SRH_CLEAN：shared_clean,共享的干净内存页的大小，这里指代码页等共享的部分，而没有包括共享内存的部分；
SWAP:指进程使用的swap空间的大小。
PAGETABLE：指进程的虚拟地址和物理地址映射时pagetable的大小。
所以对于oracle进程来说，一个进程占用内存的大小为：PRI_DIRTY+PRI_CLEAN+PAGETABLE，而SHR_CLEAN+SHR_DIRTY是对所有oracle进程共享的。
注意，如果没有大页管理（HugeTLB），oracle进程的pagetable可能消耗很大的内存。
排除共享内存的内存办法是cat /proc/
smaps中：60000000-103200000 rwxs 00000000 00:0d 3309576 /SYSVXXXX (deleted)
Size: 2672640 kB
Rss: xxxxxxx kB
Shared_Clean: xxxx kB
Shared_Dirty: xxxx kB
Private_Clean: xxxx kB
Private_Dirty: xxxx kB
Swap: 0 kB
文件名类似 “/SYSV”就是共享内存的部分，在脚本有把这部分排除出去，就可以了。
60000000-103200000 rwxs 00000000 00:0d 3309576 /12 (deleted)
Size: 2672640 kB
Rss: 0 kB
Shared_Clean: 0 kB
Shared_Dirty: 0 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
 |
| 文件: |
pm.zip |
| 大小: |
1KB |
| 下载: |
下载 | |
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
: 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
