On 30 Oct 2007 09:18:04 -0700, in bit.listserv.ibm-main you wrote: >Howard, > >Yes, I agree, having the BLLSIZE=0 is the way to go now.
Of course IBM should provide a compile option to default to BLOCK = 0 in the FD statement for COBOL. This is permissible within the COBOL standard, both 1985 and 2002. We should not have to code it. > >However effective use of BUFNO on the DD can really increase >efficiencies when you add enough buffers to match devices transfer >sizes, without going overboard on it. > >I've done some tinkering over the past few years and it appears that >128K to 1M of buffering per file seems to cover most devices well. So >you don't always have to change that in the JCL, just find a good value >for BUFNO that applies well to most devices and use the BLKSIZE=0 to get >the max block size for the device. > >I will disagree with the statement that efficiencies should not be in >programs or in Jobs. Sometimes it's needed. > >Darren > >> rest snipped ---------------------------------------------------------------------- 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
