Aix to view processes with high memory footprint

1, arranging 10 memory utilization processes from large to small

Ps aux | head-1; ps aux | sort-rn + 3 | head-10

For example, check the process in detail:

Ps-ealf | head-1; ps-ealf | sort-rn + 9 | head-1 ps aux | head-1 Ps aux | sort-rn + 3 | head-10USER PID% CPU% MEM SZ RSS TTY STAT STIME TIME COMMANDroot 6553834 0.1 115064 115080-A Feb 20 86:08 / var/opt/tivoliroot 5701730 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 0.0 796 824 pts/0 A 11:29:26 ps auxroot 6488234 0.000. 0 260 268-A Mar 13 0:02 auditbinroot 6357208 0.0 0.0236 248 pts/0 A 11:29:26 0:00 sort-rn + 3root 5963962 0.0 1768 1804-A Feb 20 0:00 / usr/sbin/rsct/root 5832798 0.0 836 856-A 11:29:12 telnetd-aroot 5570748 0.00.02128 2096-A Feb 20 0:00 / usr/sbin/rsct/root 5308652 0.0 7328 7436-A Feb 20 1:01 / usr/sbin/rsct/

2. View memory usage based on a command or process name

# ps aux | head-1; ps aux | grep topas

For more information, please see:

USER PID% CPU% MEM SZ RSS TTY STAT STIME TIME COMMANDroot 2359426 0.0 1440 1272-A Feb 20 1:08 / usr/bin/topasrroot 6160578 0.0 252 264 pts/0 A 11:36:45 0:00 grep topas

But sometimes ps aux does not show the full utilization of the process in great detail.

3. Memory usage can be analyzed by root users and svmon users.

# svmon-Gsize inuse free pin virtual mmodememory 1048576 1037487 11089 229668 378796 Dedpg space 2097152 2360work pers clnt otherpin 196952 00 32716in use 378796 0 658691PageSize PoolSize inuse pgsp pin virtuals 4 KB-793327 2360 49188 134636m 64 KB-15260 011280 15260

Inuse: physical memory usage, which is measured in 4K, so 103748740964249546752 (424m)

Virtual: virtual memory usage, here is 4K, so 37879640961551548416 (155m)

4, showing the three processes that use the most physical memory:

# svmon-uP-t 3 | grep-p Pid | grep'^. * [0-9] '6553834 java 51279 8917 0 50938 N Y N4456680 java 34626 8874 034608 N Y N5701730 BESClient 29564 8882 025689 Y Y N

The format order of the output is Pid Command Inuse Pin Pgsp Virtual 64-bit Mthrd

It can be calculated that the real memory used by the X program is 51279 × 4096mm 210038784, which is about 210MB.

5, showing the three processes that use the most physical memory in the swap area

# 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

The swap area used by the first program X is about 26782 × 4096 = 10510336 bytes, which is about 10MB space.

6, showing the most used segments every three seconds

# svmon-S-t 3-I 3Vsid Esid Type Description Inuse Pin Pgsp Virtual4f08-clnt 37505 0-11e1-clnt 33623 0-8811-work kernel pinned heap 12637 6547 8091 19397

It can be seen that the segments whose Vsid is 4f08 are most used.

7 Svmon-pP 22674

See what files are used by processes with a PID of 22674

Pid Command nuse Pin Pgsp Virtual 64-bit Mthrd22674 java 29333 1611 2756 32404 N YVsid Esid Type Description Inuse Pin Pgsp Virtual0 0 work kernel seg 2979 1593 1659 4561a056-work 43 16 3 461e03 2 work process private 77 2 17 931080-pers / dev/hd2:69742 10-- f8bd f work shared library data 84 011 9960ee 8 work shmat/mmap 2000 070ec-pers / dev/hd2:69836 10--

8. Check which files are used by Vsid through the ncheck command.

Ncheck a056

View the total physical memory

# cat mem1. Echo echo mem totle: "echo $totalmem MBecho" (echo-v | head-n 1 | awk'{print $1bot 256}')

Check the amount of physical memory occupied by each user

# cat mem2.shusermem=$ (for username in `cat / etc/passwd | awk-F:'{print $1} '`dosvmon-U $username | grep $username "" done) usermem= `echo "$usermem" | grep-v "0000" | awk' {print $1ZR 2256, "MB"} '`echo "singe user pmem" echo "$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 MBecho

Check the amount of memory occupied by system, user and file system under AIX5.3

#! / usr/bin/ksh# check the total amount of memory: totalmem=$ (vmstat-v | head-n 1 | awk'{print $1max 256}') echo "Total memory (physical memory):" echo $totalmem MBecho# View the memory used by each user: usermem=$ (for username in `memory / etc/passwd | awk-F:'{print $1} '`dosvmon-U $username | grep $username "" done) usermem= `echo "$usermem" | grep-v "0000" | awk' {print $1cr 2256 MB " "MB"} '`echo "user memory (physical memory):" echo "$usermem" usermem=$ (echo "$usermem" | awk' BEGIN {sum1=0) } {sum1=sum1+$2;} END {print sum1;}') usermem=$ (echo $usermem | awk-F\. '{print $1}') total user memory (physical memory): "$usermem MBecho# view file system cache: clientmem1= `svmon-G | grep" ^ pin "| awk'{print $4} '`clientmem2= `svmon-G | grep" ^ in use "| awk' {print $5} '`clientmem= `expr $clientmem1 + $clientm em2`clientmem = `expr $clientmem / 256`echo" File system cache (physical memory): "echo $clientmem MBecho# View system memory: sysmem=$ (svmon-S-s-u | cut-b-54-| grep-v" 0 00 "| 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 "system memory (physical memory):" echo $sysmem MBecho# View Free memory: freemem=$ (vmstat-v | grep free | awk' {print $1q256}') echo "Free memory (physical memory):" freemem=$ (echo $freemem | awk-F\. '{print $1}') echo $freemem MBecho