Shell脚本查看进程内存真实占用情况

#!/bin/bash

#****************************************************************#

# ScriptName: pm

# Author: osdba

# Create Date: 2010-01-31

# Modify Author:

# Modify Date: 2010-01-31

# Function: show processes memory used

#***************************************************************#



function getpidmem()

{

cat /proc/$1/smaps 2>/dev/null |awk  /

'BEGIN{

   total_size=0;

   total_rss=0;

   total_shared_clean=0;

   total_shared_dirty=0;

   total_private_clean=0;

   total_private_dirty=0;

   total_swap=0;
   mem_size=0;

   mem_rss=0;

   mem_shared_clean=0;

   mem_shared_dirty=0;

   mem_private_clean=0;

   mem_private_dirty=0;

   mem_swap=0;

}

{

   if($1 ~ /^Size:/)

   { 

       mem_size=$2;

   }

   else if($1 ~ /^Rss:/)

   {

       mem_rss=$2;

   }

   else if($1 ~ /^Shared_Clean:/)

   {

       mem_shared_clean=$2;

   }

   else if($1 ~ /^Shared_Dirty:/)

   {

       mem_shared_dirty=$2;

   }

   else if($1 ~ /^Private_Clean:/)

   {

       mem_private_clean=$2;

   }

   else if($1 ~ /^Private_Dirty:/)

   {

       mem_private_dirty=$2;

   }

   else if($1 ~ /^Swap:/)

   {

       mem_swap=$2;

   }

   else

   {

       if(ipcmem_start==1)

       {

           ipc_size=mem_size;

           ipc_rss=mem_rss;

           ipc_shared_clean=mem_shared_clean;

           ipc_shared_dirty=mem_shared_dirty;

           ipc_private_clean=mem_private_clean;

           ipc_private_dirty=mem_private_dirty;

           ipc_swap=mem_swap;

       }

       else

       {

           total_size=total_size+mem_size;

           total_rss=total_rss+mem_rss;

           total_shared_clean=total_shared_clean+mem_shared_clean;

           total_shared_dirty=total_shared_dirty+mem_shared_dirty;

           total_private_clean=total_private_clean+mem_private_clean;

           total_private_dirty=total_private_dirty+mem_private_dirty;

           total_swap=total_swap+mem_swap;

       };

       if($6 ~ /^//SYSV/)

       {

           ipcmem_start=1;             

       }

       else

       {

           ipcmem_start=0;        

       };

   };

}

END{

   printf("%15d %15d %15d %15d %15d %15d/n",total_rss,total_private_clean,total_private_dirty,total_shared_clean,total_shared_dirty,total_swap);

}

'

}
function show_all_process_mem()

{

   TMPFILE=`/bin/mktemp -q`

   echo "   pid     RSS(KB)   PRIV_DIRTY PRIV_CLEAN SHR_DIRTY  SHR_CLEAN    SWAP     PAGETABLE      CMDLINE"

   echo "--------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------------"

   ls -ld /proc/[0-9]* |awk '{printf("%s/n",$NF)}' > $TMPFILE

   while read LINE

   do

       PID=`basename $LINE`

       cmdline=`ps -o command -p $PID |tail -1  |cut -b 1-26`

       pagetablesize=`cat /proc/$PID/status |grep "VmPTE:"|awk '{print $2}'`

       if [ "$pagetablesize" = "" ] ; then

           pagetablesize=0

       fi
       meminfoline=`getpidmem $PID`

       rss=`echo $meminfoline |awk '{print $1}'`

       private_clean=`echo $meminfoline |awk '{print $2}'`

       private_dirty=`echo $meminfoline |awk '{print $3}'`

       shared_dirty=`echo $meminfoline |awk '{print $4}'`

       shared_clean=`echo $meminfoline |awk '{print $5}'`

       swap=`echo $meminfoline |awk '{print $6}'`

       total_rss=$((total_rss+rss))

       total_private_clean=$((total_private_clean+private_clean))

       total_private_dirty=$((total_private_dirty+private_dirty))

       total_shared_dirty=$((total_shared_dirty+shared_dirty))

       total_shared_clean=$((total_rss+shared_clean))

       total_swap=$((total_swap+swap))

       total_pagetablesize=$((total_pagetablesize+pagetablesize))

       if [ "$1" = "-a" ] ;then

           echo $PID $meminfoline "$pagetablesize" "$cmdline"|awk /

           '{

             printf("%9d %10d %10d %10d %10d %10d %10d %10d %-26s/n",$1,$2,$3,$4,$5,$6,$7,$8,$9);

           }'

       fi

   done <$TMPFILE

   /bin/rm $TMPFILE
   echo $total_rss $total_private_clean $total_private_dirty $total_shared_dirty $total_shared_clean $total_swap $total_pagetablesize |awk /

   '{

       printf("   ALL    %10d %10d %10d %10d %10d %10d %10d/n",$1,$2,$3,$4,$5,$6,$7);

   }'

}


function print_usage()

{

   echo "usage:"

   echo "  pm.sh -a : display all process memory info"

   echo "  pm.sh -s : display total memory info"

   echo "  pm.sh -p <pid> : display pid memory info"

}
total_rss=0

total_private_clean=0

total_private_dirty=0

total_shared_dirty=0

total_shared_clean=0

total_swap=0

total_pagetablesize=0
if [ $# -lt 1 ];then

  print_usage;

  exit 1

fi
if [ "$1" = "-a" ];then

   show_all_process_mem $1;

   exit 0

fi

if [ "$1" = "-s" ];then

   show_all_process_mem $1;

   exit 0

fi
if [ "$1" = "-p" ];then

   if [ $# -ne 2 ];then

       print_usage;

       exit 1

   fi
   meminfoline=`getpidmem $2`

   cmdline=`ps -o command -p $2 |tail -1  |cut -b 1-26`

   pagetablesize=`cat /proc/$2/status |grep "VmPTE:"|awk '{print $2}'`

   if [ "$pagetablesize" = "" ]; then

       pagetablesize=0

   fi
   echo "   pid     RSS(KB)   PRIV_DIRTY PRIV_CLEAN SHR_DIRTY  SHR_CLEAN    SWAP     PAGETABLE     CMDLINE"

   echo "--------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------------"

   echo $2 $meminfoline "$pagetablesize" "$cmdline"|awk /

   '{

       printf("%9d %10d %10d %10d %10d %10d %10d %10d %-26s/n",$1,$2,$3,$4,$5,$6,$7,$8,$9);

   }'

   exit 0

fi