topic Re: Reporting free memory in Operating System - HP-UX

Reporting free memory

Gavin Stewart — Mon, 08 Nov 2004 09:19:25 GMT

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.

Re: Reporting free memory

Steven E. Protter — Mon, 08 Nov 2004 09:26:32 GMT

lots of ways.

swapinfo -tam

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

SEP

Re: Reporting free memory

Sridhar Bhaskarla — Mon, 08 Nov 2004 09:29:17 GMT

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

Re: Reporting free memory

Alzhy — Mon, 08 Nov 2004 09:45:35 GMT

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.

Re: Reporting free memory

Steve Steel — Mon, 08 Nov 2004 09:47:54 GMT

Hi

Look at

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

Steve Steel

Re: Reporting free memory

Geoff Wild — Mon, 08 Nov 2004 14:06:31 GMT

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