yshop3.0-RC2版本

rocketmqService/bin/cachedog.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+export PATH=$PATH:/sbin
+
+while true; do
+    nr_free_pages=`fgrep -A 10 Normal /proc/zoneinfo  |grep nr_free_pages  |awk -F ' ' '{print $2}'`
+    high=`fgrep -A 10 Normal /proc/zoneinfo  |grep high  |awk -F ' ' '{print $2}'`
+
+    NOW_DATE=`date +%D`
+    NOW_TIME=`date +%T`
+
+    if [ ${nr_free_pages} -le ${high} ]; then
+        sysctl -w vm.drop_caches=3
+        nr_free_pages_new=`fgrep -A 10 Normal /proc/zoneinfo  |grep nr_free_pages  |awk -F ' ' '{print $2}'`
+
+        printf "%s %s [CLEAN] nr_free_pages < high, clean cache. nr_free_pages=%s ====> nr_free_pages=%s\n" "${NOW_DATE}" "${NOW_TIME}" ${nr_free_pages} ${nr_free_pages_new}
+
+        sysctl -w vm.drop_caches=1
+        echo
+        echo
+        echo
+    else
+        printf "%s %s [NOTHING] nr_free_pages=%s high=%s\n" "${NOW_DATE}" "${NOW_TIME}" ${nr_free_pages} ${high}
+    fi
+
+    sleep 1
+done