On your 1st level system you may want to limit MDC's use of XSTORE so tha t more of XSTORE is available for 1st level paging.
Also, your 1st level system's steal rate of 92% is not good. You may wan t to evaluate the virtual memory sizes of your 2nd level guests to reduce demand for 1st level memory. You mention a 2nd level production system, but havn't provided any data from it. If it has a high page rate as you indicated perhaps it needs a larger virtual memory size (but see above) and/or some dedicated XSTORE. If the high page rate was only during your backups then maybe lowering th e virtual memory size of your backup machines may be in order. When you have sustained high paging rates use your performance monitoring tools to see which userids have large working set sizes and then re- evaluate their virtual memory requirements. Brian Nielsen On Tue, 12 Sep 2006 06:32:04 -0000, Dusha, Cecelia Ms. WHS/ITMD <[EMAIL PROTECTED]> wrote: >On all systems entered: CP SET MDCACHE STORAGE 0M 100M >q mdc >Minidisk cache ON for system >Storage MDC min=0M max=100M, usage=0%, bias=1.00 >Xstore MDC min=0M max=2048M, usage=0%, bias=1.00 >Ready; T=0.01/0.01 02:04:03 > >Presently I have a base VM:Backup running on 2nd level guests. > >First level VM: >ind >AVGPROC-091% 01 >XSTORE-001013/SEC MIGRATE-0041/SEC >MDC READS-000001/SEC WRITES-000001/SEC HIT RATIO-000% >STORAGE-056% PAGING-0075/SEC STEAL-092% >Q0-00001(00000) DORMANT-00028 >Q1-00001(00000) E1-00000(00000) >Q2-00000(00000) EXPAN-001 E2-00000(00000) >Q3-00002(00000) EXPAN-001 E3-00001(00000) > >PROC 0000-091% > >LIMITED-00000 >Ready; T=0.01/0.01 02:09:11 > >q alloc page > EXTENT EXTENT TOTAL PAGES HIGH % >VOLID RDEV START END PAGES IN USE PAGE USED >------ ---- ---------- ---------- ------ ------ ------ ---- >L51PAG 1004 1 3338 600840 239007 425234 39% >LPG002 102C 1 3337 600660 218143 342873 36% >LPG003 102D 1 3337 600660 194654 491228 32% > ------ ------ ---- >SUMMARY 1760K 651804 36% >USABLE 1760K 651804 36% >Ready; T=0.01/0.01 02:11:45 > >Guest 1 (development): >ind >AVGPROC-026% 01 >MDC READS-000073/SEC WRITES-000003/SEC HIT RATIO-049% >STORAGE-000% PAGING-0001/SEC STEAL-000% >Q0-00000(00000) DORMANT-00007 >Q1-00001(00000) E1-00000(00000) >Q2-00000(00000) EXPAN-001 E2-00000(00000) >Q3-00001(00000) EXPAN-001 E3-00000(00000) > >PROC 0000-026% > >LIMITED-00000 >Ready; T=0.01/0.01 02:12:30 > >q alloc page > EXTENT EXTENT TOTAL PAGES HIGH % >VOLID RDEV START END PAGES IN USE PAGE USED >------ ---- ---------- ---------- ------ ------ ------ ---- >PAG001 1003 1 1111 199980 0 0 0% >PAG002 1004 1 1111 199980 0 0 0% >PAG003 1005 1 1111 199980 0 0 0% > ------ ------ ---- >SUMMARY 599940 0 0% >USABLE 599940 0 0% >Ready; T=0.01/0.01 02:13:16 > >Guest 2 (test): >ind >AVGPROC-023% 01 >MDC READS-000068/SEC WRITES-000006/SEC HIT RATIO-062% >STORAGE-000% PAGING-0001/SEC STEAL-000% >Q0-00000(00000) DORMANT-00012 >Q1-00000(00000) E1-00000(00000) >Q2-00000(00000) EXPAN-001 E2-00000(00000) >Q3-00001(00000) EXPAN-001 E3-00000(00000) > >PROC 0000-023% > >LIMITED-00000 >Ready; T=0.01/0.01 02:14:25 > >q alloc page > EXTENT EXTENT TOTAL PAGES HIGH % >VOLID RDEV START END PAGES IN USE PAGE USED >------ ---- ---------- ---------- ------ ------ ------ ---- >PAG001 1008 1 1111 199980 0 0 0% >PAG002 1009 1 1111 199980 0 0 0% >PAG003 100A 1 1111 199980 0 0 0% > ------ ------ ---- >SUMMARY 599940 0 0% >USABLE 599940 0 0% >Ready; T=0.01/0.01 02:15:41 > >Normally, this is the pattern that occurs for the backups. The upper >level VM system has higher paging levels. Yesterday, the paging was >occurring on 2nd level production system. > >It will be interesting to see what the impact will be when the >production system runs a base VM:Backup backup again. > >I greatly appreciate everyone's responses. > >Thank you. > >Cecelia Dusha
