On Fri, 19 Feb 2016 14:25:54 +0000, Walter Marguccio wrote: >this is what my co-workers tell me, that the performance of the file transfer >varies wildy.. They assumethis depends on how much the LPAR is busy, in >terms of CPU.
I would be very surprised if CPU utilization, or even time time spent waiting for CPU is a significant part of the file transfer delays that you see. There is no CPU activity at all when the data is being transferred. That is all channel activity. If you perform a 1 GB file transfer, how long does it take? How much CPU time is used for the FTP? On a PC, every byte transferred has to go through the processor. That is not the case for any z/Architecture machine. The I/O bandwidth of your mainframe is far higher than that of your network. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
