Now Sms 2008 slower then Now Sms 2007

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SMS & MMS Technical Forum » NowSMS Support - SMS Issues (Product Support Only) » Archive through January 22, 2009 » Now Sms 2008 slower then Now Sms 2007 « Previous || Next »
Author Message
Volodymyr Mandrychenko
Posted on Wednesday, November 05, 2008 - 08:58 pm:   

Hello,

We used Now Sms 2007 that was licensed for 5 messages per second without any problems with regards to our SMS traffic.

We have upgraded to Now Sms 2008 and it looks like the queues start building up during the highest traffic volume of about 2 - 3 messages a second that is causing delivery delays.

I was told that Now Sms 2007 was only throttling MT traffic to 5 messages per second. It seems to me that all MT, MO and Delivery Receipt traffic is throttled to 5 messages a second combined in Now Sms 2008 version.

Please confirm. Queue started building up after the upgrade. Traffic did not increase.

We have installed Now Sms 2008 version from CD that we received from Now Sms which included new license as well.
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 211
Registered: 08-2008
Posted on Wednesday, November 05, 2008 - 11:45 pm:   

Hi,

Inbound (MO) and outbound (MT) messages are definitely throttled independently.

Do you have async SMPP enabled on the "Advanced Settings" for the SMPP connection in NowSMS?

If the SMSC is particularly slow at sending ack responses, you might get stuck at 2 to 3 messages per second without this setting enabled.

I usually don't recommend a window size higher than your double your mps, max 50.

If that's not it, I can't imagine what else is going on.

For clarity, I assume that you are referring to the outbound message queue, right?

How many outbound SMSC connections are defined?

--
Des
NowSMS Support
Volodymyr Mandrychenko
New member
Username: Vmandrychenko

Post Number: 4
Registered: 09-2007
Posted on Thursday, November 06, 2008 - 06:11 pm:   

Yes, I was referring to the outbound queue.

2 SMSC Connections defined.

We are not running in async mode, I will try to switch to async and hopefully that will solve the problem.
Des - NowSMS Support
Board Administrator
Username: Desosms

Post Number: 217
Registered: 08-2008
Posted on Thursday, November 06, 2008 - 10:17 pm:   

More information.

I now have a complete picture of what is causing your performance problem.

The performance problem is actually related to the delivery receipt problem that is being discussed in another thread:

http://support.nowsms.com/discus/messages/1/24490.html

I believe that enabling SMPP async mode will fix the performance problem.

I also believe that the performance problem is unrelated to your upgrading from NowSMS 2007 to NowSMS 2008.

The performance problem is being triggered by the invalid message ids in the delivery receipts that are being returned by your SMS service provider.

If SMPP async mode is NOT enabled, and a delivery receipt is received with an invalid message id, NowSMS will spend some extra effort trying to match up this message id. This extra effort will slow down the throughput of the connection.

If SMPP async mode is enabled, this extra effort is performed in a separate thread of execution, so it does not slow down the throughput of the connection.

So the performance problem is actually being triggered by the invalid message ids in the delivery receipts.

But async mode will get your performance back (and we generally recommend async mode for most SMPP configurations anyway, as it performs much better).

--
Des
NowSMS Support

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