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 tests - ran 5 seconds each over a 2 minute period. 4 IUCV tests - ran 5, 7, 7, 6, 7 seconds over a 2 minute period. The IUCV tests seemed insensitive to transmission size. Whether we sent 8 bytes or 32,000, the 5 to 7 second window held. --. .- .-. -.-- Gary Dennis Mantissa Corporation On 4/20/09 12:53 AM, "Alan Altmark" <alan_altm...@us.ibm.com> wrote: > 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 > applications. The signalling GCS performs is primarily used to > - Signal the presence of data in shared memory (usually so that the target > of the signal can send it.) > - Run a named entry point in another group member (usually so target of > the signal can receive data placed in shared memory) > - Dump shared memory if a member of the group dies > - Join or remove a member of the group > > GCS has handled large workloads for decades without incident. > > Alan Altmark > z/VM Development > IBM Endicott >
