1,从大到小排列10个内存使用率进程
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ps aux | head -1 ; ps aux | sort -rn +3 | head -10
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如详细查看进程:
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ps -ealf | head -1 ; ps -ealf | sort -rn +9 | head -10
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# ps aux | head -1 ; ps aux | sort -rn +3 | head -10 USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND root 6553834 0.1 3.0 115064 115080 - A Feb 20 86:08 /var/opt/tivoli
root 5701730 0.0 1.0 17480 21956 - A Mar 05 1:17 /opt/BESClient/
pconsole 4456680 0.0 1.0 42456 42464 - A Feb 20 3:11 /usr/java5/bin/
root 6750376 0.0 0.0 796 824 pts /0 A 11:29:26 0:00 ps aux
root 6488234 0.0 0.0 260 268 - A Mar 13 0:02 auditbin root 6357208 0.0 0.0 236 248 pts /0 A 11:29:26 0:00 sort -rn +3
root 5963962 0.0 0.0 1768 1804 - A Feb 20 0:00 /usr/sbin/rsct/
root 5832798 0.0 0.0 836 856 - A 11:29:12 0:00 telnetd -a root 5570748 0.0 0.0 2128 2096 - A Feb 20 0:00 /usr/sbin/rsct/
root 5308652 0.0 0.0 7328 7436 - A Feb 20 1:01 /usr/sbin/rsct/
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2,根据某个命令或进程名,查看内存使用率
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# ps aux | head -1 ; ps aux | grep topas |
如详细查看:
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USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND root 2359426 0.0 0.0 1440 1272 - A Feb 20 1:08 /usr/bin/topasr
root 6160578 0.0 0.0 252 264 pts /0 A 11:36:45 0:00 grep topas
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但有的时候ps aux并不能非常详细地表现出进程的完整使用率
3,通过root用户svmon用户可以分析出内存使用量
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# svmon -G size inuse free pin virtual mmode
memory 1048576 1037487 11089 229668 378796 Ded pg space 2097152 2360 work pers clnt other pin 196952 0 0 32716 in use 378796 0 658691
PageSize PoolSize inuse pgsp pin virtual s 4 KB - 793327 2360 49188 134636 m 64 KB - 15260 0 11280 15260 |
inuse:是物理内存使用量,这里是以4K为单位,所以 1037487*4096=4249546752(424M)
virtual:是虚拟内存使用量,这里是以4K为单位,所以 378796*4096=1551548416(155M)
4,显示使用物理内存最多的3个进程:
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# svmon -uP -t 3|grep -p Pid|grep '^.*[0-9] ' 6553834 java 51279 8917 0 50938 N Y N 4456680 java 34626 8874 0 34608 N Y N 5701730 BESClient 29564 8882 0 25689 Y Y N |
输出的格式顺序为 Pid Command Inuse Pin Pgsp Virtual 64-bit Mthrd
可以计算出X程序所使用的实存为51279×4096=210038784,约为210MB
5,显示交换区使用物理内存最多的3个进程
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# svmon -gP -t 3|grep -p Pid|grep '^.*[0-9] ' 1966206 shlap64 26782 8880 0 26771 Y N N 0 swapper 9872 8912 0 9872 Y N N 1 init 22094 8836 0 22076 N N N |
第一个程序X所使用的交换区大小约为 26782×4096 =10510336 字节,大约为10MB空间
6,每隔三秒显示使用最多的段
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# svmon -S -t 3 -i 3 Vsid Esid Type Description Inuse Pin Pgsp Virtual 4f08 - clnt 37505 0 - - 11e1 - clnt 33623 0 - - 8811 - work kernel pinned heap 12637 6547 8091 19397 |
可见,Vsid为4f08的段使用最多
7,svmon -pP 22674
看PID为22674的进程所使用的为那些文件
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Pid Command nuse Pin Pgsp Virtual 64-bit Mthrd 22674 java 29333 1611 2756 32404 N Y Vsid Esid Type Description Inuse Pin Pgsp Virtual 0 0 work kernel seg 2979 1593 1659 4561 a056 - work 43 16 3 46 1e03 2 work process private 77 2 17 93 1080 - pers /dev/hd2 :69742 1 0 - -
f8bd f work shared library data 84 0 11 99 60ee 8 work shmat /mmap 0 0 0 0
70ec - pers /dev/hd2 :69836 1 0 - -
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8,通过ncheck命令,检查Vsid都使用了哪些文件。
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ncheck a056 |
查看物理内存总量
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# cat mem1.sh #!/usr/bin/ksh #mem totle totalmem=$(vmstat - v | head -n 1| awk '{print $1/256}' )
echo "mem totle:"
echo $totalmem MB
echo |
查看每个用户占用物理内存的数量
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# cat mem2.sh usermem=$( for username in ` cat /etc/passwd | awk -F: '{print $1}' `
do svmon -U $username| grep $username " "
done )
usermem=` echo "$usermem" | grep - v "0 0 0 0" | awk '{print $1,$2/256,"MB"}' `
echo "singe user pmem"
echo "$usermem"
usermem=$( echo "$usermem" | awk 'BEGIN{sum1=0;}{sum1=sum1+$2;}END{print sum1;}' )
usermem=$( echo $usermem| awk -F\. '{print $1}' )
echo "singe user pmem :" $usermem MB
echo |
AIX5.3下查看系统、用户、文件系统占用内存数量
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#!/usr/bin/ksh #查看总的内存数量: totalmem=$(vmstat - v | head -n 1| awk '{print $1/256}' )
echo "总内存(物理内存):"
echo $totalmem MB
echo #查看各用户使用的内存: usermem=$( for username in ` cat /etc/passwd | awk -F: '{print $1}' `
do svmon -U $username| grep $username " "
done )
usermem=` echo "$usermem" | grep - v "0 0 0 0" | awk '{print $1,$2/256,"MB"}' `
echo "各用户内存(物理内存):"
echo "$usermem"
usermem=$( echo "$usermem" | awk 'BEGIN{sum1=0;}{sum1=sum1+$2;}END{print sum1;}'
) usermem=$( echo $usermem| awk -F\. '{print $1}' )
echo "用户内存(物理内存)合计:" $usermem MB
echo #查看文件系统缓存: clientmem1=`svmon -G| grep "^pin" | awk '{print $4}' `
clientmem2=`svmon -G| grep "^in use" | awk '{print $5}' `
clientmem=` expr $clientmem1 + $clientmem2`
clientmem=` expr $clientmem / 256`
echo "文件系统缓存(物理内存):"
echo $clientmem MB
echo #查看系统使用内存: sysmem=$(svmon -S -s -u| cut -b 54-| grep - v "0 0 0 0" | grep [0-9]| awk '{print $1,$2}' )
supremeseg=` echo "$sysmem" | grep S| awk 'BEGIN{sum1=0;}{sum1=sum1+$2;}END{sum1=sum1*16*1024*1024;print sum1;}' `
largeseg=` echo "$sysmem" | grep L| awk 'BEGIN{sum1=0;}{sum1=sum1+$2;}END{sum1=sum1*16*1024;print sum1;}' `
mediumseg=` echo "$sysmem" | grep m| awk 'BEGIN{sum1=0;}{sum1=sum1+$2;}END{sum1=sum1*64;print sum1;}' `
smallseg=` echo "$sysmem" | grep s| awk 'BEGIN{sum1=0;}{sum1=sum1+$2;}END{sum1=sum1*4;print sum1;}' `
sysmem=$( expr $supremeseg + $largeseg + $mediumseg + $smallseg)
sysmem=$( expr $sysmem / 1024)
echo "系统内存(物理内存):"
echo $sysmem MB
echo #查看空闲内存: freemem=$(vmstat - v | grep free | awk '{print $1/256}' )
echo "空闲内存(物理内存):"
freemem=$( echo $freemem| awk -F\. '{print $1}' )
echo $freemem MB
echo
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本文转自lq201151CTO博客,原文链接:http://blog.51cto.com/liuqun/2046198 ,如需转载请自行联系原作者