12 dialog wp is enough for 130 users?

[Former Member]

Before RAM Upgrade we have 6 dialog, 4 spool,3 background, 2 update, 1 enqueue for the 130 to 140 users.

After RAM Upgrade we have 12 dialog ,4 spool,4 background, 2 update, 1 enqueue work process .

Is it sufficient to handle 130 to 140 users?

Thank u

Rangarao.

[sivakumar_kilari3]

Hi,

Don't increase more work process, It will occupy more memory.

You can find in SM50 tcode. How much time consuming each work process. depends on that you have to increase.

At peak time you can find how many work pressing is running and waiting status.

SM50---> Click CPU( time) icon. This will show CPU TIME each work process.

Thanks

Siva

[Former Member]

Hello,

one dialog WP can handle about 10 users working with SAP standard transactions. So maybe it would be good to give your system two wps more. You should monitor the situation in peak hours first and then decide what to do.

Another rough rule is that a normal OLTP system should have halve number of its wp as dialog wps.

So i think your new configuration is sufficient. If you need more batches during night hours you can use different operation modes.

Regards

Christian

[Former Member]

Hi,

you have not mentioned naything about your RAM capacity before & after upgrade.

For checking if DIA processes are bottleneck, please check the max waiting queue in SM51

Go to -> server name -> Information -> Queue Information

Check for DIA - Max Req. wait

Ideally this value should be ZERO.

Regards,

Rajneesh

[Former Member]

Hai Rajneesh,

Before Upgrade RAM is 8GB

After Upgrade RAM is 24GB

just now i check the server status DIALOG queue information as u said goto-servername -queue information

DIA--Max No of Requests Wait -

---

720

[Former Member]

720 is too high. Definately you need more work processes.

Is this a central system containing DB or its a application server.

In case of central system how much memory you have assigned to DB?

how much is the PHY_MEMSIZE?

[Former Member]

hai Rajneesh

PHYS_MEMSIZE parameter value is 512.

In Production Server Only HP Unix OS is installed. we have SAN system is there in that DB2 and Application Server is Installed.

thanks

Rangarao

[Former Member]

You have to increase the WPs for sure. How much .. depends on the load.

Increase by 5 & check the waiting DIA requests after few days.

Other way to check DIAs bottleneck is goto SM50 -> click on CPU icon. second icon after refresh,

look for DIA wps, CPU time ideally should be ZERO for few of them.

Also you should consider to increase the PHY_MEMSIZE as well, considering that you have increased the RAM by 3 times.

Regards,

Rajneesh

[Former Member]

Hai Rajneesh,

cputime is between 1min to 2min for 8 dia wp,and remaining 3 dia wp below 1 min.

Thanks

Rangarao