查看swap被占用的情況

#!/bin/bash

# Get current swap usage for all running processes

# Erik Ljungstrom 27/05/2011

# http://northernmost.org/blog/find-out-what-is-using-your-swap/

SUM=0

OVERALL=0

for DIR in `find /proc/ -maxdepth 1 -type d | egrep "^/proc/[0-9]"` ; do

PID=`echo $DIR | cut -d / -f 3`

PROGNAME=`ps -p $PID -o comm --no-headers`

for SWAP in `grep Swap $DIR/smaps 2>/dev/null| awk '{ print $2 }'`

do

let SUM=$SUM+$SWAP

done

echo "PID=$PID - Swap used: $SUM - ($PROGNAME )"

let OVERALL=$OVERALL+$SUM

SUM=0

done

echo "Overall swap used: $OVERALL"

使用：

[root@standby ~]# ./swap.sh |sort -nr -k 5 |head -10

PID=13899 - Swap used: 2071424 - ([ET_NET 0] )

PID=4124 - Swap used: 741224 - (nginx )

PID=19965 - Swap used: 741212 - (nginx )

PID=19960 - Swap used: 741212 - (nginx )

PID=19969 - Swap used: 741172 - (nginx )

PID=19968 - Swap used: 741172 - (nginx )

PID=19967 - Swap used: 741172 - (nginx )

PID=19966 - Swap used: 741172 - (nginx )

PID=19964 - Swap used: 741172 - (nginx )

PID=19962 - Swap used: 741172 - (nginx )

[root@standby ~]#

查看指定進程的swap占用情況

#!/bin/bash

# Get current swap usage for input process.

# 71standby@gmail.com

function Usage()

{

echo -e "Usage: /bin/sh $0 keyword \n \

keyword: which to match the process that you wanna statistics.\n \

Example: 'traffic' will match the traffic_cop,traffic_manager,traffic_server and so on."

exit 2

}

function Statistics()

{

SUM=0

OVERALL=0

for PID in `ps -ef |grep $1 |grep -v grep |grep -v $0 |awk '{print $2}'`; do

PROGNAME=`ps -p $PID -o comm --no-headers`

DIR=/proc/$PID/smaps

for SWAP in `grep Swap $DIR 2>/dev/null| awk '{ print $2 }'`; do

let SUM=$SUM+$SWAP

done

echo "PID=$PID - Swap used: $SUM - ($PROGNAME)"

let OVERALL=$OVERALL+$SUM

SUM=0

done

echo "$1 swap used: $OVERALL"

}

if [ $# -ne 1 ]; then

Usage

else

Statistics $1

fi

使用：

[root@standby ~]# ./swap_show.sh traffic

PID=48575 - Swap used: 764 - (traffic_cop)

PID=48577 - Swap used: 12948 - (traffic_manager)

PID=48588 - Swap used: 3823100 - ([ET_NET 0])

traffic swap used: 3836812

[root@standby ~]#

總結

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