Thanks for the response The average number of records in the file could be 240,000 each record could be close to 10,000 bytes there are 4,644 files
Trying to find certain type of data ( doing testing for new filing season IRS) Thanks > On Oct 7, 2020, at 7:32 AM, Robert Prins <[email protected]> wrote: > > On 2020-10-07 11:00, Jeremy Nicoll wrote: >>> On Wed, 7 Oct 2020, at 04:03, Wayne Bickerdike wrote: >>> On a different note. I just compared EDIT macro performance versus >>> IPOUPDTE. IPOUPDTE was about 600 times faster. >> Is that a macro written in Assembler, or REXX? > > It's an IBM program, a "reconstituted" version can be found @ > <http://www.jaymoseley.com/hercules/cbt_ware/pdsupdte.htm>. From that page: > > "PDSUPDTE is a reconstituted version of the IPOUPDTE program (also > distributed as CPPUPDTE). It provides the ability to apply a group of > search/replace type modifications to JCL or control cards contained in all > members of one to several libraries (Partitioned Datasets). It can also be > useful for searching for and changing fields in source code statements. > > PDSUPDTE is located in File #65 of the CBT Overflow tape and is part of a > collection submitted by the Los Angeles User Group." > >> How much of what the macro was doing was "glue logic" (if it was >> in REXX) or scanning through the file line by line, compared with >> calling editor commands (which one would expect to be fairly >> efficient)? > > If you need to change one member, it's OK. Run it in batch on a PDS with a > few hundred members, and it burns CPU like there is no tomorrow. > > Robert > -- > Robert AH Prins > robert.ah.prins(a)gmail.com > The hitchhiking grandfather @ https://prino.neocities.org/indez.html > Some useful(?) REXX @ https://prino.neocities.org/zOS/zOS-Tools.html > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
