I don't think 'top' has ever been included in Solaris distros.

I'm not surprised because Sun has always, with a certain degree of
accuracy, said that top could at times be up to 15% off certain
measurements.  Besides, when you run top, what's usually at the top of the
list... 'top'.

Sun's preferred method of getting system info is to use the kstat API..
which prstat uses.  It just asks the kernel about specific stats rather
than using standard system utilities to calculate certain perf stats.

When I took a system performance class from Sun one of the first things
they said was to take top and throw it away.

-=Eric

On Tue, 17 May 2005, thorsten Sideb0ard wrote:

>
> My Solaris 10 installations i have - two machines - none of them come with
> 'top'. Now i only downloaded the first two discs of the installation
> series, so i'm not sure if thats why, however, i was googling today to
> find out about it and came across a good article about prstat...
>
> http://developers.sun.com/solaris/articles/prstat.html
>
> and how prstat can be used to view all system activity, but even more
> detailed than top, such as drilling down into threads and processor
> groups.
>
> My question really is just one of interest, like if anyone knows some
> background on this, has top become deprecated?
>
> thanks,
> thor
>
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