diff --git a/src/performanceMgr/c_program/cstaCollector/csta.c b/src/performanceMgr/c_program/cstaCollector/csta.c
index 38d44ec..7ce5ab5 100644
--- a/src/performanceMgr/c_program/cstaCollector/csta.c
+++ b/src/performanceMgr/c_program/cstaCollector/csta.c
@@ -72,6 +72,10 @@ char csv_sent_dir[128];
 char csv_sending_dir[128];
 int csv_send_flag=0;
 
+// csta keep days setting, by simon begin ---
+int max_keep_days = RECORD_KEEP_DAY
+// --- end
+
 int csta_init()
 {
 	csta_log("cstaCollector starting ...");
@@ -698,6 +702,24 @@ int cstasrc_init()
 	}
 	csta_log("CSV sent direcory=%s",csv_sent_dir);
 
+	// Get max_keep_days
+	sprintf(sqlstr, "SELECT pubVarValue FROM %s.cstaPubVarConf WHERE pubVarName='max_keep_days' ", CSTA_DB);
+	res_set = mysql_getres(pCstaConn, sqlstr);
+	if (res_set == NULL)
+	{
+		csta_log("max_keep_days, set default: %d", max_keep_days);
+	}
+	else
+	{
+		row = mysql_fetch_row(res_set);
+		if (row != NULL && strlen(row[0]) != 0)
+		{
+			max_keep_days = atoi(row[0]);
+		}
+		mysql_free_result(res_set);
+	}
+	csta_log("max_keep_days=%d", max_keep_days);
+
 	csv_send_flag=0;
 	sprintf(sqlstr,"SELECT pubVarValue FROM OMC_PUB.omcPubVarConf WHERE pubVarName='csta_store_server'");
 	res_set=mysql_getres(pCstaConn,sqlstr);
@@ -1667,9 +1689,11 @@ int csta_create_csv()
 			}
 		}
 	}
-	
-	//Delete the over-time record
-	l_time=time(NULL) - RECORD_KEEP_DAY * 24 * 60 * 60;
+
+	// by simon begin --- 
+	// Delete the over-time record
+	l_time = time(NULL) - max_keep_days * 24 * 60 * 60;
+	// --- end
 	t=localtime(&l_time);
 	sprintf(tablename,"%sData",pcsta->objects[0].detail_table);
 	sprintf(sqlstr,"DELETE FROM %s.%s WHERE csta_datetime < '%04d-%02d-%02d 00:00:00' ",
@@ -1686,7 +1710,9 @@ int csta_create_csv()
 	
 	if(pcsta->sum_flag)
 	{
-		l_time=time(NULL) - RECORD_KEEP_DAY * 24 * 60 * 60;
+		// by simon begin ---
+		l_time = time(NULL) - max_keep_days * 24 * 60 * 60;
+		// --- end
 		t=localtime(&l_time);
 		sprintf(tablename,"%sData",pcsta->objects[0].sum_table);
 		sprintf(sqlstr,"DELETE FROM %s.%s WHERE csta_datetime < '%04d-%02d-%02d 00:00:00' ",