z9 ECs here and a z10, but I'm not counting him yet... In prod - we have 45 or so guests on 18 IFLs In test - we have had 100 or so guests on 2 IFLs. So, the ratio is either 50:1 or 5:2 :) You can see why everyone says "it depends". If you can get the testers to play well together (wiki page coordination is what we do), I think one could have a ratio to work with in test. Prod is going to require measurement and planning :) Memory is usually a bigger issue than CPU. At least with CPU you can prioritize things so not all feel it. If you are heavily paging, everyone feels it. (i.e 100 on 24G = pain, 100 on 48G = happiness) (PS. We started with 2 :)
Marcy Cortes "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." ________________________________ From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On Behalf Of Harris, Nick J. Sent: Wednesday, March 19, 2008 12:20 PM To: IBMVM@LISTSERV.UARK.EDU Subject: [IBMVM] Number of IFLs to zLinux guests Hello All, Is there a golden rule about the number of IFLs to support production Linux guests? I understand all shops are different and 'it depends' applies...but we are curious as to the ratio of IFLs to Linux guest in other shops. Are there any shops out there running zLinux guests in production under z/VM with two or less IFLs besides us? We have four production Linux guests and twenty one test Linux guests supported by two IFLs on a z9BC. TIA Thanks, Nick Harris Lead Systems Programmer Texas Farm Bureau Mutual Insurance Company 7420 Fish Pond Rd. Waco, TX 76710 254.751.2259 [EMAIL PROTECTED]
