xinyiZzz commented on code in PR #12496:
URL: https://github.com/apache/doris/pull/12496#discussion_r981925548
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bin/start_be.sh:
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@@ -207,6 +207,8 @@ export UBSAN_OPTIONS=print_stacktrace=1
## set hdfs conf
export LIBHDFS3_CONF="${DORIS_HOME}/conf/hdfs-site.xml"
+export
MALLOC_CONF="percpu_arena:percpu,background_thread:true,metadata_thp:auto,muzzy_decay_ms:30000,dirty_decay_ms:30000,oversize_threshold:0,lg_tcache_max:16"
+
Review Comment:
`muzzy_decay_ms` and `dirty_decay_ms` are currently 30s
`lg_tcache_max` is not the size of the thread cache, it is the maximum size
of a single class (memory block) cached by the thread cache, the default is
32K, and the size of the thread cache is controlled by jemalloc itself
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