IBM Mainframe Discussion List <IBM-MAIN@BAMA.UA.EDU> wrote on 05/09/2007 02:24:41 PM:
> I am surprised there are/were no basic statistics kept on such an obviously > performance-related tool as BLSR. But then, I guess if SMB replaces BLSR > then no one would bother going back to retrofit measurement tools into it, > either, regardless of whether it was hard or easy to do so. > > If it had been me, basic stats would have been built-in from day 1 for > things like actual count of buffers ever used for data and index, total BLSR > CPU time used, and maybe even hit counts and total searches. None of these > would have been hard to do and would have provided useful information to > users. And a report option for WTO of EOJ stats would have been > nice-to-have as well. And none of it would have required GTF. BLSR has no opportunity to provide any function like this. All that BLSR does is intercept the VSM NSR OPEN of a SUBSYS DD, do a BLDVRP to build an LSR buffer pool, CLOSE the SUBSYS DD, and then OPEN the real VSAM dataset using the LSR buffer pool. By the time the application does its first I/O operation, BLSR is completely out of the picture, and the application which was coded to use VSAM NSR is instead using VSAM LSR. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- 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
