4 commits

Author	SHA1	Message	Date
Kai Liu	ef602f6275	Misc cleanup on performance branch ... Summary: Did some trivial stuffs: * Add more comments; * fix compiler's warning messages (uninitialized variables). * etc Test Plan: make check	2014-01-17 14:26:29 -08:00
Kai Liu	cd535c2280	Optimize MayContainHash() ... Summary: In latest leaf's, MayContainHash() consistently consumes 5%~7% CPU usage. I checked the code and did an experiment with/without inlining this method. In release mode, with `1024 * 1024 * 256` bits and `1024 * 512` entries, both call 2^30 MayContainHash() with distinctive parameters. As the result showed, this patch reduced the running time from 9.127 sec to 7.891 sec. Test Plan: make check Reviewers: sdong, haobo CC: leveldb Differential Revision: https://reviews.facebook.net/D15177	2014-01-14 22:03:57 -08:00
Siying Dong	abaf26266d	[RocksDB] [Performance Branch] Some Changes to PlainTable format ... Summary: Some changes to PlainTable format: (1) support variable key length (2) use user defined slice transformer to extract prefixes (3) Run some test cases against PlainTable in db_test and table_test Test Plan: test db_test Reviewers: haobo, kailiu CC: dhruba, igor, leveldb, nkg- Differential Revision: https://reviews.facebook.net/D14457	2013-12-20 12:08:35 -08:00
Haobo Xu	3c02c363b3	[RocksDB] [Performance Branch] Added dynamic bloom, to be used for memable non-existing key filtering ... Summary: as title Test Plan: dynamic_bloom_test Reviewers: dhruba, sdong, kailiu CC: leveldb Differential Revision: https://reviews.facebook.net/D14385	2013-12-11 00:15:14 -08:00