Re: page_in values in vmstat output

mkbobba_at_yahoo.com (Bob) wrote in message news:<64713ce9.0302090949.7c3689be_at_posting.google.com>...
> We are facing general dissatisfaction among the users about the system
> response time and overall performance of the application.
>
> When we ran the vmstat command on the Sun Solaris Server, we observed
> non-zero values in the page_in column of the output, and we suspect
> that this is one of the reasons for the poor performance.
>
> Availability of RAM.
>
> $ prtconf|grep Memory
> Memory size: 7168 Megabytes
>

...
>
> We are not able to understand why the server is paging when around 80%
> of the RAM is not reserved for any other application.
>
> Our server is heavily IO bound and IO is not distributed equally among
> the 16 disks available in this server. Does this fact has any remote
> connection with our above problem.
>
> Is this a common phenomenon or am I missing some thing here?.

Is it possible users are making connections and disconnecting them too frequently? What's the value for "logons cumulative" in v$system_event over time? Do process IDs near the top in `top` output constantly change?

Are other numbers in vmstat OK, pageout and scan rate particularly, to a less extent also the value under de?

Yong Huang Received on Sun Feb 09 2003 - 18:15:48 CST