[轉]谁吃了我的Linux内存?

http://colobu.com/2017/03/07/what-is-in-linux-cached/#more


slabtop -s c

======================

pcstat

https://github.com/tobert/pcstat

#!/bin/bash



#you have to install pcstat

if [ ! -f /data0/brokerproxy/pcstat ]

then

    echo "You haven't installed pcstat yet"

    echo "run \"go get github.com/tobert/pcstat\" to install"

    exit

fi



#find the top 10 processs' cache file

ps -e -o pid,rss|sort -nk2 -r|head -10 |awk '{print $1}'>/tmp/cache.pids

#find all the processs' cache file

#ps -e -o pid>/tmp/cache.pids



if [ -f /tmp/cache.files ]

then

    echo "the cache.files is exist, removing now "

    rm -f /tmp/cache.files

fi



while read line

do

    lsof -p $line 2>/dev/null|awk '{print $9}' >>/tmp/cache.files 

done</tmp/cache.pids





if [ -f /tmp/cache.pcstat ]

then

    echo "the cache.pcstat is exist, removing now"



    rm -f /tmp/cache.pcstat

fi



for i in `cat /tmp/cache.files`

do



    if [ -f $i ]

    then



        echo $i >>/tmp/cache.pcstat

    fi

done



/data0/brokerproxy/pcstat  `cat /tmp/cache.pcstat`



rm -f /tmp/cache.{pids,files,pcstat}