On Mon, 14 Nov 2011, bill4carson wrote: > > > On 2011年11月14日 16:00, Easley wrote: > > > > I add "hugepagesz=1M hugepages=32" to grub.conf. > > The "hugepagesz=16M" doesn't take effect. > > The "hugepages=32" take effect. > > What type is hardware support that? > > > > Any help will be appreciated. > > > > --Easley > hugepagesz=16M only work for x86_64 platform, > check arch/x86/mm/hugetlbpage.c setup_hugepagesz > > guess your machine is an 32 bit x86.
I guess my replies aren't getting through... 16MB pages are only supported by POWERPC, with a 2MB default size I you are either running x86_64 or x86 with PAE. On the RHEL 5.4 kernel that is the only valid page size for that arch. Eric > > > > > ------------------ Original ------------------ > > *From: * "bill4carson"<bill4car...@gmail.com>; > > *Date: * Mon, Nov 14, 2011 09:47 AM > > *To: * "Easley"<ugi...@gmail.com>; > > *Cc: * "libhugetlbfs-devel"<libhugetlbfs-devel@lists.sourceforge.net>; > > *Subject: * Re: [Libhugetlbfs-devel] How to change the hugepagesize? > > > > > > On 2011年11月10日 17:27, Easley wrote: > > > > > > Thank you very much. > > > I still have a question. How can I know that have been take effect? > > > I take steps as follow: > > > ------------------ > > > mkdir /hugetlb > > > mount -t hugetlbfs hugetlbfs /hugetlb > > > HUGETLB_MORECORE=yes LD_PRELOAD=libhugetlbfs.so hugepagesz=16M > > > hugepages=32 ./myprogram > > > ------------------ > > > That's right? > > No > > > > hugepagesz=16M hugepages=32 is for kernel boot command line > > > > HUGETLB_MORECORE=yes LD_PRELOAD=libhugetlbfs.so will let malloc get huge > > page based memory. > > > > > > > > > Easley > > > ------------------ Original ------------------ > > > *From: * "bill4carson"<bill4car...@gmail.com>; > > > *Date: * Thu, Nov 10, 2011 11:24 AM > > > *To: * "Easley"<ugi...@gmail.com>; > > > *Cc: * "libhugetlbfs-devel"<libhugetlbfs-devel@lists.sourceforge.net>; > > > *Subject: * Re: [Libhugetlbfs-devel] How to change the hugepagesize? > > > > > > > > > On 2011年11月10日 10:41, Easley wrote: > > > > > > > > Hi, > > > > > > > > I run "grep Huge /proc/meminfo" in rhel5.4 . > > > > it shows: > > > > HugePages_Total: 0 > > > > HugePages_Free: 0 > > > > HugePages_Rsvd: 0 > > > > Hugepagesize: 2048 kB > > > > > > > > It says hugepagesize is 2M, how can I change the size to 16M? > > > > Any help will be appreciated. > > > > > > > > Easley > > > > > > You can *only* do this by adding "hugepagesz=16M hugepages=32" into > > > you command line > > > to preallocate 32 16M hugepages. > > > > > > Prerequisite is you hardware support 16M huge page. > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > RSA(R) Conference 2012 > > > > Save $700 by Nov 18 > > > > Register now > > > > http://p.sf.net/sfu/rsa-sfdev2dev1 > > > > > > > > > > > > _______________________________________________ > > > > Libhugetlbfs-devel mailing list > > > > Libhugetlbfs-devel@lists.sourceforge.net > > > > https://lists.sourceforge.net/lists/listinfo/libhugetlbfs-devel > > > > > > -- > > > I am a slow learner > > > but I will keep trying to fight for my dreams! > > > > > > --bill > > > > > > > -- > > I am a slow learner > > but I will keep trying to fight for my dreams! > > > > --bill > > > > -- > I am a slow learner > but I will keep trying to fight for my dreams! > > --bill > > > ------------------------------------------------------------------------------ > RSA(R) Conference 2012 > Save $700 by Nov 18 > Register now > http://p.sf.net/sfu/rsa-sfdev2dev1 > _______________________________________________ > Libhugetlbfs-devel mailing list > Libhugetlbfs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/libhugetlbfs-devel
signature.asc
Description: Digital signature
------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1
_______________________________________________ Libhugetlbfs-devel mailing list Libhugetlbfs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libhugetlbfs-devel
