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MQSeries.net Forum Index » IBM MQ API Support » number of concurrent MQ Client connections

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anar
PostPosted: Tue Aug 10, 2010 4:21 am    Post subject: number of concurrent MQ Client connections Reply with quote

Apprentice

Joined: 28 Jun 2010
Posts: 31

Hi.

Whether there's a parameter controlling the number of concurrent client connections?
I got a following situation:
- ASP.NET WebService client puts messages to some queue_01.
- some other application (application_B) Gets from the queue_01 and processes the messages.

If I run simultaneously 10 ASP.NET clients to Put messages in the queue_01 only 2 messages at a time Put in the queue_01. Other 8 clients are still waiting till those 2 messages will be retrieved (Get) by the application_B.
- how to enable all clients' messages being Put in queue without waiting others' ?

NOTE: platform and product version info:
Server OS: HP-UX 11.31 v3
MQ Server: 7.0.1.2

Thanks in advance.

Best Regards,
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anar
PostPosted: Tue Aug 10, 2010 5:07 am    Post subject: Reply with quote

Apprentice

Joined: 28 Jun 2010
Posts: 31

additional info:
tried the below, with no changes in the Put behavior of the concurrent clients.
- MQPMO_ASYNC_RESPONSE on the client MQPutMessageOptions
- alter qlocal(Q.01) DEFPRESP(ASYNC)
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fjb_saper
PostPosted: Tue Aug 10, 2010 10:24 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

How about turning off conversation sharing on the channel?
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anar
PostPosted: Tue Aug 10, 2010 10:58 pm    Post subject: MQCNO_NO_CONV_SHARING & SHARECNV(1) Reply with quote

Apprentice

Joined: 28 Jun 2010
Posts: 31

Thanks for the clue.

tried the MQCNO_NO_CONV_SHARING in the client side and SHARECNV(1) on the chl definition. unfortunately no change in the behavior.

- anything that I could have missed?

the channel is:
Code:

dis chl(CHL.CLI.02)
     2 : dis chl(CHL.CLI.02)
AMQ8414: Display Channel details.
   CHANNEL(CHL.CLI.02)                     CHLTYPE(SVRCONN)
   ALTDATE(2010-08-11)                     ALTTIME(09.54.55)
   COMPHDR(NONE)                           COMPMSG(NONE)
   DESCR( )                                HBINT(300)
   KAINT(AUTO)                             MAXINST(999999999)
   MAXINSTC(999999999)                     MAXMSGL(4194304)
   MCAUSER(mqm)                            MONCHL(QMGR)
   RCVDATA( )                              RCVEXIT( )
   SCYDATA( )                              SCYEXIT( )
   SENDDATA( )                             SENDEXIT( )
   SHARECNV(1)                             SSLCAUTH(REQUIRED)
   SSLCIPH( )                              SSLPEER( )
   TRPTYPE(TCP)   
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anar
PostPosted: Wed Aug 11, 2010 1:22 am    Post subject: licensing Reply with quote

Apprentice

Joined: 28 Jun 2010
Posts: 31

- How could the licensing restrict number of concurrent Post's?
- Does this sound reasonable, providing I try with the "90 days free trial" edition?

Best Regards,
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fjb_saper
PostPosted: Wed Aug 11, 2010 9:40 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY

I hope your qmgr is not a mainframe without CAF attached...

There is a limit of 7 client connections to a MF without Client Attachment Facility...
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anar
PostPosted: Thu Aug 12, 2010 1:35 am    Post subject: connection logic change Reply with quote

Apprentice

Joined: 28 Jun 2010
Posts: 31

Actually the connection logic in the WebService side seems was the cause.
After modifying that now I could hit 24 concurrent Posts from the WebService in stress tests.
Will try further, but have no clues yet for "why 24" .
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