No zIIP's. So what kind of a number are we talking? -------------- Original message -------------- From: Russell Witt <[EMAIL PROTECTED]>
> Tom, > > Quite a bit has been done with CA-Vtape since 2005 to help reduce CPU > utilization. In particular CA-Vtape will exploit a zIIP (if available of > course). And yes, if a zIIP is not available then compression will be done > using main CPU cycles; so then you have to balance the need for a compressed > CACHE versus CPU cycles. If you have a z9 with a zIIP; then you have many > more options (what percentage should be done on teh zIIP versus main CPU > cycles). > > Rusell Witt > CA L2 Support Manager > > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] > Behalf Of Tom Eden > Sent: Monday, March 31, 2008 8:11 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: CA VTAPE > > > Does anyone have comments about CA VTAPE? I did some archive searches > and got some hits from 2005. I was wondering if there are any more recent > experiences. I am probably most curious about CPU consumption. One of the > 2005 post talked about a 15% hit on a Z890. There was a response to turn > off compression for the DASD Cache. The original poster thought that they > already had done so, but I did not see a follow-up post that said whether > that > was true or not. > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
