diff --git a/thread/test/perf_workpool.cpp b/thread/test/perf_workpool.cpp
index ae7ba9a6..20e15fe1 100644
--- a/thread/test/perf_workpool.cpp
+++ b/thread/test/perf_workpool.cpp
@@ -37,7 +37,7 @@ static void workload(uint64_t time_us) {
     do {
         auto diff = std::chrono::steady_clock::now() - start;
         diff_ns = std::chrono::duration_cast<std::chrono::nanoseconds>(diff).count();
-    } while (diff_ns < (long) time_us);
+    } while (diff_ns < (long) time_us * 1000);
 }
 
 static void task_async() {
@@ -143,4 +143,4 @@ int main(int argc, char** arg) {
              FLAGS_fires, FLAGS_vcpu_num,
              get_qps(start, end),
              sum_time.load() / FLAGS_fires);
-}
\ No newline at end of file
+}