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| author | Maysam Yabandeh <myabandeh@fb.com> | 2018-06-22 15:14:05 -0700 |
|---|---|---|
| committer | Facebook Github Bot <facebook-github-bot@users.noreply.github.com> | 2018-06-22 15:27:46 -0700 |
| commit | 80ade9ad830d9bc6e46388cf1ea5fb1fd623063b (patch) | |
| tree | 7a44c256b5a386017e8b6ea147ba801cc328d37d /examples | |
| parent | c726f7fda84fbd047ed86bf650198c14c16321a6 (diff) | |
Pin top-level index on partitioned index/filter blocks (#4037)
Summary:
Top-level index in partitioned index/filter blocks are small and could be pinned in memory. So far we use that by cache_index_and_filter_blocks to false. This however make it difficult to keep account of the total memory usage. This patch introduces pin_top_level_index_and_filter which in combination with cache_index_and_filter_blocks=true keeps the top-level index in cache and yet pinned them to avoid cache misses and also cache lookup overhead.
Closes https://github.com/facebook/rocksdb/pull/4037
Differential Revision: D8596218
Pulled By: maysamyabandeh
fbshipit-source-id: 3a5f7f9ca6b4b525b03ff6bd82354881ae974ad2
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/rocksdb_option_file_example.ini | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/rocksdb_option_file_example.ini b/examples/rocksdb_option_file_example.ini index 8e07131b3..351f1ed01 100644 --- a/examples/rocksdb_option_file_example.ini +++ b/examples/rocksdb_option_file_example.ini @@ -138,6 +138,7 @@ block_restart_interval=16 cache_index_and_filter_blocks=false pin_l0_filter_and_index_blocks_in_cache=false + pin_top_level_index_and_filter=false index_type=kBinarySearch hash_index_allow_collision=true flush_block_policy_factory=FlushBlockBySizePolicyFactory |