On Tue, 21 May 2013 09:55:51 +0200, Bernd Oppolzer wrote: >Slightly drifting topic: > >We use fseek / ftell / fread to do the file I/O. The files are normal >sequential >OS files. > Sounds like the worst of both worlds. Have you tried it with normal z/OS UNIX files? The kernel may do the caching for you.
I've found that for large numbers of small files z/OS UNIX files vastly outperform legacy data sets. The allocate/open/close/free overhead is brutal. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
