Reporting free memory

[Gavin Stewart]

Hi,

I need to report on memory usuage over a monthly period, say every 30mins.

As Sar does not provide this can anyone recommend an easy way to do this? Does someone have a script that maybe uses vmstat to get these statistics? Ideally it needs to show used memory as a percentage.

Any advice apreciated.

Thanks.

[Steven E. Protter]

lots of ways.

swapinfo -tam

The memory portion of the sar script set I'm attaching can also be quite useful.

SEP

[Sridhar Bhaskarla · Accepted solution]

Hi Gavin,

From vmstat, you get 'free pages'. Multiply it with '4' to get it in KB. You would already know memory size of the system. Or use the following script.

#!/usr/bin/ksh

FREE=$(vmstat 2 1 |awk '{print $5}'|tail -1)
TOTMEM=$(echo "phys_mem_pages/D" |adb -k /stand/vmunix /dev/mem|tail -1|awk '{FS=":";print $2}')
(( PERCENT = $FREE * 100 / $TOTMEM ))
echo "Free memory is $PERCENT %"

-Sri

[Alzhy]

If your environment is HP-UX Enterprise (ie your running a SuperDome or any of the Cell-Partionables).. you already have Measureware (now named HP OVPA). In its default config .. it's been gathering stats for you. TO get to the reports.. simply type "extract" -- and everything should be self explanatory.


Your other options.. glance -m, swapinfo and vmstat as others have already pointed out.

[Steve Steel]

Hi


Look at

ftp://eh:spear9@hprc.external.hp.com/memory.htm



Steve Steel

[Geoff Wild]

I get it from measureware:

# cat zgbltemplate
REPORT "MWA Export on !SYSTEM_ID"
FORMAT ASCII
HEADINGS ON
SEPARATOR="|"
SUMMARY=60
MISSING=0
DATA TYPE GLOBAL
YEAR
DATE
TIME
GBL_CPU_TOTAL_UTIL
GBL_MEM_UTIL
GBL_SWAP_SPACE_UTIL
GBL_MEM_CACHE_HIT_PCT
GBL_DISK_UTIL_PEAK
GBL_FS_SPACE_UTIL_PEAK


crontab -l
55 23 * * 1-5 /opt/perf/bin/extract -xp -r /home/gwild/zgbltemplate -g -b today 7:00 -e today 18:00 -f stdout | /bin/mailx -s 'svr1000 performance report' gwild@mydomain.com >/dev/null 2>&1

Output like:

MWA Export on svr1000
| | | |Memory| |Cache | Peak | Pk FS |
Year| Date |Time |CPU % | % |Swap %|Hit % |Disk %| Sp % |
2004|11/05/04|07:00| 46.14| 99.66| 48.00| 88.17| 45.97| 99.64|
2004|11/05/04|07:05| 12.71| 98.52| 48.00| 96.07| 5.79| 99.64|
2004|11/05/04|07:10| 11.02| 98.63| 48.00| 99.09| 5.65| 99.64|
2004|11/05/04|07:15| 13.83| 98.89| 48.00| 95.49| 11.78| 99.64|
2004|11/05/04|07:20| 29.16| 97.74| 48.00| 89.26| 25.27| 99.64|
2004|11/05/04|07:25| 9.52| 97.83| 48.00| 97.76| 5.07| 99.64|
2004|11/05/04|07:30| 12.87| 97.96| 48.00| 97.96| 6.68| 99.64|

Rgds...Geoff