Re: Memory Management
Neil Truby schrieb: > "Ian Michael Gumby" <im_gumby@hotmail.com> wrote in message > news:mailman.491.1283968374.1071.informix-list@iiug.org... > Fernando, > >>> More memory means you can do more things and yes... 2000 concurrent >>> sessions could be considered small. ;-) > With more memory you can do things like in memory database tables for fast > response. > More memory can be used for advanced processing. (Extensibility that most > people don't think of.) >>> Additional things like web services on the same box... > > The memory imit used to be realated to the memory physically fitted to the > server. Now it relates to the total allocated to Informix only. So you > can > run "Growth" on a server with as much memory as you like, but must not > allocate more than 16g to all Informix instances. So plenty of room for > other apps. can you confirm this? My English suxxors badly and I understood IBM's text that for Growth running as a guest the memory total of the host system is also limited to 16 GB. Maybe I am wrong, but it IS explicitely mentioned as an restriction. So my host systems typicaly have 512 or 1024 GB of memory, if not the newest, as those have 1536 GB of memory. This is still necessary until all of my customers have done their tests and retesting (because the do not believe what they see for long time) and will know, that less memory and more SSDs is the way to go if you need real speed. Try get hold of a try out version of the latest and greatest ORACLE and configure it like in the early 1990-ies: Smallish SGA/PGA setup, no RAC. Then plug in 4 decent SSDs and see if you can top this setup using a best practise setup with largish buffer pool and no SSDs. Same goes for IDS 11.50! dic_k -- Richard Kofler SOLID STATE EDV Dienstleistungen GmbH Vienna/Austria/Europe
"Richard Kofler" <richard.kofler@chello.at> wrote in message news:27879$4c8a76b3$547019ee$28320@news.chello.at... > Neil Truby schrieb: >> "Ian Michael Gumby" <im_gumby@hotmail.com> wrote in message >> news:mailman.491.1283968374.1071.informix-list@iiug.org... >> Fernando, >> >>>> More memory means you can do more things and yes... 2000 concurrent >>>> sessions could be considered small. ;-) >> With more memory you can do things like in memory database tables for >> fast >> response. >> More memory can be used for advanced processing. (Extensibility that most >> people don't think of.) >>>> Additional things like web services on the same box... >> >> The memory imit used to be realated to the memory physically fitted to >> the >> server. Now it relates to the total allocated to Informix only. So you >> can >> run "Growth" on a server with as much memory as you like, but must not >> allocate more than 16g to all Informix instances. So plenty of room for >> other apps. > > can you confirm this? > My English suxxors badly and I understood IBM's text that for Growth > running > as a guest the memory total of the host system is also limited to 16 GB. That used to be the interpretation. Now the server may have as much memory as you wish, so long as no more than 16g is allocated between ALL Informix instances present.