欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  网络运营

Shell脚本查看进程内存真实占用情况

程序员文章站 2022-06-13 17:18:36
复制代码 代码如下: #!/bin/bash #************************************************************...

复制代码 代码如下:

#!/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