confusing swap issue

[nyck]

I have a v880 which has got 32GB of physical memory and 2 swap partitions which are 10GB & 8GB in size!

when i run top i get the following output:-

Memory: 32G Real, 7743M free, 27G swap in use, 1416M swap free

when i run swap -l i get the following output:-

swapfile dev swaplo blocks free
/dev/md/dsk/d12 85,12 16 16393520 16391488
/dev/dsk/c1t2d0s1 118,17 16 20972720 20970640

when i run swap -s i get the following:-

total: 20333512k bytes allocated + 8249304k reserved = 28582816k used, 1451816k available

These do not seem to tie up, can someone explain this to me as its causing grief?

 

[Annihilannic]

It's confusing terminology. In Solaris "swap" and "swap space" (i.e. the bits on disk listed in swap -l) are different things. "swap" is the available virtual memory, the "27G swap in use" is the same figure as swapon -s reports as "28582816k used".

I know that's not the full story, but...

Annihilannic.

 

[Annihilannic]

This useful article might help, particularly intersting is the section "Swap Space: vmstat swap, sar -r freeswap, and swap -s".

http://www.itworld.com/Comp/2378/swol-0496-perf/

Annihilannic.