From ca1626926d50889454183f85514a96ed4ab9c79c Mon Sep 17 00:00:00 2001 From: alesapin Date: Fri, 21 Jun 2019 18:11:33 +0300 Subject: [PATCH] Adjust settings --- dbms/src/Core/Settings.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/dbms/src/Core/Settings.h b/dbms/src/Core/Settings.h index 0cd132ef9ed..9458fbc9195 100644 --- a/dbms/src/Core/Settings.h +++ b/dbms/src/Core/Settings.h @@ -104,12 +104,12 @@ struct Settings : public SettingsCollection M(SettingBool, optimize_skip_unused_shards, false, "Assumes that data is distributed by sharding_key. Optimization to skip unused shards if SELECT query filters by sharding_key.") \ \ M(SettingUInt64, merge_tree_min_rows_for_concurrent_read, (20 * 8192), "If at least as many lines are read from one file, the reading can be parallelized.") \ - M(SettingUInt64, merge_tree_min_bytes_for_concurrent_read, (100 * 1024 * 1024), "If at least as many bytes are read from one file, the reading can be parallelized.") \ + M(SettingUInt64, merge_tree_min_bytes_for_concurrent_read, (24 * 10 * 1024 * 1024), "If at least as many bytes are read from one file, the reading can be parallelized.") \ M(SettingUInt64, merge_tree_min_rows_for_seek, 0, "You can skip reading more than that number of rows at the price of one seek per file.") \ M(SettingUInt64, merge_tree_min_bytes_for_seek, 0, "You can skip reading more than that number of bytes at the price of one seek per file.") \ M(SettingUInt64, merge_tree_coarse_index_granularity, 8, "If the index segment can contain the required keys, divide it into as many parts and recursively check them.") \ - M(SettingUInt64, merge_tree_max_rows_to_use_cache, (1024 * 1024), "The maximum number of rows per request, to use the cache of uncompressed data. If the request is large, the cache is not used. (For large queries not to flush out the cache.)") \ - M(SettingUInt64, merge_tree_max_bytes_to_use_cache, (600 * 1024 * 1024), "The maximum number of rows per request, to use the cache of uncompressed data. If the request is large, the cache is not used. (For large queries not to flush out the cache.)") \ + M(SettingUInt64, merge_tree_max_rows_to_use_cache, (128 * 8192), "The maximum number of rows per request, to use the cache of uncompressed data. If the request is large, the cache is not used. (For large queries not to flush out the cache.)") \ + M(SettingUInt64, merge_tree_max_bytes_to_use_cache, (192 * 10 * 1024 * 1024), "The maximum number of rows per request, to use the cache of uncompressed data. If the request is large, the cache is not used. (For large queries not to flush out the cache.)") \ \ M(SettingBool, merge_tree_uniform_read_distribution, true, "Distribute read from MergeTree over threads evenly, ensuring stable average execution time of each thread within one read operation.") \ \