diff --git a/tools/load_tester.cpp b/tools/load_tester.cpp
index 785d184..e4a751a 100644
--- a/tools/load_tester.cpp
+++ b/tools/load_tester.cpp
@@ -123,10 +123,10 @@ int getConnectFdUnix(const char *socket_name) {
 }
 
 struct Config {
-  int concurrency = 1000;
+  int concurrency = 64;
   int requests_per_connection = 1;
-  int connect_threads = 0; // 0 means auto-calculate
-  int network_threads = 0; // 0 means auto-calculate
+  int connect_threads = 4;
+  int network_threads = 4;
   int event_batch_size = 32;
   int connection_buf_size = 1024;
   std::string host = "";
@@ -432,9 +432,9 @@ void print_usage(const char *program_name) {
          "(default: 1)\n");
   printf("\nThread options:\n");
   printf("  --connect-threads N       Number of connect threads (default: "
-         "auto)\n");
+         "4)\n");
   printf("  --network-threads N       Number of network threads (default: "
-         "auto)\n");
+         "4)\n");
   printf("\nPerformance options:\n");
   printf("  --event-batch-size N      Epoll event batch size (default: 32)\n");
   printf(
@@ -552,14 +552,6 @@ void parse_args(int argc, char *argv[]) {
                     "connections\n");
     exit(1);
   }
-
-  // Auto-calculate thread counts if not specified
-  if (g_config.connect_threads == 0) {
-    g_config.connect_threads = std::min(2, g_config.concurrency);
-  }
-  if (g_config.network_threads == 0) {
-    g_config.network_threads = std::min(8, g_config.concurrency);
-  }
 }
 
 int main(int argc, char *argv[]) {