Maybe Q RESOURCES will reveal the userids of the NOMAD servers, then Q SPACES USER xxxx will show some dataspaces.
2008/5/17 O'Brien, Dennis L <Dennis.L.O'[EMAIL PROTECTED]>: > Kris, > Thanks. That's interesting reading. The system in question does not > have DB2/VM, and the 3 SFS filepools have no directories eligible for > dataspaces. Any other ideas? Do NOMAD2 Shared Databases use > dataspaces? I know this system has NOMAD2 Shared Databases, but as > we're just getting familiar with it, I don't know their userids. I > don't think there's anything wrong with the system, it's just curiosity, > so it's not worth any great effort. > > Dennis O'Brien > > "Elected office holds more perks than Elvis' nightstand." -- Dennis > Miller > > -----Original Message----- > From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On > Behalf Of Kris Buelens > Sent: Saturday, May 17, 2008 11:52 > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: [IBMVM] Mystery paging > > Are dataspaces being used? DB2 and SFS are the the most common > examples. With dataspaces (mapped to minidisks), the application > simply reference the storage, CP will page-in what is referenced, and > that is counted as paging. > > CP's Q SPACES and IND SPACE commands can help you. > > On VM's web-site, there is a document were I describe this in more > detail: > http://www.vm.ibm.com/perf/tips/dim.html > http://www.vm.ibm.com/perf/tips/vmdspage.html > > 2008/5/17 O'Brien, Dennis L <Dennis.L.O'[EMAIL PROTECTED]>: >> >> We recently inherited responsibility for a z/VM 5.2 system that had > been >> maintained by another group. They had a DR test today, and I logged > on >> and looked around. The LPAR is configured with 3G central storage and >> no expanded storage. I issued the following commands: >> >> q alloc page >> EXTENT EXTENT TOTAL PAGES HIGH % >> VOLID RDEV START END PAGES IN USE PAGE USED >> ------ ---- ---------- ---------- ------ ------ ------ ---- >> VMPG00 8719 1 1000 180000 1 1 1% >> VMPG01 871A 1 1000 180000 0 0 0% >> VMPG02 871B 1 1000 180000 0 0 0% >> VMPG03 871C 1 1000 180000 0 0 0% >> ------ ------ ---- >> SUMMARY 720000 1 1% >> USABLE 720000 1 1% >> Ready; >> ind >> AVGPROC-003% 01 >> MDC READS-000112/SEC WRITES-000003/SEC HIT RATIO-093% >> PAGING-13/SEC STEAL-000% >> Q0-00003(00000) DORMANT-00141 >> Q1-00000(00000) E1-00000(00000) >> Q2-00001(00000) EXPAN-001 E2-00000(00000) >> Q3-00000(00000) EXPAN-001 E3-00000(00000) >> >> PROC 0000-003% >> >> LIMITED-00000 >> Ready; >> q xstor >> Expanded storage is not available within this hardware configuration. >> Ready(01401); >> >> Since there's no expanded storage, where are those 13 pages/second >> going? Is the system reading the one page that's out on DASD 13 times > a >> second? I did another Q ALLOC PAGE after the IND, and there's still >> only one page out there. >> >> Dennis O'Brien >> >> "Elected office holds more perks than Elvis' nightstand." -- Dennis >> Miller > > > > -- > Kris Buelens, > IBM Belgium, VM customer support > -- Kris Buelens, IBM Belgium, VM customer support
