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Allow allocating dynamic bloom, plain table indexes and hash linked list from huge page TLB

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Summary: Add an option to allocate a piece of memory from huge page TLB. Add options to trigger it in dynamic bloom, plain table indexes andhash linked list hash table.

Test Plan: make all check

Reviewers: haobo, ljin

Reviewed By: haobo

CC: nkg-, dhruba, leveldb, igor, yhchiang

Differential Revision: https://reviews.facebook.net/D18357
This commit is contained in:
sdong
2014-04-25 15:45:37 -07:00
parent 66f88c43a5
commit 7dafa3a1d7
18 changed files with 508 additions and 366 deletions
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10
table/plain_table_factory.h
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@@ -56,14 +56,19 @@ class PlainTableFactory : public TableFactory {
// inside the same prefix. It will be the maximum number of linear search
// required after hash and binary search.
// index_sparseness = 0 means index for every key.
// huge_page_tlb_size determines whether to allocate hash indexes from huge
// page TLB and the page size if allocating from there. See comments of
// Arena::AllocateAligned() for details.
explicit PlainTableFactory(uint32_t user_key_len = kPlainTableVariableLength,
int bloom_bits_per_key = 0,
double hash_table_ratio = 0.75,
size_t index_sparseness = 16)
size_t index_sparseness = 16,
size_t huge_page_tlb_size = 2 * 1024 * 1024)
: user_key_len_(user_key_len),
bloom_bits_per_key_(bloom_bits_per_key),
hash_table_ratio_(hash_table_ratio),
index_sparseness_(index_sparseness) {}
index_sparseness_(index_sparseness),
huge_page_tlb_size_(huge_page_tlb_size) {}
const char* Name() const override { return "PlainTable"; }
Status NewTableReader(const Options& options, const EnvOptions& soptions,
const InternalKeyComparator& internal_comparator,
@@ -82,6 +87,7 @@ class PlainTableFactory : public TableFactory {
int bloom_bits_per_key_;
double hash_table_ratio_;
size_t index_sparseness_;
size_t huge_page_tlb_size_;
};
} // namespace rocksdb