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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/10/31 08:16:39 UTC

[GitHub] [doris] xinyiZzz commented on a diff in pull request #13781: [improvement](memory) simplify memory config related to tcmalloc

xinyiZzz commented on code in PR #13781:
URL: https://github.com/apache/doris/pull/13781#discussion_r1009134578


##########
docs/zh-CN/docs/admin-manual/config/be-config.md:
##########
@@ -839,6 +839,12 @@ txn 管理器中每个 txn_partition_map 的最大 txns 数，这是一种自我
 * 描述：限制BE进程使用服务器最大内存百分比。用于防止BE内存挤占太多的机器内存，该参数必须大于0，当百分大于100%之后，该值会默认为100%。
 * 默认值：80%
 
+### `memory_mode`
+
+* 类型：string
+* 描述：控制tcmalloc的回收，如果配置为performance，内存使用超过mem_limit的50%时，doris会释放tcmalloc cache中的内存，如果配置为compact，内存使用超过mem_limit的90%时，doris会释放tcmalloc cache中的内存。

Review Comment:
   50%和90%写反了



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