Bill I know that this is an apples to oranges comparison but we've found that 3 Sender channels between 2 full Qmanagers gets the best throughput.
If 1 channel =100% 2 channels =150% 3 channels =177% 4 channels =125% at this point MQ sends less data than 2 channels. This was 2 ZOS Qmanagers at 5.2 level with SCON connected TCPIP channels between to sites. 1500 byte messages with a batchsize of 50. This is still far far below the throught put you would get if you blocked the messages. Richard Jackson SIAC - CICS/MQ Systems Bill Anderson <[EMAIL PROTECTED] To: [EMAIL PROTECTED] TA.AERO> cc: (bcc: Richard Jackson/SIAC) Sent by: MQSeries Subject: MQ Channel Communication Overhead and Limited Bandwidth List <[EMAIL PROTECTED] n.ac.at> 09/08/2003 11:06 AM Please respond to MQSeries List I have a customer in Germany, who is displeased with the throughput he is getting with his client connection to my server in Atlanta. Please see the encrypt from an email I received from him below. Relating to our 32Bit-Frame-Relay-Connection between Germany and Atlanta, I've some more questions. 1. 240KB a minute is the theoretical limit of the bandwidth 2.1 with big messages (e.g. 2397 bytes) we reach following limits: 2.2 from Germany to Atlanta (MQPUT) 2.3 90 msgs per minute => 210 KB bandwidth 2.4 from Atlanta to Germany (MQGET) 2.5 82 msgs per minute => 191 KB bandwidth 3.1 with small messages (e.g. 288 bytes) we reach following limits: 3.2 from Germany to Atlanta (MQPUT) 3.3 160 msgs per minute => 45 KB bandwidth 3.4 from Atlanta to Germany (MQGET) 3.5 116 msgs per minute => 33 KB bandwidth Now, the customers assumption is that the problem is with the queue manager in Atlanta, I am not convinced he is correct. I know there is a communication over head for using an MQ channel. I believe it is just over 1500 K, but I can't find the exact number in the manuals. Does anyone happen to know what it is? The customer currently connects as a client, but they do run a full queue manager. I do believe building them a sender / receiver pair of channels might help some, but what they are asking is multiple channels. If bandwidth is the problem, more channel won't help much I'm sure. Any help would be appreciated Thanks Bill Anderson Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive ----------------------------------------- This message and its attachments may contain privileged and confidential information. If you are not the intended recipient(s), you are prohibited from printing, forwarding, saving or copying this email. If you have received this e-mail in error, please immediately notify the sender and delete this e-mail and its attachments from your computer. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive