Re: *SIGNAL Service Experience

2009-04-27 Thread =?ISO-8859-1?Q?Romney_White?=
In experiments conducted some years ago, I determined that the most efficient way to signal between two guests was to use alternating IUCV QUIESCE and RESUME signals. These signals cause the target to receive an IUCV external interruption, which is sufficient to let it know that something has

Re: *SIGNAL Service Experience

2009-04-22 Thread Gary M. Dennis
Only A to B as we have no broadcast requirement. --. .- .-. -.-- Gary Dennis Mantissa Corporation On 4/21/09 4:08 PM, Alan Altmark alan_altm...@us.ibm.com wrote: On Tuesday, 04/21/2009 at 01:55 EDT, Gary M. Dennis gary.den...@mantissa.com wrote: The IUCV tests seemed insensitive to

Re: *SIGNAL Service Experience

2009-04-22 Thread David Boyes
On 4/22/09 10:38 AM, Gary M. Dennis gary.den...@mantissa.com wrote: Only A to B as we have no broadcast requirement. You will. Efficient implementation of multicast will need a similar transport capability.

Re: *SIGNAL Service Experience

2009-04-21 Thread Gary M. Dennis
Thanks. The following is from some tests we conducted to compare *SIGNAL to straight IUCV. 2097 Dallas Development, second level VM, under CMS. 100,000 signal / acknowledgement transmissions. The straight IUCV test sent only 8 bytes to try and put it on equal footing with *SIGNAL. 4 *SIGNAL

Re: *SIGNAL Service Experience

2009-04-21 Thread Alan Altmark
On Tuesday, 04/21/2009 at 01:55 EDT, Gary M. Dennis gary.den...@mantissa.com wrote: The IUCV tests seemed insensitive to transmission size. Whether we sent 8 bytes or 32,000, the 5 to 7 second window held. The savings of *SIGNAL would be the use of the broadcast function. Instead of UserA

Re: *SIGNAL Service Experience

2009-04-19 Thread Alan Altmark
On Friday, 04/17/2009 at 12:16 EDT, Gary M. Dennis gary.den...@mantissa.com wrote: IF you have experience using *SIGNAL service for high volumes To my knowledge, the only exploiter of *SIGNAL is GCS, which has been used since around 1986 to run VTAM, NetView, RSCS, AVS, PSF and VSCS

*SIGNAL Service Experience

2009-04-17 Thread Gary M. Dennis
IF you have experience using *SIGNAL service for high volumes THEN Could you provide information (or simply observation) relating to overhead, latency? ELSEIF You know compelling reasons this service should not be considered for very high signal volumes THEN This is an