High wait time on all task types except for Dialog

[jason_wu7]

Hi Experts,

This issue happened on our CRM system last week. Our users complained that the performance on CRM WebUI was quite slow.

In ST03N, all the other response time were ok except for the Wait time. It was extremely high for HTTP, RFC, RPCTH. But for dialog steps, it was fine.

Below is one example:

Task Type Name Average Wait Time per Dialog Step (ms)

AUTOABAP 2,522.4

AUTOJAVA 1,889.9

AUTOTH 3,441.8

BACKGROUND 1,114.3

BUFFER SYNC 2,102.9

DDLOG CLEANUP 1,925.0

DEL. THCALL 1,210.1

DIALOG 0.8

HTTP 3,202.8

OTHER 2.8

RFC 55,690.7

RPCTH 118,442.9

SPOOL 24.2

Please help if you have any idea of where could be the problem was.

Thanks,

Jason

[Former Member · Accepted solution]

Hi,

It seems that you don't have enough dialog processes. Check also if you have enough threads for the ICM.

CRM users do use both ressources and if there is a bootleneck, you get bad performance.

Regards,

Olivier

[jason_wu7 · Accepted solution]

Hi,

Thank you!

We've found the cause of this issue. It was caused by mass idocs from ECC system. Someone initiated 60,000 idocs from ECC to CRM system within 5 queues. Looks like it occupied all the work processes.

The question was why only 5 queues can occupy so many work processes. We have nearly 60 dialog work processes in the system.

Thanks,

Jason

[Former Member · Accepted solution]

Hello Jason Wu,

when lot of IDOCS process it uses RFC connection only.

So when at the same time it uses 5 queues,then these RFC program is loaded with lot of data.

So it is quite ovious that at that perticular time -wait time of HTTP,RFC (All the Network related process) comes into WAIT

state.

And as you mentioned about the dialog process is more in your system ......you can find that dialog wait time is less only.

Could you please let me know about the performance of your system now..........How it is now ??

[mercedes_fernandez]

hello Jason,

the wait time is the time the request wait in the dispatcher queue to be assigned to a work process.

It indicates that all the work process were occupied at that time.

SAP Note 1063061 describes the different parts of the response time.

kind regards,

Mercedes