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

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This reverts commit 7dafa3a1d7.
This commit is contained in:
Igor Canadi
2014-05-04 08:37:09 -07:00
parent 41e5cf2392
commit d69dc64be7
18 changed files with 368 additions and 510 deletions
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9
include/rocksdb/memtablerep.h
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@@ -223,14 +223,9 @@ extern MemTableRepFactory* NewHashSkipListRepFactory(
// The factory is to create memtables with a hashed linked list:
// it contains a fixed array of buckets, each pointing to a sorted single
// linked list (null if the bucket is empty).
// @bucket_count: number of fixed array buckets
// @huge_page_tlb_size: if <=0, allocate the hash table bytes from malloc.
// Otherwise from huge page TLB. The user needs to reserve
// huge pages for it to be allocated, like:
// sysctl -w vm.nr_hugepages=20
// See linux doc Documentation/vm/hugetlbpage.txt
// bucket_count: number of fixed array buckets
extern MemTableRepFactory* NewHashLinkListRepFactory(
size_t bucket_count = 50000, size_t huge_page_tlb_size = 2 * 1024 * 1024);
size_t bucket_count = 50000);
// This factory creates a cuckoo-hashing based mem-table representation.
// Cuckoo-hash is a closed-hash strategy, in which all key/value pairs

8
include/rocksdb/options.h
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@@ -498,14 +498,6 @@ struct ColumnFamilyOptions {
// number of hash probes per key
uint32_t memtable_prefix_bloom_probes;
// Page size for huge page TLB for bloom in memtable. If <=0, not allocate
// from huge page TLB but from malloc.
// Need to reserve huge pages for it to be allocated. For example:
// sysctl -w vm.nr_hugepages=20
// See linux doc Documentation/vm/hugetlbpage.txt
size_t memtable_prefix_bloom_huge_page_tlb_size;
// Control locality of bloom filter probes to improve cache miss rate.
// This option only applies to memtable prefix bloom and plaintable
// prefix bloom. It essentially limits the max number of cache lines each

17
include/rocksdb/table.h
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@@ -107,19 +107,12 @@ extern TableFactory* NewBlockBasedTableFactory(
// in the hash table
// @index_sparseness: inside each prefix, need to build one index record for how
// many keys for binary search inside each hash bucket.
// @huge_page_tlb_size: if <=0, allocate hash indexes and blooms from malloc.
// Otherwise from huge page TLB. The user needs to reserve
// huge pages for it to be allocated, like:
// sysctl -w vm.nr_hugepages=20
// See linux doc Documentation/vm/hugetlbpage.txt
const uint32_t kPlainTableVariableLength = 0;
extern TableFactory* NewPlainTableFactory(uint32_t user_key_len =
kPlainTableVariableLength,
int bloom_bits_per_prefix = 10,
double hash_table_ratio = 0.75,
size_t index_sparseness = 16,
size_t huge_page_tlb_size = 0);
size_t index_sparseness = 16);
// -- Plain Table
// This factory of plain table ignores Options.prefix_extractor and assumes no
@@ -133,15 +126,9 @@ extern TableFactory* NewPlainTableFactory(uint32_t user_key_len =
// disable it by passing a zero.
// @index_sparseness: need to build one index record for how many keys for
// binary search.
// @huge_page_tlb_size: if <=0, allocate hash indexes and blooms from malloc.
// Otherwise from huge page TLB. The user needs to reserve
// huge pages for it to be allocated, like:
// sysctl -w vm.nr_hugepages=20
// See linux doc Documentation/vm/hugetlbpage.txt
extern TableFactory* NewTotalOrderPlainTableFactory(
uint32_t user_key_len = kPlainTableVariableLength,
int bloom_bits_per_key = 0, size_t index_sparseness = 16,
size_t huge_page_tlb_size = 0);
int bloom_bits_per_key = 0, size_t index_sparseness = 16);
#endif // ROCKSDB_LITE