dataroaring commented on code in PR #56948:
URL: https://github.com/apache/doris/pull/56948#discussion_r2428309679
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be/src/olap/memtable.h:
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@@ -213,6 +214,21 @@ class MemTable {
// Used to wrapped by to_block to do exception handle logic
Status _to_block(std::unique_ptr<vectorized::Block>* res);
+ int64_t _adaptive_write_buffer_size() const {
+ const int64_t current_load_mem_value =
MemoryProfile::load_current_usage();
+ int64_t factor = 4;
+ // Memory usage intervals:
+ // (80 %, 100 %] → 1× buffer
+ // (50 %, 80 %] → 2× buffer
+ // [0 %, 50 %] → 4× buffer
+ if (current_load_mem_value > (_load_mem_limit * 4) / 5) { // > 80 %
+ factor = 1;
+ } else if (current_load_mem_value > _load_mem_limit / 2) { // > 50 %
+ factor = 2;
+ }
+ return config::write_buffer_size * factor;
+ }
Review Comment:
put it to .cpp
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