how to find a process which is a reason for increase in the paging space?

#1 (**permalink**) 01-05-2008, 12:10 PM

we have a server in whioch some 7 application servers r running.

yesterday we've rebooted the server. and it started with all
applications running with paging space 1%.
but suddenly after 10 hours paging space increased to 24% though there
is no users at that time..

can any one help me to find the reason for the sudden increase of
paging space..

and need to find out due to which process it happens?

#2 (**permalink**) 01-05-2008, 12:11 PM

You can try with topas -P command , it will show you usage of paging
space for every process.

vinayag
On Jan 29, 6:35 am, "kavin" <kavinilammur...@gmail.com> wrote:
> we have a server in whioch some 7 application servers r running.
>
> yesterday we've rebooted the server. and it started with all
> applications running with paging space 1%.
> but suddenly after 10 hours paging space increased to 24% though there
> is no users at that time..
>
> can any one help me to find the reason for the sudden increase of
> paging space..
>
> and need to find out due to which process it happens?

#3 (**permalink**) 01-05-2008, 12:11 PM

Before you go looking for memory leaks, you need the check your VMM
tuning is set up correctly. Paste some of the following output.

vmstat 1 10
vmstat -v
vmo -a | egrep "lru|max"
lsattr -EHl mem0

Rgds
Mark Taylor

On Jan 29, 12:07 pm, "vinayag" <ravina...@gmail.com> wrote:
> You can try with topas -P command , it will show you usage of paging
> space for every process.
>
> vinayag
> On Jan 29, 6:35 am, "kavin" <kavinilammur...@gmail.com> wrote:
>
> > we have a server in whioch some 7 application servers r running.
>
> > yesterday we've rebooted the server. and it started with all
> > applications running with paging space 1%.
> > but suddenly after 10 hours paging space increased to 24% though there
> > is no users at that time..
>
> > can any one help me to find the reason for the sudden increase of
> > paging space..
>
> > and need to find out due to which process it happens?

#4 (**permalink**) 01-05-2008, 12:11 PM

And oslevel -r ; oslevel -s

#5 (**permalink**) 01-05-2008, 12:11 PM

On 29 jan, 02:35, "kavin" <kavinilammur...@gmail.com> wrote:
> we have a server in whioch some 7 application servers r running.
>
> yesterday we've rebooted the server. and it started with all
> applications running with paging space 1%.
> but suddenly after 10 hours paging space increased to 24% though there
> is no users at that time..
>
> can any one help me to find the reason for the sudden increase of
> paging space..
>
> and need to find out due to which process it happens?

Use "svmon -P" and look "Pgsp".
This is the number of memory pages (4k) reserved or used by segments
that are used by the process in paging space.

#6 (**permalink**) 01-05-2008, 12:11 PM

On 29 jan, 02:35, "kavin" <kavinilammur...@gmail.com> wrote:
> we have a server in whioch some 7 application servers r running.
>
> yesterday we've rebooted the server. and it started with all
> applications running with paging space 1%.
> but suddenly after 10 hours paging space increased to 24% though there
> is no users at that time..
>
> can any one help me to find the reason for the sudden increase of
> paging space..
>
> and need to find out due to which process it happens?

Use "svmon -P" and look "Pgsp".
This is the number of memory pages (4k) reserved or used by segments
that are used by the process in paging space.

#7 (**permalink**) 01-05-2008, 12:11 PM

Try to use svmon:

svmon -Pt 5

will show you the 5 top memory consumers. Process by process. Look at
the Pgsp column and it will show how many memory pages (in 4KB units)
is using.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode