>I'm skeptical that layer(s) of emulation incur no performance penalty. >Wouldn't a hypothetical emulated device supporting two 32760-byte blocks per >track, or one 65535-byte block (the CCW count field) >do better?
What files would benefit? Other than sequential files, what files will benefit by a larger blocksize versus simply leaving things as they are and using more buffers? Bear in mind that such a change as you're proposing would also require that every file be redefined, copied, and all accompanying JCL changed for space/blocksize considerations. After all that work, what actual improvement would one expect to see? I don't see anything that warrants much excitement for the effort involved. Adam ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
