[opt](scanner) optimize the number of threads of scanners, follow up a…

…pache#28640 (apache#30030) follow up apache#28640, doris_scanner_thread_pool_thread_num may be to large in machines with 128 cores.
hello-stephen · Jan 19, 2024 · 17a1fd7 · 17a1fd7
1 parent 56d5991
commit 17a1fd7
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/be/src/common/config.cpp b/be/src/common/config.cpp
@@ -236,7 +236,7 @@ DEFINE_Int32(doris_scanner_thread_pool_thread_num, "-1");
 DEFINE_Validator(doris_scanner_thread_pool_thread_num, [](const int config) -> bool {
     if (config == -1) {
         CpuInfo::init();
-        doris_scanner_thread_pool_thread_num = std::max(48, CpuInfo::num_cores() * 4);
+        doris_scanner_thread_pool_thread_num = std::max(48, CpuInfo::num_cores() * 2);
     }
     return true;
 });