January 2006
Intermediate to advanced
226 pages
6h 11m
English
book
Linux for IBM System z9 and IBM zSeries
by Gregory Geiselhart, Robert Brenneman, Eli Dow, Klaus Egeler, Torsten Gutenberger, Bruce Hayden, Livio Sousa
Content preview from Linux for IBM System z9 and IBM zSeries
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Chapter 4. Networking Overview 83
4.3 HiperSockets
HiperSockets provides very fast TCP/IP communications between servers
running in different logical partitions (LPARs) on a zSeries machine. The z890
and z990 processors support up to 16 HiperSocket internal LANs. The z800 and
z900 processors support up to four HiperSockets. Each HiperSocket is defined
as a CHPID of type IQD.
To communicate between servers running in the same zSeries Central
Electronics Complex (CEC), HiperSockets sets up I/O queues in the zSeries
processor’s memory. The packets are then transferred at memory speeds
between the servers, thereby totally eliminating the I/O subsystem overhead and
any external network latency.
HiperSockets implementation is based on the OSA-Express ...
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