Gerald, Good stuff - has IBM published any studies or can you provide?
Richard (Gaz) Gasiorowski Global System z Linux Virutalization and Mainframce Services Product Manager Americas RPE Portfolio Platform Services CSC 3170 Fairview Park Dr., Falls Church, VA 22042 845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com This is a PRIVATE message. If you are not the intended recipient, please delete without copying and kindly advise us by e-mail of the mistake in delivery. NOTE: Regardless of content, this e-mail shall not operate to bind CSC to any order or other contract unless pursuant to explicit written agreement or government initiative expressly permitting the use of e-mail for such purpose. From: Gerald Schaefer <geral...@de.ibm.com> To: LINUX-390@VM.MARIST.EDU Date: 11/17/2009 08:36 AM Subject: Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2 Hi, you should see a large benefit in page table memory consumption with applications that use lots of processes on shared (hugepage) memory mappings. IIRC, Oracle should also benefit from this. You will save 2 MB of page table memory per 1 GB of shared memory mapping, per process. This will scale with the size of the memory mapping and the number of processes, up to the point that you can save more memory used for page tables than you were actually sharing between the processes. For example, with 1000 processes sharing 1 GB of (hugepage) memory, you will save 2 GB of memory that would otherwise be used for page tables w/o hugepages. Mit freundlichem Gruß / Kind regards, Gerald Schäfer Linux on System z Development IBM Systems &Technology Group, Systems Software Development / SW Linux für zSeries Entwicklung ----------------------------------------------------------------------------------------------- IBM Deutschland Schoenaicher Str. 220 71032 Boeblingen Phone: +49-7031-16-2275 Fax: +49-7031-16-3456 E-Mail: geral...@de.ibm.com ----------------------------------------------------------------------------------------------- IBM Deutschland Research & Development GmbH / Vorsitzender des Aufsichtsrats: Martin Jetter Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294 Linux on 390 Port <LINUX-390@VM.MARIST.EDU> wrote on 11/16/2009 06:20:51 PM: > From: > > Richard Gasiorowski <rgasi...@csc.com> > > To: > > LINUX-390@VM.MARIST.EDU > > Date: > > 11/16/2009 06:21 PM > > Subject: > > Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2 > > Jakub, > > I do not see the benefit of hugepages and system z linux. My answer is > simply does not apply. > > Richard (Gaz) Gasiorowski > Global System z Linux Virutalization and Mainframce Services Product > Manager > Americas RPE Portfolio Platform Services > CSC > 3170 Fairview Park Dr., Falls Church, VA 22042 > 845-889-8533|Work|845-392-7889 Cell|rgasi...@csc.com|www.csc.com > > > > > This is a PRIVATE message. If you are not the intended recipient, please > delete without copying and kindly advise us by e-mail of the mistake in > delivery. > NOTE: Regardless of content, this e-mail shall not operate to bind CSC to > any order or other contract unless pursuant to explicit written agreement > or government initiative expressly permitting the use of e-mail for such > purpose. > > > > From: > Joe Comitini <joseph.comit...@tdameritrade.com> > To: > LINUX-390@VM.MARIST.EDU > Date: > 11/16/2009 11:15 AM > Subject: > Re: Hugepages+oracle 10.0.2.0.4 in sles10SP2 > > > > We're looking into it but I think the official word is that it's not > supported by Oracle ... Please check with your Oracle rep > > Joe > > -----Original Message----- > From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of > Szefler Jakub > Sent: Friday, November 06, 2009 6:08 AM > To: LINUX-390@VM.MARIST.EDU > Subject: Hugepages+oracle 10.0.2.0.4 in sles10SP2 > > Hi, > Did someone configure oracle and hugepages under SLES10SP2 and it works ? > > > Jakub Szefler > Administrator Mainframe > > Pion Operacji IT Grupy TP/Departament Infrastruktury Wydział > Infrastruktury Informatycznej Dział Platform Serwerowych i Pamięci > Masowych > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, send > email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
