How to convert the values displayed by sar -r with top
 

Hi

I would like to know the formula to convert the o/p shown by sar -r with top in case of Freememory & Swapmemory.

top
_______________________________________________
load averages: 0.33, 0.38, 0.41 03:30:01
69 processes: 67 sleeping, 1 zombie, 1 on cpu
CPU states: 80.1% idle, 8.1% user, 11.8% kernel, 0.0% iowait, 0.0% swap
Memory: 8192M real, 1102M free, 5136M swap in use, 4771M swap free



sar -r
_____________________________________________________

00:00:00 freemem freeswap
03:30:00 71058 4893162


I want to know how I can convert 71058 & 4893162 in Memory/Swap in MB.

Thanks
Rajan

freemem*pagesize=free memory
freeswap*block size=free swap

pagesize is normally 4 kbytes on x86 and 8 kbytes on SPARC
block size is 512 bytes.

Hi

Thanks for your response, in the same ref. I would like to know that how I can check the default pagesize & block size of my system.

Thanks
Rajan

To get the pagesize, simply run the "pagesize" command.
As for the block size, it is 512 bytes by Unix convention.

Hi,
While calulating I found some descrepancy in case of converting Free Memory

freemem*pagesize=free memory

71058 * 8192 = 582107136/(1024*1024) = 555.14 MB

In our case it approx 1110 MB.

Please correct me if I am wrong.

Thanks
Rajan

What says "vmstat 1 2" free column ?

Please find herewith vmstat 1 2 o/p, also I have captured top & sar -r o/p for co-relation process.

top

load averages: 0.52, 0.53, 0.56 10:18:46
63 processes: 60 sleeping, 1 stopped, 2 on cpu
CPU states: 98.5% idle, 0.0% user, 1.5% kernel, 0.0% iowait, 0.0% swap
Memory: 4096M real, 951M free, 2901M swap in use, 1790M swap free

sar -r

00:00:01 freemem freeswap

10:00:01 143563 3873947
10:10:00 136551 3805651


vmstat 1 2

kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr m0 m1 m2 m3 in sy cs us sy id
0 0 0 2080408 1076848 43 256 15 3 4 0 6 2 2 2 0 559 3447 933 15 4 80
0 0 0 1828696 966008 7 25 16 0 0 0 0 4 2 2 0 550 28753 775 27 8 65


Thanks
Rajan

It might be a sar bug. Try installing patch 138318-02.
http://sunsolve.sun.com/search/docum...ssetkey=138318

Hi

It seems that there was bug in sar only. As I have tried the same in Solaris 10 5/08 s10s_u5wos_10 SPARC, it is working fine as per given formula.

top

bv-a00-00.app.prd.sec.audible.com root: top
last pid: 17175; load avg: 0.73, 0.62, 0.52; up 112+11:48:46 03:19:35
85 processes: 84 sleeping, 1 on cpu
CPU states: 95.3% idle, 4.0% user, 0.7% kernel, 0.0% iowait, 0.0% swap
Memory: 16G phys mem, 8925M free mem, 8193M total swap, 8193M free swap


sar -r 1 2

03:19:20 freemem freeswap
03:19:21 1142547 31821936



I have verified the same it gives correct value.

1142547*8192/(1024*1024)=8926 MB

Which is correct.

Thanks
Rajan

ravi
 

yes don't do X2 :-)