Re: Breaking up one partition into two.

I thought Rob was asking about partitions, not ASPs. That said, putting that many Domino servers in their own partition would allow you to better isolate the I/O and memory usage of Domino. You could achieve the same thing by using /Independent/ ASPs and memory pools that are separated.

My biggest concern with the screen print below is that it is too short of an observation to be sure what's going on. Rob, can you post one that has about 6 - 8 minutes on it? Also use the advanced view so the transitions are visible as well. I always push Domino/HTTP/WAS etc into their own pool because the paging characteristics are different from traditional workloads. In a system this large, and with a customer that has a knowledgeable system admin, I turn/off/ performance tuning and do it manually. I find it provides a more balanced system.

If the system is performing accecptably with the mixed workload, and application management is not a concern, I would not put up a second LPAR just for Domino. All that does is give yet another instance of IBM i to patch and manage with very little real return for the effort.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 7/22/2011 11:48 AM, Chris Bipes wrote:

The only reasons to create a separate ASP are:

1. to completely isolate disk workloads. Perhaps you have to store large objects in the IFS that are accessed infrequently. You can create an ASP with the 280GB or larger drives, while maintaining the system ASP for your regular storage needs.

2. Create a separate ASP for journal receivers so it the main ASP has multiple disk failures and you have to recover from tape, you have your journal receivers isolated and can apply the changes since the backup.

Last thing you want is to have too few arms in your system asp.



-- Chris Bipes Director of Information Services CrossCheck, Inc. 707.586.0551, ext. 1102 707.585.5700 FAX chris.bipes@xxxxxxxxxxxxxxx www.cross-check.com -----Original Message----- From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx Sent: Friday, July 22, 2011 7:59 AM To: domino400@xxxxxxxxxxxx; midrange-l@xxxxxxxxxxxx Subject: Breaking up one partition into two. Does it make sense to break up one partition running eight Domino partitions and all of our ERP and other "traditional" workload into two partitions? We thought of having the ERP partition host the Domino partition and make it a guested one. Normally, on a straight Domino partition we do things a little differently. Like, QCTLSBSD stays QBASE instead of QCTL as there's no batch or interactive workload - in the 'traditional' sense. Current lpar: 9117-MMA with 5.25 processor units, 51GB main memory, 52 disk drives of which four are SSD's and the rest 140's. WRKDSKSTS shows them about 4% busy and 67.7% full. % CPU used . . . . . . . : 43.2 Auxiliary storage: Elapsed time . . . . . . : 00:00:01 System ASP . . . . . . : 6348 G Jobs in system . . . . . : 43596 % system ASP used . . : 67.7759 % perm addresses . . . . : .660 Total . . . . . . . . : 6348 G % temp addresses . . . . : 33.788 Current unprotect used : 91041 M Maximum unprotect . . : 97924 M System Pool Reserved Max -----DB----- ---Non-DB--- Pool Size (M) Size (M) Active Fault Pages Fault Pages 1 9644.92 4663.57 +++++ .0 .0 6.3 6.3 2 13060.87 82.01 1599 .0 1.8 385.4 1400 3 522.23 .30 29 .0 .0 .0 .0 4 18711.30 .92 1306 1.8 1.8 4.5 4.5 5 10284.65 .02 157 .0 .0 188.1 195.4 System value . . . . . : QPFRADJ Performance adjustment . . . : 2 2=Adjustment at IPL and automatic adjustment Rob Berendt -- Group Dekko Dept 1600 Mail to: 2505 Dekko Drive Garrett, IN 46738 Ship to: Dock 108 6928N 400E Kendallville, IN 46755 http://www.dekko.com