topic Re: memory utilization with SAR in Operating System - HP-UX

memory utilization with SAR

Mark Harshman_1 — Wed, 17 Aug 2005 11:07:25 GMT

is there a way to get memory utilization out of sar files? i've looked but cant seem to find it. I'm running HPUX11i. thanks

Re: memory utilization with SAR

Pete Randall — Wed, 17 Aug 2005 11:13:46 GMT

Mark,

I don't believe so. I've never seen it.

Pete

Re: memory utilization with SAR

Geoff Wild — Wed, 17 Aug 2005 11:17:50 GMT

Nope...no memory stats in sar...

Glance, Top, perfview/Measure Ware will do.

I do this daily:

/opt/perf/bin/extract -xp -r /home/gwild/zgbltemplate -g -b today 7:00 -e today 18:00 -f stdout | /bin/mailx -s 'Myserver performance report' gwild@mydomaiin.com

# cat /home/gwild/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
GBL_MEM_PAGEOUT_RATE
GBL_MEM_SWAPOUT_RATE
GBL_MEM_QUEUE

I also use a compile program called memdetail

# memdetail
Memory Stat total used avail %used
physical 10080.0 10039.4 40.6 100%
active virtual 13168.3 5106.1 8062.2 39%
active real 7732.3 2602.9 5129.4 34%
memory swap 7693.0 1650.4 6042.6 21%
device swap 26528.0 12504.2 14023.8 47%

I attached the c code.

Rgds...Geoff

Re: memory utilization with SAR

Geoff Wild — Wed, 17 Aug 2005 12:03:51 GMT

Oh - you can use vmstat...

And here's a script:

# cat memused
#!/bin/sh
typeset -i free used total percent
free=`vmstat 1 2 | tail -1 | awk '{print ($5*4)/1024}'`
total=`echo 'phys_mem_pages/D'|adb /stand/vmunix /dev/kmem|grep pages | tail -1 | awk '{print $2*4/1024}'`
((used=$total-$free))
((percent=$used *100 / $total ))
print "used memory: $percent%"

Rgds...Geoff

Re: memory utilization with SAR

Sameer_Nirmal — Wed, 17 Aug 2005 12:26:56 GMT

No. Sar can't be used at all for getting memory utilization.

vmstat should be used instead. It show free physical memory in terms of pages. Multiply that number by the system page size (usually it is 4096 bytes )to get free memory. Then run dmesg, it shows the page size as well alongwith other physical memory details.

Re: memory utilization with SAR

Mark Harshman_1 — Wed, 17 Aug 2005 12:34:29 GMT

thanks for all the good info.

Re: memory utilization with SAR

Borislav Perkov — Thu, 18 Aug 2005 03:10:03 GMT

Hi,
Notify that if you used vmstat you must exclude the first line from its output because it is not valid presentation.
Regards,
Borislav