diff --git a/0001-optimize-cause-location-with-time-delay.patch b/0001-optimize-cause-location-with-time-delay.patch
new file mode 100644
index 0000000..2030464
--- /dev/null
+++ b/0001-optimize-cause-location-with-time-delay.patch
@@ -0,0 +1,88 @@
+From be8f48eed633d99aaf9eadd25d7562391d0807b9 Mon Sep 17 00:00:00 2001
+From: algorithmofdish <hexiujun1@huawei.com>
+Date: Wed, 14 Dec 2022 15:30:06 +0800
+Subject: [PATCH] perf(infer): optimize cause location with time delay
+
+---
+ cause_inference/abnormal_event.py |  8 ++++++++
+ cause_inference/cause_infer.py    | 11 ++++++++---
+ 2 files changed, 16 insertions(+), 3 deletions(-)
+
+diff --git a/cause_inference/abnormal_event.py b/cause_inference/abnormal_event.py
+index f55c3d0..599d72d 100644
+--- a/cause_inference/abnormal_event.py
++++ b/cause_inference/abnormal_event.py
+@@ -2,6 +2,7 @@ import json
+ from enum import Enum
+ from queue import Queue, Empty
+ from typing import List
++import time
+ 
+ from kafka import KafkaConsumer
+ 
+@@ -37,6 +38,7 @@ class AbnEvtMgt:
+         except Empty as ex:
+             raise NoKpiEventException from ex
+ 
++        self.wait_future_evts(abn_kpi.timestamp)
+         self.consume_kpi_evts_with_deadline(abn_kpi.timestamp)
+         self.consume_metric_evts_with_deadline(abn_kpi.timestamp)
+         self.clear_aging_evts(abn_kpi.timestamp)
+@@ -145,6 +147,12 @@ class AbnEvtMgt:
+     def is_future(self, evt_ts, cur_ts):
+         return evt_ts > cur_ts + self.future_duration
+ 
++    def wait_future_evts(self, evt_ts):
++        cur_ts = int(time.time()) * 1000
++        if evt_ts <= cur_ts < evt_ts + self.future_duration:
++            wait_sec = (evt_ts + self.future_duration - cur_ts) // 1000
++            time.sleep(wait_sec)
++
+ 
+ def preprocess_abn_score(score):
+     return max(0, score)
+diff --git a/cause_inference/cause_infer.py b/cause_inference/cause_infer.py
+index 82a83e1..b22768f 100644
+--- a/cause_inference/cause_infer.py
++++ b/cause_inference/cause_infer.py
+@@ -58,10 +58,14 @@ class CauseLocator:
+     @staticmethod
+     def filter_causes(causes: List[Cause]) -> List[Cause]:
+         res = []
++        dup = set()
+         for cause in causes:
+             filtered_cause = CauseLocator.clear_virtual_cause(cause)
+             if filtered_cause is not None:
+-                res.append(filtered_cause)
++                key = (filtered_cause.metric_id, filtered_cause.entity_id)
++                if key not in dup:
++                    dup.add(key)
++                    res.append(filtered_cause)
+         return res
+ 
+     def construct_causal_graph(self, entity_causal_relations: List[tuple], abn_metrics: List[AbnormalEvent],
+@@ -106,10 +110,11 @@ class CauseLocator:
+         self.topo_ts = self.topo_db_mgt.query_recent_topo_ts(self.abn_kpi.timestamp // 1000)
+ 
+     def calc_corr_score(self, causal_graph: CausalGraph):
++        end_ts = self.abn_kpi.timestamp // 1000 + infer_config.infer_conf.get('evt_future_duration')
+         if not self.abn_kpi.hist_data:
+             hist_data = self.metric_db_mgt.query_metric_hist_data(self.abn_kpi.abnormal_metric_id,
+                                                                   self.abn_kpi.metric_labels,
+-                                                                  self.topo_ts)
++                                                                  end_ts)
+             self.abn_kpi.set_hist_data(hist_data)
+ 
+         for node_id, node_attrs in causal_graph.entity_cause_graph.nodes.items():
+@@ -120,7 +125,7 @@ class CauseLocator:
+ 
+             abn_metrics = causal_graph.get_abnormal_metrics(node_id)
+             for metric_id, metric_attrs in abn_metrics.items():
+-                metric_hist_data = self.metric_db_mgt.query_metric_hist_data(metric_id, metric_labels, self.topo_ts)
++                metric_hist_data = self.metric_db_mgt.query_metric_hist_data(metric_id, metric_labels, end_ts)
+ 
+                 data_trend = trend(metric_hist_data)
+                 metric_attrs.setdefault('real_trend', data_trend)
+-- 
+2.21.0.windows.1
+
diff --git a/gala-spider.spec b/gala-spider.spec
index 9b490de..8ef1655 100644
--- a/gala-spider.spec
+++ b/gala-spider.spec
@@ -2,7 +2,7 @@
 
 Name:           gala-spider
 Version:        1.0.1
-Release:        1
+Release:        2
 Summary:        OS topological graph storage service and cause inference service for gala-ops project
 License:        MulanPSL2
 URL:            https://gitee.com/openeuler/gala-spider
@@ -11,6 +11,8 @@ Source0:        %{name}-%{version}.tar.gz
 BuildRequires:  python3-setuptools systemd
 Requires:       python3-%{name} = %{version}-%{release}
 
+patch0:         0001-optimize-cause-location-with-time-delay.patch
+
 
 %description
 OS topological graph storage service for gala-ops project
@@ -122,6 +124,9 @@ fi
 
 
 %changelog
+* Thu Dec 15 2022 algorithmofdish <hexiujun1@huawei.com> - 1.0.1-2
+- Optimize cause location with time delay
+
 * Wed Dec 14 2022 algorithmofdish <hexiujun1@huawei.com> - 1.0.1-1
 - Update to 1.0.1: support cross host cause location