diff --git a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/common/config/ThreadPoolConfig.java b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/common/config/ThreadPoolConfig.java
index 5762f0ce..6ec3f08f 100644
--- a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/common/config/ThreadPoolConfig.java
+++ b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/common/config/ThreadPoolConfig.java
@@ -28,8 +28,8 @@ public class ThreadPoolConfig {
     @Bean("omsTimingPool")
     public Executor getTimingPool() {
         ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
-        executor.setCorePoolSize(Runtime.getRuntime().availableProcessors() * 16);
-        executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 32);
+        executor.setCorePoolSize(Runtime.getRuntime().availableProcessors());
+        executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 4);
         // use SynchronousQueue
         executor.setQueueCapacity(0);
         executor.setKeepAliveSeconds(60);
diff --git a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/InstanceStatusCheckService.java b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/InstanceStatusCheckService.java
index ddea791e..8ba71733 100644
--- a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/InstanceStatusCheckService.java
+++ b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/InstanceStatusCheckService.java
@@ -60,7 +60,7 @@ public class InstanceStatusCheckService {
     private WorkflowInstanceInfoRepository workflowInstanceInfoRepository;
 
     @Async("omsTimingPool")
-    @Scheduled(fixedRate = 10000)
+    @Scheduled(fixedDelay = 10000)
     public void timingStatusCheck() {
         Stopwatch stopwatch = Stopwatch.createStarted();
 
@@ -115,7 +115,7 @@ public class InstanceStatusCheckService {
             threshold = System.currentTimeMillis() - RECEIVE_TIMEOUT_MS;
             List<InstanceInfoDO> waitingWorkerReceiveInstances = instanceInfoRepository.findByAppIdInAndStatusAndActualTriggerTimeLessThan(partAppIds, InstanceStatus.WAITING_WORKER_RECEIVE.getV(), threshold);
             if (!CollectionUtils.isEmpty(waitingWorkerReceiveInstances)) {
-                log.warn("[InstanceStatusChecker] instances({}) didn't receive any reply from worker.", waitingWorkerReceiveInstances);
+                log.warn("[InstanceStatusChecker] find one instance didn't receive any reply from worker, try to redispatch: {}", waitingWorkerReceiveInstances);
                 waitingWorkerReceiveInstances.forEach(instance -> {
                     // 重新派发
                     JobInfoDO jobInfoDO = jobInfoRepository.findById(instance.getJobId()).orElseGet(JobInfoDO::new);
diff --git a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/schedule/OmsScheduleService.java b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/schedule/OmsScheduleService.java
index 144af178..c8a4e383 100644
--- a/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/schedule/OmsScheduleService.java
+++ b/powerjob-server/src/main/java/com/github/kfcfans/powerjob/server/service/timing/schedule/OmsScheduleService.java
@@ -133,7 +133,7 @@ public class OmsScheduleService {
 
                 // 1. 批量写日志表
                 Map<Long, Long> jobId2InstanceId = Maps.newHashMap();
-                log.info("[CronScheduler] These cron jobs will be scheduled： {}.", jobInfos);
+                log.info("[CronScheduler] These cron jobs will be scheduled: {}.", jobInfos);
 
                 jobInfos.forEach(jobInfo -> {
                     Long instanceId = instanceService.create(jobInfo.getId(), jobInfo.getAppId(), null, null, jobInfo.getNextTriggerTime());