This is to follow up on this thread with some results. After I had changed all my non-shared user catalogs to SHAREOPTIONS(3,3) I was expected so see more relief in ENQ/DEQ overhead but I wasn't getting the results. My catalog performance stats looked like this:
-----CATALOG EVENT---- --COUNT-- ---AVERAGE--- Entries to Catalog 2,347K 36.096 MSEC BCS ENQ Shr Sys 4,024K 6.941 MSEC BCS ENQ Excl Sys 76,131 6.868 MSEC BCS DEQ 6,080K 6.638 MSEC I changed my GRSRNL definition so that the SYSIGGV2 for the non-shared usercatalogs were EXCLuded. These catalogs are on packs that are only online to one system so I felt comfortable with making this change. My catalog performance stats after one day are exactly as I had hoped: -----CATALOG EVENT---- --COUNT-- ---AVERAGE--- Entries to Catalog 107,531 9.064 MSEC BCS ENQ Shr 158,160 0.069 MSEC BCS ENQ Shr Sys 17,210 6.434 MSEC BCS ENQ Excl 5,221 0.067 MSEC BCS ENQ Excl Sys 110 0.317 MSEC BCS DEQ 251,153 0.837 MSEC On a side note, Mark had suggested converting the catalogs from ISC to VLF. I've done that and the hit ratio has been 95% on most catalogs as opposed to 40-60% before with ISC. Thanks Mark, and thanks to everyone who replied. Tom On Wed, 21 Jun 2006 10:23:47 -0700, Mark Thomen <[EMAIL PROTECTED]> wrote: >""Tom Rusnak"" <[EMAIL PROTECTED]> wrote in message >news:<[EMAIL PROTECTED]>... >> Hi Mark, >> > >> My user catalogs in the GRS-plex are all on volumes that are only online >to >> one system. Therefore I'd be comfortable with adding the following to >the >> RNL Exclusion list: >> >> RNLDEF RNL(EXCL) TYPE(PATTERN) QNAME(SYSIGGV2)RNAME(CATALOG.???CAT*) > >Realize that if that volume comes online on another system and someone >submits a job to update that catalog, it will BREAK. You need to >understand that... > >Thanks, >Mark Thomen >Catalog/IDCAMS/VSAM Development > >---------------------------------------------------------------------- >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 >========================================================================= ---------------------------------------------------------------------- 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
