[GitHub] [doris] muyizi commented on a diff in pull request #11404: [improve](be) Lock times limit

[GitBox <gi...@apache.org>]

muyizi commented on code in PR #11404:
URL: https://github.com/apache/doris/pull/11404#discussion_r935061948


##########
be/src/runtime/memory/chunk_allocator.cpp:
##########
@@ -86,14 +88,23 @@ class ChunkArena {
         int idx = BitUtil::Log2Ceiling64(size);
         auto& free_list = _chunk_lists[idx];
 
-        std::lock_guard<SpinLock> l(_lock);
-        if (free_list.empty()) {
-            return false;
+        if (free_list.empty()) return false;
+
+        for (int i = 0; i < TRY_LOCK_TIMES; ++i) {
+            if (_lock.try_lock()) {

Review Comment:
   > 
   
   上述结果是我用的100个线程并行进行测试的



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