Interesting question. My understanding is that this a feature of the adapters. Therefore I ass-u-me that the data actually flows from the host to the adapter back to the host.
If that is true, then one could SWAG the speed as something close to theoretical gigabit. However, you would still be constrained by IP and Ethernet protocols, where a large percentage of the data flowing is going to be TCP/IP headers and trailers along with gigabit (fast Ethernet) headers and trailers. A small MTU would set an upper limit on throughput the same way small block sizes constrain other data paths. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of McKown, John Sent: Monday, November 19, 2007 2:51 PM To: [email protected] Subject: Hipersocket speed? What is the nominal speed of a hipersocket connection. This would be between two z/OS 1.8 images running on a z9BC-T02 (or maybe U02 if we upgrade). I.e. it is nnn GiB/sec? From what I vaguely understand, this is a PR/SM moderated memory-to-memory type move between the LPARs. Not as fast as intra-z/OS memory moves, but perhaps similar to a address space to address space move? Or am I remembering something that was never said? -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
