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

…28640 (#30030) follow up #28640, doris_scanner_thread_pool_thread_num may be to large in machines with 128 cores.
apache · Jan 16, 2024 · a0355a6 · a0355a6
1 parent 4e41e1d
commit a0355a6
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;
 });