghemawat 提交于
-
- 30 11月, 2011 1 次提交
-
-
由 Hans Wennborg 提交于
- Makefile: Use $(CXX) for compiling C++ files, don't override the environment's value of $CXX - build_detect_platform: use $CXX instead of g++. Based on bug report from Theo Schlossnagle: http://code.google.com/p/leveldb/issues/detail?id=46 (Sync with uptream at 25807040.)
-
- 15 11月, 2011 1 次提交
-
-
由 Hans Wennborg 提交于
- Pass system's values of CFLAGS,LDFLAGS. Don't override OPT if it's already set. Original patch by Alessio Treglia <alessio@debian.org>: http://code.google.com/p/leveldb/issues/detail?id=27#c6 - Remove 1 exit time destructor from leveldb. See http://crbug.com/101600 - Fix problem where sstable building code would pass an internal key to the user comparator. (Sync with uptream at 25436817.)
-
- 01 11月, 2011 1 次提交
-
-
由 Hans Wennborg 提交于
- Replace raw slice comparison with a call to user comparator. Added test for custom comparators. - Fix end of namespace comments. - Fixed bug in picking inputs for a level-0 compaction. When finding overlapping files, the covered range may expand as files are added to the input set. We now correctly expand the range when this happens instead of continuing to use the old range. For example, suppose L0 contains files with the following ranges: F1: a .. d F2: c .. g F3: f .. j and the initial compaction target is F3. We used to search for range f..j which yielded {F2,F3}. However we now expand the range as soon as another file is added. In this case, when F2 is added, we expand the range to c..j and restart the search. That picks up file F1 as well. This change fixes a bug related to deleted keys showing up incorrectly after a compaction as described in Issue 44. (Sync with upstream @25072954)
-
- 06 10月, 2011 1 次提交
-
-
由 Gabor Cselle 提交于
- Added DB::CompactRange() method. Changed manual compaction code so it breaks up compactions of big ranges into smaller compactions. Changed the code that pushes the output of memtable compactions to higher levels to obey the grandparent constraint: i.e., we must never have a single file in level L that overlaps too much data in level L+1 (to avoid very expensive L-1 compactions). Added code to pretty-print internal keys. - Fixed bug where we would not detect overlap with files in level-0 because we were incorrectly using binary search on an array of files with overlapping ranges. Added "leveldb.sstables" property that can be used to dump all of the sstables and ranges that make up the db state. - Removing post_write_snapshot support. Email to leveldb mailing list brought up no users, just confusion from one person about what it meant. - Fixing static_cast char to unsigned on BIG_ENDIAN platforms. Fixes Issue 35 and Issue 36. - Comment clarification to address leveldb Issue 37. - Change license in posix_logger.h to match other files. - A build problem where uint32 was used instead of uint32_t. Sync with upstream @24408625
-
- 27 9月, 2011 1 次提交
-
-
由 Hans Wennborg 提交于
Adding GNU/kFreeBSD support. As requested here: http://code.google.com/p/leveldb/issues/detail?id=38 Use uint64_t instead of size_t in MemEnvTest. As pointed out at http://code.google.com/p/leveldb/issues/detail?id=41
-
- 12 9月, 2011 1 次提交
-
-
由 Hans Wennborg 提交于
Fix GCC -Wshadow warnings in LevelDB's public header files, reported by Dustin. Add in-memory Env implementation (helpers/memenv/*). This enables users to create LevelDB databases in-memory. Initialize ShardedLRUCache::last_id_ to zero. This fixes a Valgrind warning. (Also delete port/sha1_* which were removed upstream some time ago.)
-
- 02 9月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
- Fix bug in Get: when it triggers a compaction, it could sometimes mark the compaction with the wrong level (if there was a gap in the set of levels examined for the Get). - Do not hold mutex while writing to the log file or to the MANIFEST file. Added a new benchmark that runs a writer thread concurrently with reader threads. Percentiles ------------------------------ micros/op: avg median 99 99.9 99.99 99.999 max ------------------------------------------------------ before: 42 38 110 225 32000 42000 48000 after: 24 20 55 65 130 1100 7000 - Fixed race in optimized Get. It should have been using the pinned memtables, not the current memtables. git-svn-id: https://leveldb.googlecode.com/svn/trunk@50 62dab493-f737-651d-591e-8d6aee1b9529
-
- 23 8月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
- Fix for issue 33 (non-null-terminated result from leveldb_property_value()) - Support for running multiple instances of a benchmark in parallel. - Reduce lock contention on Get(): (1) Do not hold the lock while searching memtables. (2) Shard block and table caches 16-ways. Benchmark for evaluating this change: $ db_bench --benchmarks=fillseq1,readrandom --threads=$n (fillseq1 is a small hack to make sure fillseq runs once regardless of number of threads specified on the command line). git-svn-id: https://leveldb.googlecode.com/svn/trunk@49 62dab493-f737-651d-591e-8d6aee1b9529
-
- 16 8月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
- Fix bug in Iterator::Prev where it would return the wrong key. Fixes issues 29 and 30. - Added a tweak to testharness to allow running just some tests. - Fixing two minor documentation errors based on issues 28 and 25. - Cleanup; fix namespaces of export-to-C code. Also fix one "const char*" vs "char*" mismatch. git-svn-id: https://leveldb.googlecode.com/svn/trunk@48 62dab493-f737-651d-591e-8d6aee1b9529
-
- 06 8月, 2011 2 次提交
-
-
由 dgrogan@chromium.org 提交于
git-svn-id: https://leveldb.googlecode.com/svn/trunk@47 62dab493-f737-651d-591e-8d6aee1b9529
-
由 gabor@google.com 提交于
- Added a C binding for LevelDB. May be useful as a stable ABI that can be used by programs that keep leveldb in a shared library, or for JNI API. - Replaced SQLite's readseq benchmark to a more efficient version. SQLite readseq speeds increased by about a factor of 2x from the previous version. Also updated benchmark page to reflect readseq speed up. git-svn-id: https://leveldb.googlecode.com/svn/trunk@46 62dab493-f737-651d-591e-8d6aee1b9529
-
- 30 7月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
- Based on suggestions on the sqlite-users mailing list, we removed the superfluous index on the primary key for SQLite's benchmarks, and turned write-ahead logging ("WAL") on. This led to performance improvements for SQLite. - Based on a suggestion by Florian Weimer on the leveldb mailing list, we disabled hard drive write-caching via hdparm when testing synchronous writes. This led to performance losses for LevelDB and Kyoto TreeDB. - Fixed a mistake in 2.A.->Random where the bar sizes were switched for Kyoto TreeDB and SQLite. git-svn-id: https://leveldb.googlecode.com/svn/trunk@45 62dab493-f737-651d-591e-8d6aee1b9529
-
- 27 7月, 2011 5 次提交
-
-
由 gabor@google.com 提交于
git-svn-id: https://leveldb.googlecode.com/svn/trunk@44 62dab493-f737-651d-591e-8d6aee1b9529
-
由 gabor@google.com 提交于
(Baseline comparison does not make sense for large values.) git-svn-id: https://leveldb.googlecode.com/svn/trunk@43 62dab493-f737-651d-591e-8d6aee1b9529
-
由 gabor@google.com 提交于
git-svn-id: https://leveldb.googlecode.com/svn/trunk@42 62dab493-f737-651d-591e-8d6aee1b9529
-
由 gabor@google.com 提交于
git-svn-id: https://leveldb.googlecode.com/svn/trunk@41 62dab493-f737-651d-591e-8d6aee1b9529
-
由 gabor@google.com 提交于
- LevelDB patch for FreeBSD. This resolves Issue 22. Contributed by dforsythe (thanks!). - Removing Chromium-specific files. They are now going to live in the Chromium repository. - Adding a benchmark page comparing LevelDB performance to SQLite and Kyoto Cabinet's TreeDB, along with code to generate the benchmarks. Thanks to Kevin Tseng for compiling the benchmarks, and Scott Hess and Mikio Hirabayashi for their help and advice. git-svn-id: https://leveldb.googlecode.com/svn/trunk@40 62dab493-f737-651d-591e-8d6aee1b9529
-
- 21 7月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
- Removed one copy of an uncompressed block contents changing the signature of Snappy_Uncompress() so it uncompresses into a flat array instead of a std::string. Speeds up readrandom ~10%. - Instead of a combination of Env/WritableFile, we now have a Logger interface that can be easily overridden applications that want to supply their own logging. - Separated out the gcc and Sun Studio parts of atomic_pointer.h so we can use 'asm', 'volatile' keywords for Sun Studio. git-svn-id: https://leveldb.googlecode.com/svn/trunk@39 62dab493-f737-651d-591e-8d6aee1b9529
-
- 20 7月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
- LevelDB patch for Sun Studio Based on a patch submitted by Theo Schlossnagle - thanks! This fixes Issue 17. - Fix a couple of test related memory leaks. git-svn-id: https://leveldb.googlecode.com/svn/trunk@38 62dab493-f737-651d-591e-8d6aee1b9529
-
- 15 7月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
Slight tweak to the no-overlap optimization: only push to level 2 to reduce the amount of wasted space when the same small key range is being repeatedly overwritten. Fix for Issue 18: Avoid failure on Windows by avoiding deletion of lock file until the end of DestroyDB(). Fix for Issue 19: Disregard sequence numbers when checking for overlap in sstable ranges. This fixes issue 19: when writing the same key over and over again, we would generate a sequence of sstables that were never merged together since their sequence numbers were disjoint. Don't ignore map/unmap error checks. Miscellaneous fixes for small problems Sanjay found while diagnosing issue/9 and issue/16 (corruption_testr failures). - log::Reader reports the record type when it finds an unexpected type. - log::Reader no longer reports an error when it encounters an expected zero record regardless of the setting of the "checksum" flag. - Added a missing forward declaration. - Documented a side-effects of larger write buffer sizes (longer recovery time). git-svn-id: https://leveldb.googlecode.com/svn/trunk@37 62dab493-f737-651d-591e-8d6aee1b9529
-
- 01 7月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
Change atomic_pointer.h to prefer a memory barrier based implementation over a <cstdatomic> based implementation for the following reasons: (1) On a x86-32-bit gcc-4.4 build, <ctdatomic> was corrupting the AtomicPointer. (2) On a x86-64-bit gcc build, a <ctstdatomic> based acquire-load takes ~15ns as opposed to the ~1ns for a memory-barrier based implementation. Fixes issue 9 (corruption_test fails) http://code.google.com/p/leveldb/issues/detail?id=9 Fixes issue 16 (CorruptionTest.MissingDescriptor fails) http://code.google.com/p/leveldb/issues/detail?id=16 git-svn-id: https://leveldb.googlecode.com/svn/trunk@36 62dab493-f737-651d-591e-8d6aee1b9529
-
- 30 6月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
git-svn-id: https://leveldb.googlecode.com/svn/trunk@35 62dab493-f737-651d-591e-8d6aee1b9529
-
- 29 6月, 2011 1 次提交
-
-
由 gabor@google.com 提交于
This revision adds two major changes: 1. build_detect_platform which generates build_config.mk with platform-dependent flags for the build process 2. /port/atomic_pointer.h with anAtomicPointerimplementation for platforms without <cstdatomic> Some of this code is loosely based on patches submitted to the LevelDB mailing list at https://groups.google.com/forum/#!forum/leveldb Tip of the hat to Dave Smith and Edouard A, who both sent patches. The presence of Snappy (http://code.google.com/p/snappy/) and cstdatomic are now both detected in the build_detect_platform script (1.) which gets executing during make. For (2.), instead of broadly importing atomicops_* from Chromium or the Google performance tools, we chose to just implement AtomicPointer and the limited atomic load and store operations it needs. This resulted in much less code and fewer files - everything is contained in atomic_pointer.h. git-svn-id: https://leveldb.googlecode.com/svn/trunk@34 62dab493-f737-651d-591e-8d6aee1b9529
-