raftstore: increase region size from 64M to 96M

etc/config-template.toml

@@ -55,11 +55,11 @@ pd-store-heartbeat-tick-interval = "10s"
 # When the region's size exceeds region-max-size, we will split the region 
 # into two which the left region's size will be region-split-size or a little 
 # bit smaller. 
-region-max-size = "80MB"
-region-split-size = "64MB"
+region-max-size = "128MB"
+region-split-size = "96MB"
 # When region size changes exceeds region-split-check-diff, we should check 
 # whether the region should be split or not. 
-region-split-check-diff = "8MB"
+region-split-check-diff = "24MB"
 # Interval to check region whether need to be split or not.
 split-region-check-tick-interval = "5s"
 

src/bin/tikv-server.rs

@@ -412,14 +412,14 @@ fn build_cfg(matches: &Matches, config: &toml::Value, cluster_id: u64, addr: Str
     cfg.raft_store.region_split_size =
         get_toml_int(config,
                      "raftstore.region-split-size",
-                     Some(64 * 1024 * 1024)) as u64;
+                     Some(96 * 1024 * 1024)) as u64;
     cfg.raft_store.region_max_size =
-        get_toml_int(config, "raftstore.region-max-size", Some(80 * 1024 * 1024)) as u64;
+        get_toml_int(config, "raftstore.region-max-size", Some(128 * 1024 * 1024)) as u64;
 
     cfg.raft_store.region_check_size_diff =
         get_toml_int(config,
                      "raftstore.region-split-check-diff",
-                     Some(8 * 1024 * 1024)) as u64;
+                     Some(24 * 1024 * 1024)) as u64;
 
     cfg.raft_store.raft_log_gc_tick_interval =
         get_toml_int(config, "raftstore.raft-log-gc-tick-interval", Some(10_000)) as u64;

src/raftstore/store/config.rs

@@ -27,9 +27,9 @@ const RAFT_LOG_GC_THRESHOLD: u64 = 50;
 const RAFT_LOG_GC_COUNT_LIMIT: u64 = REGION_SPLIT_SIZE * 3 / 4 / 1024;
 const RAFT_LOG_GC_SIZE_LIMIT: u64 = REGION_SPLIT_SIZE * 3 / 4;
 const SPLIT_REGION_CHECK_TICK_INTERVAL: u64 = 10000;
-const REGION_SPLIT_SIZE: u64 = 64 * 1024 * 1024;
-const REGION_MAX_SIZE: u64 = 80 * 1024 * 1024;
-const REGION_CHECK_DIFF: u64 = 8 * 1024 * 1024;
+const REGION_SPLIT_SIZE: u64 = 96 * 1024 * 1024;
+const REGION_MAX_SIZE: u64 = REGION_SPLIT_SIZE + REGION_SPLIT_SIZE / 3;
+const REGION_CHECK_DIFF: u64 = REGION_SPLIT_SIZE / 4;
 const REGION_COMPACT_CHECK_TICK_INTERVAL: u64 = 5 * 60 * 1000; // 5 min
 const REGION_COMPACT_DELETE_KEYS_COUNT: u64 = 1_000_000;
 const PD_HEARTBEAT_TICK_INTERVAL: u64 = 5000;