Stream: Virtual Room 5
Time: 17:00 - 18:00
Since its initial release in April 2020, JES3plus has been steadily enhanced to provide superior I/O performance characteristics.
IBM's existing ECKD (Enhanced Count-Key-Data) I/O was first improved to use ACKD (Advanced CKD) I/O and eventually full zHPF (IBM Z High Performance FICON) support was implemented and delivered to customers.
The speaker will provide some high-level background on the evolution of mainframe DASD I/O, from the early days of the bus & tag cables to what we use today. He will then take us through a detailed explanation of what was changed in JES3plus SPOOL I/O and why those changes perform better than the original ECKD I/O implementation.
Some performance results will be shared to put things into perspective.
There is currently no attachment for JES3plus I/O Improvements
Ed Jaffe began his software development career writing applications for government and research organizations in Washington, D.C. After moving to Los Angeles in 1982, he transitioned to the banking industry and eventually took a software development position with Phoenix Software International in 1987. He became Manager of Research & Development in the mid-1990s and was named Chief Technology Officer in 2009. Ed is co-Manager of the MVS Program at SHARE, an active participant in numerous mainframe-related social media sites and IBM's System z Partnerworld for Developers program, and is recognized throughout the mainframe community as a subject matter expert and strong advocate for the z Systems platform with an emphasis on z/OS.
Ed Jaffe began his software development career writing applications for government and research organizations in Washington, D.C. After moving to Los Angeles in 1982, he transitioned to the banking industry and eventually took a software development position with Phoenix Software International in 1987. He became Manager of Research & Development in the mid-1990s and was named Chief Technology Officer in 2009. Ed is co-Manager of the MVS Program at SHARE, an active participant in numerous mainframe-related social media sites and IBM's System z Partnerworld for Developers program, and is recognized throughout the mainframe community as a subject matter expert and strong advocate for the z Systems platform with an emphasis on z/OS.
Ed Jaffe began his software development career writing applications for government and research organizations in Washington, D.C. After moving to Los Angeles in 1982, he transitioned to the banking industry and eventually took a software development position with Phoenix Software International in 1987. He became Manager of Research & Development in the mid-1990s and was named Chief Technology Officer in 2009. Ed is co-Manager of the MVS Program at SHARE, an active participant in numerous mainframe-related social media sites and IBM's System z Partnerworld for Developers program, and is recognized throughout the mainframe community as a subject matter expert and strong advocate for the z Systems platform with an emphasis on z/OS.
Ed Jaffe began his software development career writing applications for government and research organizations in Washington, D.C. After moving to Los Angeles in 1982, he transitioned to the banking industry and eventually took a software development position with Phoenix Software International in 1987. He became Manager of Research & Development in the mid-1990s and was named Chief Technology Officer in 2009. Ed is co-Manager of the MVS Program at SHARE, an active participant in numerous mainframe-related social media sites and IBM's System z Partnerworld for Developers program, and is recognized throughout the mainframe community as a subject matter expert and strong advocate for the z Systems platform with an emphasis on z/OS.
Ed Jaffe began his software development career writing applications for government and research organizations in Washington, D.C. After moving to Los Angeles in 1982, he transitioned to the banking industry and eventually took a software development position with Phoenix Software International in 1987. He became Manager of Research & Development in the mid-1990s and was named Chief Technology Officer in 2009. Ed is co-Manager of the MVS Program at SHARE, an active participant in numerous mainframe-related social media sites and IBM's System z Partnerworld for Developers program, and is recognized throughout the mainframe community as a subject matter expert and strong advocate for the z Systems platform with an emphasis on z/OS.
Ed Jaffe began his software development career writing applications for government and research organizations in Washington, D.C. After moving to Los Angeles in 1982, he transitioned to the banking industry and eventually took a software development position with Phoenix Software International in 1987. He became Manager of Research & Development in the mid-1990s and was named Chief Technology Officer in 2009. Ed is co-Manager of the MVS Program at SHARE, an active participant in numerous mainframe-related social media sites and IBM's System z Partnerworld for Developers program, and is recognized throughout the mainframe community as a subject matter expert and strong advocate for the z Systems platform with an emphasis on z/OS.
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