On Wed, Feb 24, 2010 at 11:01:06PM -0800, Bruno Damour wrote:
> Hello,
> On osol-b133 noticed that the first call to vmstat always yields a 
> significantly different figure for freemem than the subsequent calls :
> 
>  # vmstat 2
>  kthr      memory            page            disk          faults      cpu
>  r b w   swap  free  re  mf pi po fr de sr cd s0 -- --   in   sy   cs us sy id
>  0 0 23 199424 60264  9  61  9 14 29  0 749 8 -1  0  0  679 1652 1387  2  1 97
>  0 0 48 192448 80700 96 121  0  0  0  0  0  0  0  0  0  537  933  446  2  1 98
>  0 0 48 192368 81176  0   0  0  0  0  0  0  0  0  0  0  476  894  415  1  0 99
>  0 0 48 192368 81176  0   0  0  0  0  0  0  0  0  0  0  478  943  430  0  1 99
> 
> Furthermore, if I let one "vmstat 2" instance running in a shell, and launch 
> a new one in another, the first call yields a different value than the one 
> reported by the running one.
> I cannot but think that the value on the first line must be unaccurate, which 
> would mean that the output of "vmstat" (without the time loop) is unaccurate. 
> 
> I do not see this behaviour in my linux vm guest (gentoo), which reports 
> consistents values even in the first call.
> 
> Is this behaviour expected ? Is it the same on other opensolaris builds, on 
> SXCE, on solaris 10 ?
> Is there any obvious explanation I'm missing ?

The first line displays summary of the virtual memory activity since the system 
was booted.
Ignore it.

Regards
Przemyslaw Bak (przemol)
--
http://przemol.blogspot.com/




























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