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