I'm trying to find docs comparing the performance on a z9 of none vs software vs hardware support for encryption of Tn3270 connections. I've seen quite a bit of performance doc about functions that get offloaded to crypto coprocessors, but that is a trivial amount of work for long lasting connections like Tn3270. The steady-state encryption and hashing of SSL / TLS connections gets given to CPACF, and (as I understand it) that is synchronous processing - while the CP is doing CPACF stuff it is not doing "normal" processing. That tells me that encryption could make a significant impact on a heavily loaded processor - even with the encryption handled by CPACF.
I've seen doc showing how CPACF throughput is effected on a single CP based on the size of data blocks being processed, but no comparison with throughput when no encryption was being done, or when the encryption/hashing was done in software. Has anybody seen such a report? Thanks. Pat O'Keefe ---------------------------------------------------------------------- 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
